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Article Dans Une Revue Pediatric Exercise Science Année : 2022

Sex-related differences in oxygen consumption recovery after high-intensity rowing exercise during childhood and adolescence

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Résumé

Purpose:
To determine sex-related differences in oxygen consumption ( ) recovery after high-intensity exercise during childhood and adolescence.

Methods :
Forty-two boys and 35 girls (10–17 y) performed a 60-second all-out test on a rowing ergometer. Postexercise recovery was analyzed from (1) the recovery time constant obtained from a biexponential model (τ1 ) and (2) excess postexercise oxygen consumption calculated over a period of 8 minutes (EPOC 8 ) and until τ 1 was reached (EPOC τ 1 ). Multiplicative allometric modeling was used to assess the concurrent effects of body mass or lean body mass, and age on EPOC 8 and EPOC τ 1 .

Results:
EPOC 8 increased significantly more in boys from the age of 14 years. However, the sex difference was no longer significant when EPOC 8 was analyzed using an allometric model including body mass + age or lean body mass + age. In addition, despite a greater increase in EPOC τ 1 in boys from the age of 14 years, τ 1 was not significantly different between sexes whatever age.

Conclusion:
While age and lean body mass accounted for the sex-related differences of EPOC during childhood and adolescence, no significant effect of age and sex was observed on the recovery time constant after high-intensity exercise.
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Dates et versions

hal-03906024 , version 1 (19-12-2022)

Identifiants

Citer

Joffrey Bardin, Hugo Maciejewski, Allison Diry, Claire Thomas, Sébastien Ratel. Sex-related differences in oxygen consumption recovery after high-intensity rowing exercise during childhood and adolescence. Pediatric Exercise Science, 2022, 34 (4), pp.210-218. ⟨10.1123/pes.2021-0173⟩. ⟨hal-03906024⟩
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