hh.sePublications
Change search
Refine search result
3456 251 - 278 of 278
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 251.
    Stambulova, Natalia
    et al.
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Sport Health and Physical activity.
    Franck, Alina
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI).
    Weibull, Fredrik
    University of Birmingham, Birmingham, United Kingdom.
    Assessment of the transition from junior to senior sports in Swedish athletes2012In: International Journal of Sport and Exercise Psychology, ISSN 1612-197X, E-ISSN 1557-251X, Vol. 10, no 2, p. 79-95Article in journal (Refereed)
    Abstract [en]

    The objectives of this study were (1) to explore the Transition Monitoring Survey (TMS) for assessing athletes’ transition from junior to senior sports, (2) to describe the transition from junior to senior sports in Swedish athletes based on the TMS data, and (3) to explore how the transition variables contribute to the athletes’ perceived degree of adjustment to the senior level and to their sport and life satisfaction. The TMS was developed based on career development/transition frameworks (Stambulova, 1994, 2003; Wylleman & Lavallee, 2004) and previous qualitative research on the transition from junior to senior sports. Altogether 416 participants organized in three samples were involved in this exploratory study. The study illuminated the strong points of the TMS as a theoretically based and culturally adapted instrument, but it also shed a light on some deficits of the TMS that should be eliminated in its further use in transition research. © 2012 Copyright International Society of Sport Psychology.

  • 252.
    Stambulova, Natalia
    et al.
    St.-Petersburg State University of Physical Education and Sports, St.-Petersburg, Russia.
    Lukiyanov, Vladimir
    St.-Petersburg State University of Physical Education and Sports, St.-Petersburg, Russia.
    Post-sports career adaptation of Russian athletes2000In: Proceedings of the 5th Annual Congress of the European College of Sport Sciences / [ed] J. Avela, P. Komi, & J. Komilainen, ECSS , 2000, p. 701-Conference paper (Refereed)
  • 253.
    Stambulova, Natalia
    et al.
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Sport Health and Physical activity.
    Stambulov, Alexander
    Athletic club 'Alliance', Halmstad, Sweden.
    Johnson, Urban
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Sport Health and Physical activity.
    ‘Believe in Yourself, Channel Energy, and Play Your Trumps’: Olympic Preparation in Complex Coordination Sports2012In: Psychology of Sport And Exercise, ISSN 1469-0292, E-ISSN 1878-5476, Vol. 13, no 5, p. 679-686Article in journal (Refereed)
    Abstract [en]

    Objectives: This paper is aimed at (a) analysing the psychological context of complex coordination sports (CCSs) and specific contextual factors related to Olympic Games, (b) sharing the authors' experiences in Olympic preparation of athletes in diving, figure skating, and artistic and rhythmic gymnastics with an emphasis on typical working issues and strategies; and (c) summarizing the authors' reflections on the role of the national sport system and cultural contexts in Olympic preparation and major lessons learnt in working with Olympic athletes. Design and Method: Analysing and structuring the authors' professional experiences in working with Olympic athletes in CCSs based on the scientist-practitioner model. Results: Major results include (a) a summary of psychological context for Olympic athletes in CCSs; (b) the temporal structure of Olympic preparation; (c) four categories of Olympic athletes; (d) consultants' strategies, reflecting major psychological aspects of Olympic preparation in CCSs; and (e) lessons learnt in working with Olympic athletes in CCSs. Conclusion: The authors emphasize the large responsibility of sport psychology practitioners working with Olympic athletes in CCSs and share lessons learnt, with a focus on seven major sport psychology approaches validated in their practice. © 2012 Elsevier Ltd.

  • 254.
    Stambulova, Natalia
    et al.
    Halmstad University, School of Social and Health Sciences (HOS), Centre of Research on Welfare, Health and Sport (CVHI), Center for Sport and Health Science (CIHF).
    Stephan, Yannick
    Paris XI University, Paris, France.
    Athletic retirement of elite Swedish and French athletes2005In: Proceedings of the 11th World Congress of Sport Psychology, ISSP , 2005Conference paper (Refereed)
  • 255.
    Staveborg Kerkelä, Ellen
    et al.
    Department of Psychology, University of Gothenburg, Gothenburg, Sweden.
    Jonsson, Linus
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI).
    Lindwall, Magnus
    Department of Food and Nutrition, and Sport Science, University of Gothenburg. Department of Psychology, University of Gothenburg, Gothenburg, Sweden.
    Strand, Jennifer
    Department of Psychology, University of Gothenburg, Gothenburg, Sweden.
    Individual experiences following a 6-month exercise intervention: A qualitative study2015In: International Journal of Qualitative Studies on Health and Well-being, ISSN 1748-2623, E-ISSN 1748-2631, Vol. 10, article id 26376Article in journal (Refereed)
    Abstract [en]

    Purpose: Dropout is a common problem in various exercise interventions. The individual’s experience is believed to greatly impact dropout, yet little is known about the individual experiences of taking part in exercise interventions. The aim of this study was to examine individuals’ experiences following a self-determination theory based exercise intervention in order to gain understanding of how standardized interventions can be adjusted to fit individuals’ specific needs, capacities, and circumstances.

    Methods: A qualitative approach with semi-structured interviews was conducted with eight informants (three male and five female) aged between 26 and 47 years, whom all had participated in a 6-month exercise intervention with individual coaching based on self-determination theory and motivational interviewing. The interviews were analyzed thematically with an inductive approach.

    Results: Aspects that influenced the informants’ motivation and participation in the exercise intervention were linked to three themes: the frames of the intervention, measurable changes, and the individual’s context. The themes present information about the process and to what extent the informants felt that the intervention was adapted to fit their lives and needs.

