Format

Send to

Choose Destination
BMJ Open Sport Exerc Med. 2018 Jan 27;4(1):e000305. doi: 10.1136/bmjsem-2017-000305. eCollection 2018.

Does ovulation affect performance in tennis players?

Author information

1
Laboratory of Exercise Biochemistry, University of Taipei, Taipei, Taiwan.
2
Department of Physical Education, Shih Hsin University, Taipei, Taiwan.
3
School of Sports Science, Wenzhou Medical University, Wenzhou, China.
4
Department of Physical Education, Fu Jen Catholic University, New Taipei City, Taiwan.
5
Department of Kinesiology, Health and Nutrition, University of Texas at San Antonio, San Antonio, Texas, USA.
6
Sports Center, University of Malaya, Kuala Lumpur, Malaysia.
7
Department of Healthcare Administration, Asia University, Taichung, Taiwan.
8
Graduate Institute of Physical Therapy and Rehabilitation Science, China Medical University, Taichung, Taiwan.
#
Contributed equally

Erratum in

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.

KEYWORDS:

elite performance; evidence-based; tennis

Conflict of interest statement

Competing interests: The authors declare that they have no conflict of interest in any aspect.

Supplemental Content

Full text links

Icon for BMJ Publishing Group Icon for PubMed Central
Loading ...
Support Center