Document Detail

No Effect of Menstrual Cycle Phase and Oral Contraceptive Use on Endurance Performance in Rowers.
MedLine Citation:
PMID:  21399539     Owner:  NLM     Status:  Publisher    
Vaiksaar, S, Jürimäe, J, Mäestu, J, Purge, P, Kalytka, S, Shakhlina, L, and Jürimäe, T. No effect of menstrual cycle phase and oral contraceptive use on endurance performance in rowers. J Strength Cond Res 25(x): 000-000, 2011-The aim of this study was to examine whether variables commonly used in aerobic exercise testing are influenced by menstrual cycle phases and use of oral contraceptive (OC) in female rowers. Twenty-four eumenorrheic female rowers distinguished on the basis of both menstrual status and athleticism participated in this study and were divided into competitive cyclic athletes (n = 8), recreationally trained cyclic athletes (n = 7), and recreationally trained athletes taking OC pills (ROC; n = 9). Rowers performed 2 incremental tests to voluntary exhaustion on a rowing ergometer during 2 different phases of the menstrual cycle: the follicular phase (FP) and the luteal phase (LP). The study variables were power output (Pa), heart rate (HR), oxygen consumption (&OV0312;O2), carbon dioxide production (&OV0312;CO2), minute ventilation (&OV0312;E), the mean respiratory exchange ratio, and ventilatory equivalents of O2 (&OV0312;E/&OV0312;O2) and CO2 (&OV0312;E/&OV0312;co2), which were measured at maximal and at the aerobic-anaerobic transition intensities. In addition, maximal blood lactate (La) values after the test were obtained. When comparing Pa, &OV0312;o2, HR, and La values, no significant differences (p > 0.05) between FP and LP at maximal load and at threshold intensity were found in all 3 groups of the rowers studied. However, we observed higher values (p < 0.05) for &OV0312;E/&OV0312;CO2 at both intensities in LP compared with FP in the ROC group. In conclusion, sport-specific endurance performance was not influenced by the phase of the normal menstrual cycle and the synthetic menstrual cycle of the OC users in the rowers studied. Therefore, normally menstruating female rowers and female rowers taking OC pills should not be concerned about the timing of their menstrual cycle with regard to optimized sport-specific endurance performance.
Sille Vaiksaar; Jaak Jürimäe; Jarek Mäestu; Priit Purge; Svetlana Kalytka; Larissa Shakhlina; Toivo Jürimäe
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-09
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
1Institute of Sport Pedagogy and Coaching Sciences, Center of Behavioral, Social and Health Sciences, University of Tartu, Tartu, Estonia; and 2National University of Physical Education and Sports of Ukraine, Kiev, Ukraine.
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