    Conclusions: This study emphasizes the importance of individualizing exercise interventions to support individuals’ diverse capacities and psychological needs.

  • 256.
    Staveborg Kerkelä, Ellen
    et al.
    Halmstad University, School of Health and Welfare.
    Jonsson, Linus
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI).
    Lindwall, Magnus
    Department of Psychology, University of Gothenburg, Gothenburg, Sweden & Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden.
    Strand, Jennifer
    Department of Psychology, University of Gothenburg, Gothenburg, Sweden.
    Individual experiences following a six month exercise intervention: a qualitative study2015In: Edinburgh 2015: ISBNPA: International Society of Behavioral Nutrition and Physical Activity: Advancing Behavior Change Science: 3rd – 6th June 2015: Abstract Book, 2015, p. 399-399Conference paper (Refereed)
    Abstract [en]

    Purpose:

    Dropout is a common problem invarious exercise interventions. The individual ́s experience is believed to greatly impact dropout, yet little is known about the individual experiences of taking part in exercise interventions. The aim of this study was to gain understanding of participants’ personal experiences in relation to participating in an exercise intervention.

    Methods:

    A qualitative approach with semi-structured interviews was conducted with eight informants (malen= 3; femalen: 5) aged between 26 to 47 years, whom all had participated in a six month exercise intervention with individual coaching based on Self-Determination Theory and Motivational Interviewing. The interviews were analyzed thematically with an inductive approach.

    Results/findings:

    Aspects that influenced the informants’ participation, motivation and adherence to the exercise intervention could be linked to three themes: For the greater good, Self-awareness: knowing, and The individual’s context. In relation to the themes, it was discussed to what extent the informants felt that the intervention was adapted to fit their specific needs.

    Conclusions:

    This study highlights the importance of tailoring exercise interventions to better support the individuals’ specific needs.

  • 257.
    Stefanescu, Viktoria
    Halmstad University, School of Business, Engineering and Science.
    Effects of Back Squat Post Activation PotentiationProtocol on 30 Meter Sprint Performance: Amongst male Crossfit athletes2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Post activation potentiation (PAP) is an increased muscular performance thatoccurs after maximal voluntary contraction. Previous studies have shown a significantincrease in explosive movements, such as sprint and jump performance, as an effect ofthese maximal contractions.

    Aim: The aim of this study was to analyze if PAP, in terms of heavy squats, has aperformance enhancing effect on 30 meter sprint, with a hypothesis that the maximal effortin the squat has a performance enhancing effect on 30 meter sprint.

    Method: Twelve healthy male Crossfit athletes from Crossfit Halmstad, age between x-x,volunteered to participate in the study, eleven of these completed all of the test sessions in thiscross-sectional study. During the first test session, the subjects attempted to set a onerepetition max (1RM) in the back squat. During the second and third test session, the subjectswere randomly divided into two groups and the subjects got to perform both the non-PAP andthe PAP protocol during different sessions, depending on which group they were in. Thesprint time was measured with a handheld stopwatch. Wilcoxon Signed Rank Test was usedto determine significant differences between sprint time after the two different protocols, andthe level of significance was set at p < 0.05.

    Result: The result showed that there was no significant difference between PAP and non-PAPprotocols (p = 0,679). With a median value of 4,78 seconds, a minimum value of 4,59seconds and a maximum value of 5,54 seconds for the sprint trials after PAP and a medianvalue of 4,82 seconds, a minimum value of 4,59 seconds and a maximum value of 5,31seconds for the sprint trials without PAP, the results did not confirm the hypothesis.

    Conclusion: As an effect from the low number of participants, the result could be deceptive.The study could have show a different result if the number of participants would exceed atleast 25 subjects. There are no performance enhancing effects in the sprint after PAP, in thisstudy. Further research is required, to determine possible performance enhancing effectsfrom PAP.

  • 258.
    Storck, Natalie
    Halmstad University, School of Business, Engineering and Science.
    Upper body strength and endurance and its relationship with freestyle swim performance in elite swimmers2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Strength is considered an important part in swimming and is usually included in training programs for swimmers. However, studies assessing the relationship between muscle strength, muscle endurance and swim performance are not many and have showed different results.

    Aim: The aim of this study was to assess the correlation between bench press, pull-up and 400 meter freestyle swim performance in elite swimmers.

    Method: The subjects (n=15, age 16-20) performed a one repetition maximum (1RM) bench press test to measure maximal muscle strength and to measure muscle endurance the subjects performed as many pull-up repetitions as possible during 30 seconds. A velocity four (V4) speed test was performed to assess swim performance by measuring time over covered distance and blood lactate levels.

    Results: The results of this study showed a moderate correlation (r=-0.54) between one repetition maximum in bench press and 400 meter freestyle swim performance. It showed a strong correlation (r=-0.63) between number of pull-ups repetitions during 30 seconds and 400 meter freestyle swim performance.

    Conclusion: These results suggest that upper body strength contributes to swim performance over 400 meter. The stronger correlation between pull-ups and swimming may indicate that muscle endurance of m. latissimus dorsi and the back muscles may be important to incorporate in a training program since it has shown to have a strong correlation with swim performance at 400 meters. 

