Otaka, Machiko and Chen, Shu Man and Zhu, Yong and Tsai, Yung Shen and Tseng, Ching Yu and Fogt, Donovan L and Lim, Boon Hooi and Huang, Chih Yang and Kuo, Chia Hua (2018) Does ovulation affect performance in tennis players? BMJ Open Sport & Exercise Medicine, 4 (1). e000305. ISSN 2055-7647, DOI https://doi.org/10.1136/bmjsem-2017-000305.
Full text not available from this repository.Abstract
Background Scientific data on the performance of collegiate female tennis players during the menstrual phases are scarce. Trial design Double-blind, counter-balanced, crossover trials were conducted to examine whether tennis performance was affected during menstruation, with and without dehydroepiandrosterone sulfate (DHEA-S) supplementation. Methods Ten Division 1 collegiate tennis players (aged 18-22 years) were evenly assigned into placebo-supplemented and DHEA-supplemented (25 mg/day) trials. Treatments were exchanged among the participants after a 28-day washout. Tennis serve performance was assessed on the first day of menstrual bleeding (day 0/28) and on days 7, 14 and 21. Results Mood state was unaltered during the menstrual cycles in both trials. The lowest tennis serve performance score (speed times accuracy) occurred on day 14 (P=0.06 vs day 0; P=0.01 vs day 21) in both placebo and DHEA trials. Decreased performance on day 14 was explained by decreased accuracy (P=0.03 vs day 0/28; P=0.01 vs day 21), but not velocity itself. Isometric hip strength, but not quadriceps strength, was moderately lower on day 14 (P=0.08). Increasing plasma DHEA-S (by ∼65%) during the DHEA-supplemented trial had no effects on mood state, sleep quality or tennis serve performance. Conclusion We have shown that menses does not affect serve performance of collegiate tennis players. However, the observed decrement in the accuracy of serve speed near ovulation warrants further investigation.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | elite performance; evidence-based; tennis |
| Subjects: | G Geography. Anthropology. Recreation > GV Recreation Leisure |
| Divisions: | Faculty of Sports and Exercise Science (formerly known as Centre for Sports & Exercise Sciences) |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 24 Apr 2019 04:46 |
| Last Modified: | 24 Apr 2019 04:46 |
| URI: | http://eprints.um.edu.my/id/eprint/21053 |
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