1. Influence of a low-carbohydrate diet on thermoregulatory responses to exercise in women during follicular and luteal phase of the menstrual cycle
- Author
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Ilona Pokora and Grucza, R.
- Subjects
thermoregulation ,lcsh:Biology (General) ,carbohydrate ,Women ,Sweating ,lcsh:Sports medicine ,lcsh:RC1200-1245 ,Exercise ,lcsh:QH301-705.5 ,Menstrual Cycle ,Diet - Abstract
The aim of this study was to examine the effects of a low-carbohydrate diet on thermoregulatory responses to exercise in women during follicular (F) and luteal (L) phase of the menstrual cycle. Ten subjects performed a graded bicycle exercise in a thermoneutral environment (23oC, 52-60% relative humidity). Women were tested after consuming, for 3 days, a control diet (C: 60% carbohydrates, 20% fat, 20% protein) and after that a low-carbohydrate diet (LCHO: 50% fat, 35% protein and 5% carbohydrates), in each phase of the menstrual cycle. Tympanic temperature (Tty), mean skin temperature (Tsk), electrical skin resistance (ESR), oxygen uptake (VO2), heart rate (HR) as well as blood β-hydroxybutyrate acid (β-HB), glucose (Glu) and lactate (LA) concentrations were measured. On the basis of ESR, dynamics of sweating was estimated. No differences in Tty and Tsk were found between the C and LCHO during exercise tests. However, Tty was significantly higher during L than F phase. Delay time for sweating was shorter after LCHO (F: 10.8 vs 9.4 min, P
- Published
- 2003