  • 259.
    Storm Edholm, Moa
    et al.
    Halmstad University, School of Health and Welfare.
    Nerpin, Therése
    Halmstad University, School of Health and Welfare.
    Kan motivationsklimat och målorientering predicera psykisk ohälsa?: En kvantitativ studie genomförd på golfspelande barn och ungdomar2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to examine whether the perceived motivation climate and goal orientation could predict mental illness among young golfers. A quantitative cross-sectional design was used and data was collected via questionnaires. A total of 134 golfers, 41 girls and 92 boys participated, aged 12–21 (M=15.06, SD=3.48). The result showed a positively significant relationship between performance climate and anxiety and depression, respectively. The study also found a positively significant association between task orientation and,- anxiety and depression, respectively. However, the results showed no statistically significant relationship between ego orientation and mental illness. Also, the study does not demonstrate any statistically significant relationship between mastery climate and mental illness. In conclusion, future studies should further investigate the phenomenon of mental illness in children and youth sports and its underlying factors of risks. Information about prevention of mental illness should further be applied in practice to prevent the occurrence of high levels of mental illness in sports.

  • 260.
    Stykova, Katarina
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Biomechanics and Biomedicine.
    The Validity and Reliability of Tests Aiming to Assess Core Stability in Healthy Subjects: A Literature Search2013Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Background: Measuring core stability (CS) is a commonly performed procedure among health care professionals, fitness trainers and coaches. According to literature, up to date, there is no widely accepted, valid and reliable assessment of CS in healthy subjects. However, no systematic review offering detailed view of measurement properties of CS tests is available. Consequently, learning more about validity and reliability of the commonly used tests aiming to assess CS in healthy people will help in decision making which test to incorporate when testing a client or conducting a study.

    Aim: To study validity and reliability of tests aiming to assess CS in healthy subjects based on a structured literature search.

    Methods: Literature search was performed in Medline, PEDro and Sport Discus databases up to March 2013. Criteria to assess the quality of the methodology studies and the measurement properties were adapted from a previous systematic review of performance-based measures.

    Results: Thirty-one articles of 2677 fulfilled selection criteria and offered reports on validity and reliability about 44 tests aiming to assess CS in healthy subjects including 12 strength, 13 endurance, 9 neuromuscular, 7 task-specific (“functional”) tests and 3 tests assessing power component of CS. Validity of 23/44 tests was reported in 12 articles – construct validity was reported for 13/44 tests, criterion validity for 2/44 tests and concurrent validity for 7/44 tests. In 24 articles reliability of 41/44 tests was reported - test-retest reliability was reported for 28/44 tests, intra-rater reliability for 13/44 tests and inter-rater reliability for 22/44 tests. Only 2% of all ratings were positive and 9% were negative. Evidence for most measurement properties reported in this study remained unknown because there was no information available (63%) or it was indeterminate (26%) and need further exploration. Based on the present information, the extensor dynamic endurance test and the double leg lowering test without the use of pressure biofeedback unit were the best rated tests. The single leg squat, the plank, the back and the front endurance tests were the worst rated tests.

    Conclusion:  Further good quality research investigating the measurement properties of CS measures in healthy people, is needed. Consensus on terminology and testing methods concerning CS in healthy subjects is required.

  • 261.
    Sundquist, Pontus
    Halmstad University, School of Business, Engineering and Science.
    A Test-Retest Reliability Study of Cooper's Test In Adolescents Aged 16-19 Years2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: The maximum rate of oxygen consumption (V̇O2max) can be measured through numerous tests, either directly or indirectly, where direct methods are considered more accurate, whereas indirect methods are more of an estimation with various degrees of reliability. Cooper's Test is one example of an indirect method considered reliable in estimating V̇O2max, with reliability coefficients ranging between 0.897-0.960. Cooper's Test is thus a test that is often used when estimating V̇O2max. However, there is a lack of test-retest research done utilising Cooper's Test on a younger population, which is the reasoning behind this study focusing on adolescents. Aim: The aim of the study was to study the test-retest reliability of Cooper's Test, in adolescents aged 16-19 years. Methods: Twelve healthy adolescents, aged 16-19 years, attending a sports high school participated in a test-retest study (test 1 and test 2) of Cooper's Test. The tests were performed on the short sides of a synthetic grass field, with 66 metres between the two sides, were the participants were instructed to cover as much distance as possible, with high motivation and intensity, for the whole 12 minutes of the Cooper's Test. Each individual participant's data was measured, recorded and later analysed. The total distance covered was then translated into miles and compared to Cooper's original estimated maximal oxygen consumption table for an estimation of each participant's V̇O2max value in ml*kg-1*min-1 from test 1 and test 2. The data from the test-retest and its variance was then analysed by a two-way mixed model of intraclass correlation coefficient (ICC) with an absolute agreement type. Results: The analysed data from test 1 and test 2 of Cooper's Test showed the results of an ICC (95% CI) of 0.06 (-0.353 to 0.544), indicating a substantial error variance between the two separate Cooper's Tests. Conclusion: The data and analysis from this study implied that Cooper's Test was not reliable in the study population, consisting of adolescents. Possible factors influencing the result however were lack of participant motivation and the level of intensity variance during the test-retest of Cooper's Test. Further researchers and amateur and professional users should keep these factors in mind when utilising Cooper's Test to predict V̇O2max. More research is needed within this study's age population to draw any definite conclusions on the reliability of Cooper's test on adolescents.

