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No effect of menopausal status on energy cost and substrate oxidation during walking in women with similar body composition and movement behaviors
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DOI：10.1016/j.physbeh.2026.115262.png)
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Abstract
En 中文
The purpose of the study was to compare the energy metabolism responses at different walking speeds among pre, peri and postmenopausal women, with consideration for individual's body composition characteristics and movement behaviors. Twenty-one premenopausal women (38.9 +/- 5.0 years), twenty-two perimenopausal women (49.5 +/- 3.8 years) and twenty-one postmenopausal women (55.4 +/- 4.1 years) were included in the data analysis. Body composition (fat mass (FM) and fat-free mass (FFM)) was assessed by dual-energy X-ray absorptiometry and movement behaviors by accelerometry. Fasting blood samples were collected to determine pituitary and ovarian hormones concentrations. Energy cost of walking (gross and net Cw), expressed both in absolute terms and relative to FFM, as well as substrate oxidation rates, was measured by indirect calorimetry during five 5-minute treadmill walking bouts at 2, 3, 4, 5, and 6 km.h-1, each separated by 3 min of seated rest. Results indicate that there were no significant differences in body composition, movement behaviors, and in Cw and substrate oxidation rates during walking among the three groups. Negative correlations were found between moderate-to-vigorous physical activity and both gross and net Cw relative to FFM at 5 km center dot h-1 and 6 km center dot h-1 (from p = 0.04 to p = 0.007). No correlations were found between estradiol concentration and Cw or substrate oxidation rates, at any walking speed. Women experiencing the menopausal transition do not exhibit differences in energy metabolism during walking compared with pre and postmenopausal women when they have a similar body composition and movement behaviors.
Keywords:
Menopausal status
Walking economy
Substrate use
Metabolic flexibility
Women
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