Summary
The responses of nine men and nine women to brief repetitive maximal exercise have been studied. The exercise involved a 6-s sprint on a non-motorised treadmill repeated 10 times with 30 s recovery between each sprint. The total work done during the ten sprints was 37,693±3,956 J by the men and 26,555±4,589 J by the women (M > F,P<0.01). This difference in performance was not associated with higher blood lactate concentrations in the men (13.96± 1.70 mmol·−1) than the women (13.09±3.04 mmol·l−1). An 18-fold increase in plasma adrenaline (AD) occurred with the peak concentration observed after five sprints. The peak AD concentration in the men was larger than that seen in the women (9.2 +- 7.3 and 3.7 ± 2.4 nmol · l−1 respectively,P<0.05). The maximum noradrenaline (NA) concentration occurred after ten sprints in the men (31.6±10.9 nmol·l−1) and after five sprints in the women (27.4 ± 20.8 nmol · l−1). Plasma cardiodilatin (CDN) and atrial natriuretic peptide (ANP) concentrations were elevated in response to the exercise. The peak ANP concentration occurred immediately postexercise and the response of the women (10.8 ± 4.5 pmol · l−1 was greater than that of the men (5.1 ± 2.6 pmol · l−1,P<0.05). The peak CDN concentrations were 163 ± 61 pmol · l−1 for the women and 135 ± 61 pmol · l−1 for the men. No increases in calcitonin gene related peptide (CGRP) were detected in response to the exercise. These results indicate differences between men and women in performance and hormonal responses. There was no evidence for a role of CGRP in the control of the cardiovascular system after brief intermittent maximal exercise.
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Brooks, S., Nevill, M.E., Meleagros, L. et al. The hormonal responses to repetitive brief maximal exercise in humans. Europ. J. Appl. Physiol. 60, 144–148 (1990). https://doi.org/10.1007/BF00846035
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DOI: https://doi.org/10.1007/BF00846035