  • 262.
    Sundqvist, Charlotte
    et al.
    Halmstad University, School of Social and Health Sciences (HOS).
    Ekström, Cajsa
    Halmstad University, School of Social and Health Sciences (HOS).
    TRANSITION FROM INITIATION TO DEVELOPMENT IN ICE-HOCKEY; PLAYERS, COACHES AND PARENTS’ PERSPECTIVES2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to investigate what factors facilitate young ice hockey players’ continuation or dropout from sport. The study considers active players’, dropout player’s, coaches’ and parents’ perspectives. The main model that is used in the study is push/pull/anti-push/anti-pull framework (Fernandez, Stephan & Fouquereau, 2006). Other models used in the study are the developmental model (Wylleman & Lavallee, 2004) and the career transition model (Stambulova, 2003). The interviews were conducted with eight participants including three active players, one dropout player, two coaches, one parent to an active player and one parent to a dropout player. Semi-structured interview guides based on Athletes Retirement Decision Inventory (ARDI) (Fernandez et al, 2006) were used. The results showed that friends and fellowship in the team were the biggest factors that facilitate for a player to continue in ice-hockey. Underlying factors that can influence a player to dropout are high amount of hard training and a lack of organization in the club. Factors outside ice-hockey that can influence a player to dropout is his will to focus more on school and socializing with friends outside the sport.

  • 263.
    Svensson, Erik
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Biomechanics and Biomedicine.
    Hur starkt korrelerar unilateral hoppförmåga vertikalt respektive horisontellt med sprintförmåga upp till 30 meter hos manliga fotbollsspelare?2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund och syfte

    Under en fotbollsmatch rör sig spelarna någonstans mellan 9-12 km i olika hastigheter. Ungefär 10 % av denna sträcka genomförs genom löpningar av hög intensitet, där de flesta sprinter sker kring 2 sekunder. Under 2 sekunder hinner en spelare ungefär 10-15 meter, beroende på spelarens accelerationsförmåga. Studier har visat ett samband mellan hopp och sprintförmåga både bilateralt och unilateralt. Dock är det få studier som följt förloppet från start till 30 meter med mellantider om varje 5 meter och få studier genomförda unilateralt hos fotbollsspelare. Syftet med studien var att undersöka sambandet mellan unilateral horisontell respektive vertikal hoppförmåga med sprintförmåga hos manliga fotbollsspelare.

    Metod

    22 manliga fotbollsspelare från division 4 elit deltog i studien. Testprotokollet bestod av unilaterala vertikalhopp (CMJ och SJ), unilateralt stående längdhopp samt sprinttest på 30 meter med mellantider på 5, 10, 15, 20 och 25m. Samtliga hopptester genomfördes med händerna vid höfterna och sprinttesterna genomfördes med stående start 60cm före första sensorn. Pearsons korrelationskoefficient (r) undersöktes mellan hopp och sprintförmåga med gränsvärdena r ≤ 0.35 för svaga, r = 0.36-0.67 för moderata och r = 0.68-1.0 för starka korrelationer, där korrelationer r ≥ 0.9 ansågs vara mycket starka.

    Resultat

    Överlag ökade sambanden mellan alla hopptester desto längre sprintsträckor som genomfördes. SJ visade starkast korrelationer vid nästan alla sprintsträckor. Starkaste sambandet mellan stående längdhopp och sprintförmåga fanns mellan hopp på vänster ben och mellantiden på 25 meter (r=-0,64). Starkaste sambandet mellan CMJ och sprintförmåga fanns mellan hopp på vänster ben och sprintsträckan 30 meter (r=-0,69). Starkast korrelation av alla hopptester upptäcktes mellan SJ och 30 meter sprint (r = -0,73).

    Slutsats

    Korrelationen mellan unilateral hoppförmåga horisontellt respektive vertikalt och sprintförmåga blir starkare ju längre sträckan blir, med sprinttester utförda upp till 30 meter. Den starkaste korrelationen ses mellan SJ och sprintsträckan 30 meter.

  • 264.
    Svensson, Hannah
    Halmstad University, School of Business, Engineering and Science.
    A correlation study between 10 and 15 meter sprint and vertical jump height in young female teamgymnasts2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Teamgym is originally from Scandinavia and the first competition was held in Finland in 1996. The sport includes parts such as trampette, tumbling and floor programs which is performed by the whole team which often consists of six to twelve gymnasts. Trampette and tumbling program consists of three series of tumbles and vaults performed by six gymnasts of the team. The floor program is three minutes long and performed by the team. Female elite gymnasts are often short, lightweight and have a good strength and power and are very flexible and limber. Jumping movements are common in this sport especially to vault and floor programs. It is also preferable that the gymnasts achieves a high sprint speed in order to carry out the movements that are included in the sport. Plyometric training along with resistance training has proven to have positive effects on the gymnasts jumping ability. Especially the jumping ability is incredibly important for a gymnast and for its development in the sport. Plyometrics improves not only the acceleration during the sprint, but also increases the athlete’s strength in the lower extremity. Very few previous studies have been done on gymnastics, particularly in teamgymnastic. Aim: The aim of this study was to investigate if there is any linear correlation between vertical jump height and 10 and 15 meter sprint in teamgym gymnastics. Method: 17 young female teamgymnasts, 12-17 years old, were tested in 10 and 15 meter sprint and two different vertical jumps, countermovement jump with arm swing (CMJa) and squat jump (SJ). The highest was correlated with the fastest sprint time. To analyze the correlation between vertical jumps and sprint the Spearman’s rank correlation (rs) was used. Result: CMJa shows a moderate negative correlation to 10 meter sprint (rs = -0.447) and CMJa also shows moderate negative correlation to 15 meter sprint (rs = -0.488). SJ shows a weak negative correlation to 10 meter sprint (rs = -0.23). SJ also shows weak negative correlation to 15 meter sprint (rs = -0.16). When controlling for the weight, SJ and both sprints went from a weak correlation to a strong correlation. Conclusion: The strongest correlation was found between CMJa and 15 meter sprint. When controlling for the weight, SJ and both sprints went from a weak correlation to a strong correlation. The result showed that the test subjects jumped higher during CMJa than during SJ, with a median of 36.0 compared with 30.0 centimeters. No previous studies have examined these variables and their relationship on teamgymnasts. Further research should be done on the teamgymnasts, since very little previous research has been done in this area.

