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Author Middleton, Laura E. ♦ Wenger, Howard A.
Source SpringerLink
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2005
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health
Subject Keyword Menstrual cycle ♦ Menstrual phase ♦ Intermittent activity ♦ Performance ♦ Game sport ♦ Sports Medicine ♦ Occupational Medicine/Industrial Medicine ♦ Human Physiology
Abstract Game sport and training require repeated high intensity bursts. This study examined differences between high intensity, intermittent work in two phases of the menstrual cycle. Six physically active young women (age 19–29) performed 10 6-s sprints on a cycle ergometer in both the mid-follicular (FP) (days 6–10) and late-luteal phases (LP) (days 20–24) of the menstrual cycle. Work, power, oxygen intake $ {\left( {\dot\.{V}{\text{O}}_{2} } \right)} $ parameters, and capillarized blood lactate were measured. Data are analyzed using the Friedman and Wilcoxon matched pairs tests. There was no difference between menstrual phases in peak 6-s power (6.8(0.6) W kg−1 in FP, 6.9(0.6) W kg−1 in LP), the drop off in work (1.2(3.5) J kg−1 in FP and 1.0(2.7) J kg−1 in LP), or in the sprint $ \dot\.{V}{\text{O}}_{2} $ (23.7 (1.5) mL kg−1 min−1 in LP and 24.3(2.4) mL kg−1 min−1 in FP). Capillarized blood lactate was also similar in both phases of the menstrual cycle both at 1 min (9.2 (2.7) mmol L−1 in FP, 9.2 (3.1) mmol L−1) and at 3 min (9.0 (2.2) mmol L−1 in FP, 9.2 (2.2) mmol L−1 in LP). However, the average 6-s work was greater in the LP (39.3 (3.4) J kg−1) than during the FP (38.3 (3.1) J kg−1) (P=0.023). The recovery $ \dot\.{V}{\text{O}}_{2} $ was also greater in the LP than the FP (26.3 (2.4) mL kg−1 min−1 in LP, 25.0 (2.6) mL kg−1 min−1 in FP, P=0.023). Average work over a series of sprints and the $ \dot\.{V}{\text{O}}_{2} $ consumed between sprints may be slightly greater during the LP than the FP of the menstrual cycle.
ISSN 14396319
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-10-26
Publisher Place Berlin/Heidelberg
e-ISSN 14396327
Journal European Journal of Applied Physiology
Volume Number 96
Issue Number 1
Page Count 6
Starting Page 53
Ending Page 58


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Source: SpringerLink