Effects of Different Exercise Doses on Weight Loss in Postmenopausal Women
Author Information
Author(s): Timothy S. Church, Corby K. Martin, Angela M. Thompson, Conrad P. Earnest, Catherine R. Mikus, Steven N. Blair
Primary Institution: Pennington Biomedical Research Center, Louisiana State University System
Hypothesis
Does varying doses of exercise lead to different levels of weight loss and compensatory responses in sedentary, overweight postmenopausal women?
Conclusion
Higher doses of exercise resulted in less weight loss than predicted, while moderate doses closely matched predicted weight loss.
Supporting Evidence
- Participants in the 4 and 8 KKW groups lost weight as expected, while the 12 KKW group lost less than predicted.
- All exercise groups showed significant reductions in waist circumference.
- Adherence to the exercise program was over 99% across all groups.
Takeaway
When women who don't usually exercise start working out, those who do a lot of exercise might not lose as much weight as expected, but even a little exercise can help them lose weight.
Methodology
Participants were randomized into a control group or one of three exercise groups with different energy expenditures over six months.
Potential Biases
Potential bias in self-reported dietary intake and the specific demographic of participants may limit generalizability.
Limitations
The study was limited to sedentary, overweight or obese, postmenopausal women, which may not apply to other populations.
Participant Demographics
Mean age 57.2 years, BMI 31.7 kg/m2, 63.5% Caucasian.
Statistical Information
P-Value
p<0.05
Confidence Interval
95% CI: 1.9, 5.4 for fitness change
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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