  • 265.
    Söderberg, Sofia
    Halmstad University, School of Business, Engineering and Science.
    Samband mellan relativ styrka, upplevd ansträngning och prestation i en standardiserad högintensiv styrketräningssekvens med och utan en föregående maxning i stöt hos Crossfitatleter2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background: Crossfit can be seen as one of the foremost workout trends in the world. Nevertheless, there is a lack of research regarding the physical adaptations of the sport and which factors may affect Crossfit performance. Crossfit has been shown to improve both aerobic and anaerobic performance, such as increased maximal oxygen uptake (VO2max) and increased power development (e.g. peak power), but also have positive effects on a person’s body composition and well-being. Previous research has also shown that strength is associated with Crossfit performance and that body weight can affect performance in other sports such as weightlifting and sprint.Methods: The study was conducted with an experimental cross-over design. Sixteen subjects between 18-50 years who regularly performed Crossfit (at least two times a week the last six month) participated in the study. The study consisted of two test occasions separated by one week. One test occasion contained a maximal strength test (1RM, 1-repetition-maximum) in clean and jerk before the Crossfit workout (WOD, workout of the day) ”Grace” was performed, and time was taken. Immediately after Grace the subjects rated their perceived exertion (rate of perceived exertion, RPE) using the Borg-scale. At the other test occasion, the subjects performed as many clean and jerks as at the 1RM test, but at a lower weight and less rest between the repetitions, before performing Grace.Results: Fifteen subjects conducted both tests. The study showed that there was no correlation between relative strength and the performance in Grace either without (r = -0,07) or with (r = 0,05) a previous 1RM test in clean and jerk. However, the result showed that there was a small correlation between RPE and the performance in Grace without a previous 1RM test in clean and jerk (r = 0,14) and a medium correlation between RPE and the performance in Grace with a previous 1RM test in clean and jerk (r = 0,40). Conclusions: The result indicates that body weight and strength don’t affect performance in Grace either without or with a previous 1RM test in clean and jerk. However, the high p- values means that the result of the study can’t be generalized to other than the subjects included in the current study. The conclusion is that further research needs to be conducted to determine how relative strength and RPE affect and correlate with Crossfit performance. 

  • 266.
    Sörensen, Joel
    et al.
    Halmstad University, School of Health and Welfare.
    Johansson Quartieri, Oskar
    Halmstad University, School of Health and Welfare.
    Upplevda utmaningar och copingstrategier hos före detta RIG-studenter: En retrospektiv longitudinell studie2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of the study was to investigate the experiences of challenges and coping strategies among former student-athletes who had studied at different RIG’s in Sweden. Seven participants, four women and three men, in the ages between 22–31 (M=25.1, SD=3.1) took part in the study. To investigate the purpose, a semi-structured interview guide was applied, based on the holistic athletic career model (Wylleman et al., 2013). Questions about sport, studies, private life and a combination of all three factors were central. The result showed that the biggest challenge during the first year was adapting to a new environment, the hardest challenge overall during the second year consisted of dealing with a higher athletic and academic level as well as time management and the most important challenge during the third year was dealing with even higher athletic levels and dealing with the future, what would happen after RIG. The factors that were mentioned the most were the difficulty to dedicate enough time to the sport, the studies and the private life, dealing with injuries, as well as making time for personal activities and recovery. The study also showed that the most important coping strategy consisted of social support from family, friends and coaches, in terms of instrumental and emotional support. Even personal resources, for example self-discipline, self-regulation, planning and stress management were important coping strategies. Based on the result of the present study, it is recommended that coaches, teachers and parents get a better understanding of the life as a RIG-student, in order to normalize the concept of dual careers in society.

  • 267.
    Tebelius, Ulla
    Halmstad University, School of Social and Health Sciences (HOS).
    Girls involvement in Sport - Dynamics of sport participation of 12-19 years old female athletes2001In: Kinanthropologica, ISSN 1212-1428, Vol. 37, no 2, p. 67-80Article in journal (Refereed)
    Abstract [en]

    This paper discusses the significance of sports participation among girls at adolescence. The empirical study consisted of two complete sports teams (sports gymnastics and football) of 26 female-athletes. The girls were interviewed on four occasions between the ages of 12 and 19. The girls’ participation is described in an interactionist perspective as a socialisation process, which included learning the language, rules and norms of sport as well as creating an image of themselves as sports girls. Being more involved they realised the discrepancy between the norms of sport and their view of themselves as young females. They handled this discrepancy in different ways by either adopting the sports norms, behaving playful in relation to their sport or by choosing a less regulated activity. This should be seen as conscious choices. The girls were positioning themselves as physical active females within the cultural and ideological context of the contemporary social world.

