Journal of science and medicine in sport · 2025
Effects of a Fatmax exercise intervention during different menstrual cycle phases on fat metabolism and body composition in normal weight obese women.
СтатьяРандомизированное исследованиеНазвание и аннотация: Перевод пока не подготовлен
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Yang Lumeng, Cao Yahan, Zhang Peizhen
Аннотация
OBJECTIVES: This study aimed to investigate the effects of long-term, individualised exercise at the maximal fat oxidation intensity (Fatmax) during different menstrual cycle phases on lipid metabolism and body composition in women with normal weight obesity.
DESIGN: Randomised controlled trial.
METHODS: A total of 48 women with normal weight obesity (18-30 years) were recruited and randomly assigned to the follicular phase, luteal phase, or control groups. Following baseline testing, all participants completed an 8-week treadmill exercise intervention at individualised Fatmax intensities. The control group exercised four times weekly, whilst the follicular and luteal phase groups completed three additional sessions during the late follicular and mid-luteal phases, respectively. Pre- and post-intervention assessments included body morphology, fasting blood biomarkers, V̇O2max, and Fatmax intensity.
RESULTS: After 8 weeks, both experimental groups showed significant improvements in V̇O2max (p < 0.01) and body composition. The follicular phase group showed greater reductions in body weight, body mass index (p < 0.05), waist and hip circumference, body fat percentage, and fat mass (p < 0.01) than the luteal and control groups. The luteal phase group also showed significant decreases in hip and waist circumference, body fat percentage, and fat mass (p < 0.05), along with an increased apolipoprotein A-I/apolipoprotein B ratio (p < 0.05).
CONCLUSIONS: This study suggests that an 8-week individualised Fatmax exercise intervention is more effective in improving lipid metabolism indicators and body composition during the follicular phase of the menstrual cycle than during the luteal phase.
DESIGN: Randomised controlled trial.
METHODS: A total of 48 women with normal weight obesity (18-30 years) were recruited and randomly assigned to the follicular phase, luteal phase, or control groups. Following baseline testing, all participants completed an 8-week treadmill exercise intervention at individualised Fatmax intensities. The control group exercised four times weekly, whilst the follicular and luteal phase groups completed three additional sessions during the late follicular and mid-luteal phases, respectively. Pre- and post-intervention assessments included body morphology, fasting blood biomarkers, V̇O2max, and Fatmax intensity.
RESULTS: After 8 weeks, both experimental groups showed significant improvements in V̇O2max (p < 0.01) and body composition. The follicular phase group showed greater reductions in body weight, body mass index (p < 0.05), waist and hip circumference, body fat percentage, and fat mass (p < 0.01) than the luteal and control groups. The luteal phase group also showed significant decreases in hip and waist circumference, body fat percentage, and fat mass (p < 0.05), along with an increased apolipoprotein A-I/apolipoprotein B ratio (p < 0.05).
CONCLUSIONS: This study suggests that an 8-week individualised Fatmax exercise intervention is more effective in improving lipid metabolism indicators and body composition during the follicular phase of the menstrual cycle than during the luteal phase.