Model
Digital Document
Publisher
Florida Atlantic University
Description
The purpose of this study was to determine if surgically-induced menopause
in younger women affects substrate utilization during submaximal exercise while
controlling for other potential confounds. METHODS: Thirteen untrained female
subjects (33-50 years old) were recruited: oophorectomized (Group O = 5) and
premenopausal controls (Group C = 8). Two separate visits included: body composition
and maximal treadmill exercise test; followed by substrate utilization via open-circuit
spirometry during 45 minutes of treadmill walking at 50% VO2max. RESULTS: When
controlling for multiple variables affecting whole-body substrate utilization (age, VO2max,
physical activity, body composition, fasting glucose, menstrual phase and diet), there was
no difference in substrate utilization between pre- and postmenopausal women as
measured by respiratory exchange ratio (RER) (0.83 ± 0.04 v 0.84 ± 0.03, p=0.47).
CONCLUSIONS: Menopausal status does not appear to have an effect on substrate
utilization during submaximal exercise in younger women.
in younger women affects substrate utilization during submaximal exercise while
controlling for other potential confounds. METHODS: Thirteen untrained female
subjects (33-50 years old) were recruited: oophorectomized (Group O = 5) and
premenopausal controls (Group C = 8). Two separate visits included: body composition
and maximal treadmill exercise test; followed by substrate utilization via open-circuit
spirometry during 45 minutes of treadmill walking at 50% VO2max. RESULTS: When
controlling for multiple variables affecting whole-body substrate utilization (age, VO2max,
physical activity, body composition, fasting glucose, menstrual phase and diet), there was
no difference in substrate utilization between pre- and postmenopausal women as
measured by respiratory exchange ratio (RER) (0.83 ± 0.04 v 0.84 ± 0.03, p=0.47).
CONCLUSIONS: Menopausal status does not appear to have an effect on substrate
utilization during submaximal exercise in younger women.
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