  • 268.
    Tisell, Tobias
    et al.
    Halmstad University, School of Health and Welfare.
    Hellberg, Johan
    Halmstad University, School of Health and Welfare.
    Det sociala stödets betydelse för skadade idrottares psykologiska välbefinnande under rehabilitering2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to examine if injured athletes perceived autonomy support during rehabilitation had an indirect effect on: (a) positive affects via need-satisfaction and self-determined motivation, and (b) negative affects via need-thwarting and controlled motivation. Based on the purpose, two hypothetical models were designed and tested through mediation analysis. The study used a quantitative cross-sectional design where the data collection was performed through a strategic convenience sample. There was a total of 71 competitive athletes between the age of 15 and 51 (M=21 SD=5.1) who participated in the study, all of them had been affected by an acute or serious injury. As it   showed that autonomy support did not have an indirect effect on any of the affects via (a) need-satisfaction and self-determined motivation, or (b) need-thwarting and controlled motivation together the aspects from the models could not be considered confirmed. However, the result showed that autonomy support had an indirect effect on the affects when the relation only mediated through need-satisfaction or need thwarting which means that certain segments from the models are in line with the result. The present study highlights that injured athletes increase their psycho logical well-being when the social support from physiotherapists fulfills the basic psychological needs. Using the results from recent study, physiotherapist can get a broaderunderstanding in how their support can affect an athlete’s well-being during their rehabilitation.

  • 269.
    Tranaeus, U.
    et al.
    Stockholm Sports Trauma Research Center, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
    Heintz, E.
    Swedish Council on Health Technology Assessment, Stockholm, Sweden & Center for Medical Technology Assessment, Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
    Johnson, Urban
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI).
    Forssblad, M.
    Stockholm Sports Trauma Research Center, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
    Werner, S.
    Stockholm Sports Trauma Research Center, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
    Injuries in Swedish floorball: a cost analysis2017In: Scandinavian Journal of Medicine and Science in Sports, ISSN 0905-7188, E-ISSN 1600-0838, Vol. 27, no 5, p. 508-513Article in journal (Refereed)
    Abstract [en]

    The epidemiology of sport injuries is well documented. However, the costs are rarely discussed. Previous studies have presented such costs in specific sports or localization. No study has investigated the costs related to injuries in elite floorball. Thus, the aim of this study was to estimate cost of injuries in Swedish elite floorball players. During 1year, 346 floorball players were prospectively followed. All time-loss injures were recorded. The injured players were asked to complete a questionnaire regarding their costs tied to the injury. Mean costs were calculated by multiplying the total resource use with the collected unit costs and dividing these total costs with the number of injuries as well as players. The results showed that the average cost per injury increased with the level of severity and ranged from 332 to 2358 Euros. The mild and moderate overuse injuries were costlier than the corresponding traumatic injuries. However, the severe traumatic injuries were associated with higher costs than overuse injuries. Knee injuries were the costliest. Our results indicate that there are costs to be saved, if floorball injuries can be avoided. They should be of interest to decision makers deciding whether to invest in preventive interventions. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd

  • 270.
    Tranaeus, Ulrika
    et al.
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI). Stockholm Sports Trauma Research Center, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
    Götesson, Eva
    Rehab Öppenvård, TioHundra, Norrtälje, Sweden.
    Werner, Suzanne
    Stockholm Sports Trauma Research Center, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden & Capio Artro Clinic, Sophiahemmet, Stockholm, Sweden.
    Injury Profile in Swedish Elite Floorball: A Prospective Cohort Study of 12 Teams2016In: Sports Health: a multidisciplinary approach, ISSN 1941-7381, Vol. 8, no 3, p. 224-229Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Floorball is an indoor team sport with growing popularity worldwide characterized by rapid accelerations, decelerations, and cutting and pivoting movements. While injuries are common, there are few high-quality epidemiological investigations of floorball injuries. Therefore, the aim of this study was to determine the incidence and severity of injuries in male and female elite-level floorball players in Sweden.

    HYPOTHESIS: The incidence of injuries has not decreased; female players are more vulnerable to injury than male players.

    STUDY DESIGN: Prospective cohort study.

    LEVEL OF EVIDENCE: Level 3.

    METHODS: Twelve floorball teams (6 male, 6 female) in the Swedish premiere leagues were followed for 1 year (preseason, game season, and the entire year). The team medical staff reported injury incidence, location, type (traumatic or overuse), and severity. Differences between male and female players were analyzed using the Mann-Whitney U test.

    RESULTS: The injury incidence was greater in female players during preseason (22.9 vs 7.4, P = 0.01), game season (39.5 vs 28.3, P = 0.002), as well as the whole year combined (33.9 vs 20.8, P = 0.02). The thigh was the most common injury location in male players and the ankle in female players. Overuse injuries were more common among men and were primarily back problems. Traumatic injuries were more common in women-mainly knee and ankle injuries. Most injuries were of mild severity. A greater number of anterior cruciate ligament injuries occurred in women (n = 11) than in men (n = 2).

    CONCLUSION: The injury incidence was significantly greater in female floorball players throughout the entire floorball year. Male players sustained mostly overuse injuries while female players suffered traumatic injuries. The majority of injuries in floorball were mild, irrespective of player sex.

    CLINICAL RELEVANCE: Knowledge of the incidence and severity of floorball injuries is an essential step in the sequence of injury prevention. Future research should focus on identifying injury mechanisms and risk factors for these injuries to develop injury prevention strategies.

     © 2016, 2016 The Author(s).

