hh.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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
Investigating the effects of pre-exhausting a synergist prior to a compound exercise.: An electromyographic study
Halmstad University, School of Business, Engineering and Science. 920801117.
2017 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Background: Pre-exhausting a synergist prior to a compound exercise has been shown to alter the firing patterns in the muscles during the exercise. Pre-exhausting a muscle is done by exercising a muscle group to fatigue with a single joint exercise prior to an exercise.

Aim: The purpose of this study was to further investigate the effects of pre-exhausting the triceps brachii prior to performing a bench press, measuring the EMG activity in pectoralis major, triceps brachii and deltoid anterior.

Methods: 30 participants, men (n=15) and women (n=15), performed two different protocols (T1 and T2) while the muscle activity was measured with surface EMG. Electrodes were placed on pectoralis major, triceps brachii and deltoid anterior. Maximum voluntary isometric contraction (MVIC) was performed prior to performing protocols in order to get reference values.

Results: Pectoralis major and deltoid anterior activation was significantly higher when preexhausting triceps brachii before bench press compared to no PRE, but no significant increase was seen in triceps brachii (p=0.000, p=.0009 and p=0.405 respectively) MVIC expressed in percentages and mean values ± standard deviation during protocol T1 for pectoralis major 45.3(±12.4), triceps brachii 56.28(±15.9) and deltoid anterior 63.45(±31.4) and during protocol T2 pectoralis major 56.41(±18.4), triceps brachii 58.49(±20.07) and deltoid anterior 71.65(±42.7).

Conclusion: These results suggest that pre-exhausting a synergist prior to a compound exercise may change the muscle activity in the involved muscles. This can be used in a practical sense to develop weak points in the muscles by changing the activation pattern in the muscles hence being able to target specific muscles better.

Place, publisher, year, edition, pages
2017.
National Category
Biomedical Laboratory Science/Technology
Identifiers
URN: urn:nbn:se:hh:diva-35135OAI: oai:DiVA.org:hh-35135DiVA: diva2:1146692
Subject / course
Biomedicine Targeting Physical Education
Educational program
Exercise Biomedicine, 180 credits
Supervisors
Examiners
Available from: 2017-10-11 Created: 2017-10-03 Last updated: 2017-10-12Bibliographically approved

Open Access in DiVA

fulltext(276 kB)34 downloads
File information
File name FULLTEXT02.pdfFile size 276 kBChecksum SHA-512
3a589d568d8b95ace9a5239aa17d85ff46ea4527f022639c145dca08d5ca438b686e6d53b127c703af1489335a3fd566dbca475cedd34e0ad86f9ae36ec68d1f
Type fulltextMimetype application/pdf

By organisation
School of Business, Engineering and Science
Biomedical Laboratory Science/Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 34 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 132 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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