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Sex comparison of white blood cell responses to acute vigorous-intensity aerobic exercise
Turku PET Centre, University of Turku, Turku, Finland; Turku University Hospital, Turku, Finland.
Turku PET Centre, University of Turku, Turku, Finland; Turku University Hospital, Turku, Finland.
Turku PET Centre, University of Turku, Turku, Finland; Turku University Hospital, Turku, Finland.
Paavo Nurmi Centre, Turku, Finland.
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2023 (English)In: Acta Physiologica, ISSN 1748-1708, E-ISSN 1748-1716, Vol. 239, no S728, p. 44-45, article id e14044Article in journal, Meeting abstract (Refereed) Published
Abstract [en]

Background: It is widely accepted that exercise alters the number and function of circulating leukocytes, and many factors are suggested to influence this phenomenon. The aim here was to compare white blood cell mobilization between sexes after acute vigorous-intensity exercise bout.

Methods: The study included healthy and physically active subjects, 10 men (aged 26 (SD 7) years) and 10 women (aged 33 (SD 8) years). Participants performed a 30-min cycling ergometer exercise at 70% VO2max. Blood samples were drawn at rest and 3 min, 1 and 2 h post-exercise. Changes in total leukocyte, neutrophil, lymphocyte, monocyte, eosinophil, and basophil count were analyzed and corrected for plasma volume change.

Results: Women had higher lymphocyte counts and lower eosinophil proportion of total leukocytes compared to men at all time points. Acute exercise significantly increased the number of total leukocytes and all leukocyte subpopulations excluding eosinophils in both women and men. The mobilization of all leukocyte subpopulations was similar in both sexes, but mobilization of total leukocytes, as a percentage change from rest, was greater in men. Increase in total leukocyte, neutrophil, and lymphocyte counts correlated positively with lactate concentration at 3-min timepoint and decrease in lymphocyte and basophil count after exercise correlated negatively with mean exercising heart rate in both sexes.

Conclusion: Our findings indicate that mobilization of total leukocytes is greater in men. The sex-difference however is small and not observed in any leukocyte subpopulations. Further, exercise intensity driven physiological perturbation has a role in immune cell mobilization.

Place, publisher, year, edition, pages
Chichester: Wiley-Blackwell, 2023. Vol. 239, no S728, p. 44-45, article id e14044
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:hh:diva-52241DOI: 10.1111/apha.14044ISI: 001085852300162OAI: oai:DiVA.org:hh-52241DiVA, id: diva2:1819896
Conference
Physiology in Focus 2023 (SPS‐FEPS 2023), Tallinn, Estonia, 14‐16 September, 2023
Available from: 2023-12-15 Created: 2023-12-15 Last updated: 2023-12-15Bibliographically approved

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Heinonen, Ilkka

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