  • 271.
    Vallmark Jansson, Jasper
    Halmstad University, School of Social and Health Sciences (HOS).
    ”Winning isn’t everything.” A Mixed-method study of a Swedish female handball team throughout a competitive season2014Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of the present study was to (1) examine throughout the season dynamics of the handball team's performance and related factors (i.e. emphasizing leadership, emotions and concentration) as perceived by the coach and the captain. The analysis was used to motivate the emotions being studied in objective two (2) examine the handball team during successful and less successful games in terms of the dynamics of the players’ emotions, concentration and performance between two halves of the game and after time-outs. Informants for objective 1, was the team coach and the team captain. Objective 2 of the study consisted of 15 women all playing in the same team. The study includes longitudinal data over a ten game period containing five successful and five less successful games. Data was collected after games using the ECPP(H) developed by Olausson and Vallmark-Jansson (2013). In-depth narrative interviews were used. Three analyses were made: (1) sjuzet- fabula, (2) holistic- content and (3) categorical-content analysis. Poetic representation was used to present parts of the results. The results showed shifts in the dynamics of performance, possible explanation to the shift of dynamics of emotions, concentration and performance and different types of leadership styles demonstrated throughout the season. Furthermore, similarities and diversities were found between the coach and captain’s perceptions of the season in focus. Finally, practical team-specific applications are suggested, such as working with emotional control in order to help the team enhance their performance.

  • 272.
    Verikas, Antanas
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research. Kaunas University of Technology, Kaunas, Lithuania.
    Parker, James
    Halmstad University, School of Business, Engineering and Science, The Rydberg Laboratory for Applied Sciences (RLAS).
    Bacauskiene, Marija
    Kaunas University of Technology, Kaunas, Lithuania.
    Olsson, M. Charlotte
    Halmstad University, School of Business, Engineering and Science, The Rydberg Laboratory for Applied Sciences (RLAS).
    Exploring relations between EMG and biomechanical data recorded during a golf swing2017In: Expert systems with applications, ISSN 0957-4174, E-ISSN 1873-6793, Vol. 88, p. 109-117Article in journal (Refereed)
    Abstract [en]

    Exploring relations between patterns of peak rotational speed of thorax, pelvis and arm, and patterns of EMG signals recorded from eight muscle regions of forearms and shoulders during the golf swing is the main objective of this article. The linear canonical correlation analysis, allowing studying relations between sets of variables, was the main technique applied. To get deeper insights, linear and nonlinear random forests-based prediction models relating a single output variable, e.g. a thorax peak rotational speed, with a set of input variables, e.g. an average intensity of EMG signals were used. The experimental investigations using data from 16 golfers revealed statistically significant relations between sets of input and output variables. A strong direct linear relation was observed between lin- ear combinations of EMG averages and peak rotational speeds. The coefficient of determination values R2 = 0 . 958 and R2 = 0 . 943 obtained on unseen data by the random forest models designed to predict peak rotational speed of thorax and pelvis , indicate high modelling accuracy. However, predictions of peak rotational speed of arm were less accurate. This was expected, since peak rotational speed of arm played a minor role in the linear combination of peak speeds. The most important muscles to predict peak rotational speed of the body parts were identified. The investigations have shown that the canon- ical correlation analysis is a promising tool for studying relations between sets of biomechanical and EMG data. Better understanding of these relations will lead to guidelines concerning muscle engagement and coordination of thorax, pelvis and arms during a golf swing and will help golf coaches in providing substantiated advices. ©2017 Elsevier Ltd. All rights reserved.

  • 273.
    Verikas, Antanas
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research. Kaunas University of Technology, Kaunas, Lithuania.
    Vaiciukynas, Evaldas
    Kaunas University of Technology, Kaunas, Lithuania.
    Gelzinis, Adas
    Kaunas University of Technology, Kaunas, Lithuania.
    Parker, James
    Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS).
    Olsson, M. Charlotte
    Halmstad University, School of Business, Engineering and Science, Biological and Environmental Systems (BLESS).
    Electromyographic Patterns during Golf Swing: Activation Sequence Profiling and Prediction of Shot Effectiveness2016In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 16, no 4, article id 592Article in journal (Refereed)
    Abstract [en]

    This study analyzes muscle activity, recorded in an eight-channel electromyographic (EMG) signal stream, during the golf swing using a 7-iron club and exploits information extracted from EMG dynamics to predict the success of the resulting shot. Muscles of the arm and shoulder on both the left and right sides, namely flexor carpi radialis, extensor digitorum communis, rhomboideus and trapezius, are considered for 15 golf players (∼5 shots each). The method using Gaussian filtering is outlined for EMG onset time estimation in each channel and activation sequence profiling. Shots of each player revealed a persistent pattern of muscle activation. Profiles were plotted and insights with respect to player effectiveness were provided. Inspection of EMG dynamics revealed a pair of highest peaks in each channel as the hallmark of golf swing, and a custom application of peak detection for automatic extraction of swing segment was introduced. Various EMG features, encompassing 22 feature sets, were constructed. Feature sets were used individually and also in decision-level fusion for the prediction of shot effectiveness. The prediction of the target attribute, such as club head speed or ball carry distance, was investigated using random forest as the learner in detection and regression tasks. Detection evaluates the personal effectiveness of a shot with respect to the player-specific average, whereas regression estimates the value of target attribute, using EMG features as predictors. Fusion after decision optimization provided the best results: the equal error rate in detection was 24.3% for the speed and 31.7% for the distance; the mean absolute percentage error in regression was 3.2% for the speed and 6.4% for the distance. Proposed EMG feature sets were found to be useful, especially when used in combination. Rankings of feature sets indicated statistics for muscle activity in both the left and right body sides, correlation-based analysis of EMG dynamics and features derived from the properties of two highest peaks as important predictors of personal shot effectiveness. Activation sequence profiles helped in analyzing muscle orchestration during golf shot, exposing a specific avalanche pattern, but data from more players are needed for stronger conclusions. Results demonstrate that information arising from an EMG signal stream is useful for predicting golf shot success, in terms of club head speed and ball carry distance, with acceptable accuracy. Surface EMG data, collected with a goal to automatically evaluate golf player’s performance, enables wearable computing in the field of ambient intelligence and has potential to enhance exercising of a long carry distance drive.

