文章基本信息

标题：Muscle Glycogen Restoration in Females and Males Following Moderate Intensity Cycling Exercise in Differing Ambient Temperatures
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作者：Michael J. Carper ; Michael J. Carper ; Scott R. Richmond 等
期刊名称：Journal of exercise physiology online
印刷版ISSN：1097-9751
出版年度：2013
卷号：16
期号：4
页码：1-18
语种：English
出版社：American Society of Exercise Physiologists
摘要：Carper MJ, Richmond SR, Whitman SA, Acree LD, Godard MP. Muscle Glycogen Restoration in Females and Males Following Moderate Intensity Cycling Exercise in Differing Ambient Temperatures. JEPonline 2013;16(4):1-18. The purpose of this study was to determine differences in muscle glycogen restoration between males and females following 90 min of cycle ergometry at varying ambient temperatures. A total of 8 females (n=4) and males (n=4) performed a 90 min cycle ergometry trial (70% VO2 max) followed by 8, 1-min sprints (125% VO2 max) at 5°C, 25°C, and 35°C ambient temperature. The subjects were placed in a 20ºC environment and received a carbohydrate supplement (1 g CHO·kg body mass-1 ) at immediate- and 60 min post-exercise. Muscle biopsies were obtained before and at immediate- and 180 min post-exercise for the determination of muscle glycogen. Blood samples were obtained before exercise, every 0.5 hr during exercise, and every 0.5 h for 180 min following exercise for determination of serum glucose, insulin, and free fatty acids. There was a significant difference in muscle glycogen resynthesis between groups following cycling exercise at 5ºC, 25ºC, and 35ºC. Males significantly increased muscle glycogen to near or above baseline levels. There was no significant difference between groups for muscle glycogen immediately post-exercise. The primary finding from this study indicates that males restore significantly more muscle glycogen than females in the 180 min immediately following moderate intensity cycling exercise at 5ºC, 25ºC, and 35ºC.
关键词：Carbohydrate;VO2 max;Metabolism