Basal and stress-induced salivary testosterone variation across the menstrual cycle and linkage to motivation and muscle power.

Abstract:

:This study investigated salivary testosterone (sal-T) variation across the menstrual cycle in female athletes, at different competitive levels, and its association with motivation and neuromuscular power. Six elite and 16 non-elite female athletes were monitored on days 7 (D7), 14 (D14), and 21 (D21) across 3 menstrual cycles for basal sal-T concentrations and self-appraised motivation to train and compete. Two further measures were taken on D7, D14, and D21 across 2 menstrual cycles: (1) the sal-T response (delta change) to a physical stress test and (2) peak power (PP) response to a 6-second cycle sprint following a post-activation potentiation (PAP) stimulus. Basal sal-T concentrations increased by 17 ± 27% from D7 to D14 before decreasing by -25 ± 43% on D21 (P < .05), but this result was biased by elite females with higher sal-T (>102%) who showed larger menstrual changes. Motivation, sal-T reactivity to stress, and the PP responses to a PAP stimulus also varied by testing day (P < .05), in parallel with basal sal-T and in favor of the elite group. Furthermore, stronger within-subject relationships (P < .001) between basal sal-T and motivation emerged in the elites (r = .70-.75) vs the non-elite group (r = .41-.50). In conclusion, menstrual cycle changes in sal-T were more obvious in high-performing female athletes with higher sal-T concentrations. This was accompanied by greater training motivation, a more pronounced sal-T response to a physical stressor and greater neuromuscular power in the elite group. These results support observations that female athletes with higher T are more represented at elite levels of performance.

journal_name

Scand J Med Sci Sports

authors

Cook CJ,Kilduff LP,Crewther BT

doi

10.1111/sms.13041

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

1345-1353

issue

4

eissn

0905-7188

issn

1600-0838

journal_volume

28

pub_type

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