  • 274.
    Vukojevic, Slavica
    Halmstad University, School of Social and Health Sciences (HOS).
    Möjligheter och hinder med framtidsarbetet "Morgondagens idrott": Ur kontaktpersonernas synvinkel2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med denna studie är att beskriva deltagandeidrottsföreningars redogörelser kring framtidsarbetet inomframtidsgrupperna i projektet ”Morgondagens idrott” utifrån ettlärande perspektiv. Detta med hjälp av frågeställningen: vilkamöjligheter respektive hinder upplevde kontaktpersonerna att detvarit med framtids- och utvecklingsarbetet i derasidrottsföreningar? Studien är intressant då ingen tidigare forskningpå detta projekt finns tillgängligt. Studien genomfördes med hjälpav en kvalitativ totalundersökning. Resultatet av intervjuerna visaratt möjligheter som kontaktpersonerna såg var meningsfullhet,stöd, framtidstänk, rekrytering och utbildning. Hindrena varekonomi, ledarrekrytering och genomförande.

  • 275.
    Wiberg, Alexandra
    et al.
    Halmstad University, School of Health and Welfare.
    Bergman, Daniel
    Halmstad University, School of Health and Welfare.
    RELATIONEN MELLAN AUTONOMISTÖD OCH FYSISK AKTIVITET: En kvantitativ studie baserad på elever i årskurs 92015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of the study was to examine, in a population of ninth grade high-school students,whether autonomy support from parents and the fulfilment of basic psychological needspredicted participation in physical activity both in leisure time and in PE classes. Based onprevious research we hypothesised that autonomy support would have an indirect effect onparticipation in physical activity in leisure time and school sports through the psychologicalbasic needs.The study involved 193 students from ninth grade in the Swedish school system.Mediation analyses were performed to investigate the stated hypotheses. The results showedthat a positive indirect effect from autonomy support on participation in physical activity inleisure time through psychological basic needs. Further there was no statistically significantcorrelation between autonomy support, basic needs and participation in PE classes.Based on this study we concluded that autonomy supports as well as the psychologicalbasic needs are two important factors to focus on to get high-school students to be physicallyactive.

  • 276.
    Wikander, Robert
    et al.
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Biomechanics and Biomedicine.
    Augustsson, Johan
    Halmstad University, School of Business and Engineering (SET), Biological and Environmental Systems (BLESS), Biomechanics and Biomedicine.
    Kan ett nyutvecklat handledsstöd förbättra möjligheterna för funktionell träning av övre extremiteten för reumatiker?: En SEMG-studie2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In a general rehabilitation phase weight training is an important part because of muscle weakness may contribute lower functional ability and could lead to decreasing movement patterns. Limited range of motion (ROM) in the upper extremity is a contributing factor to individuals unable to perform everyday activities. Several studies have documented that patients with rheumatoid arthritis (RA) have impaired hand function due to reduced grip strength and limitations in ROM. Functional training is designed to strengthen the weak muscles that cause imbalance or pain while your body becomes more mobile. Using everyday movements and implement them with training will make the training more functional. The purpose of this study was to develop and evaluate a new wrist support that increases the possibilities to functional training of upper extremities for rheumatoid arthritis patients.

    The study involved 27 women, 8 were diagnosed with RA and 19 healthy subjects. The average age was 38 year (20-73year). Muscle activity in m. trapezius and m. rhomboideus was measured using surface electromyography (sEMG) in three exercises to compare the differences between both RA and healthy, and with and without a developed product.

    The results showed that it was possible to perform functional training of upper extremities without using the hand grip strength. There were no significant differences in muscle activity in m. trapezius and m. rhomboideii with or without the product. The results also showed that rheumatic muscles are not different from healthy muscles. The participants' subjective opinions were very positive there 24 of 27 participants found it easier to carry out the exercise

    with the product and 9 of 27 felt it was easier to focus on exercise.

    The study resulted in a new wrist support that allows functional training of m.trapezius and m.rhomboideus for patients with rheumatoid arthritis.

  • 277.
    Zervas, Yannis
    et al.
    University of Athens, Greece.
    Stambulova, Natalia
    Halmstad University, School of Social and Health Sciences (HOS), Centre of Research on Welfare, Health and Sport (CVHI).
    Physical activity and cognitive functioning1999In: Psychology for physical educators / [ed] Yves Vanden Auweele, Frank Bakker, Stuart Biddle, Marc Durand, Roland Seiler, Champaign, IL: Human Kinetics , 1999, p. 135-154Chapter in book (Other academic)
  • 278.
    Zlocki, Jakob
    et al.
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Center for Sport and Health Science (CIHF).
    Johansson, Mattias
    Halmstad University, School of Health and Welfare, Centre of Research on Welfare, Health and Sport (CVHI), Center for Sport and Health Science (CIHF).
    Mindfulness och dess effekt på uppmärksamhets- och perceptionsförmåga bland tävlingsinriktade idrottsutövare: En experimentell pilotstudie.: 2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to examine the effect of one 45 minute mindfulness session on: (1) Sustained attention abilities, (2) executive attention abilities, and (3) perceptual abilities. An experimental study was carried out on athletes (n = 48) who all met the specific requirements for being able to participate in this study. The results showed no significant difference in all three variables between the experiment group and the control group. In conclusion, the results and implications are discussed in relation to previous research, supported by theoretical frames of references. 

3456 251 - 278 of 278
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf