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Exercise program affects body composition but not weight in postmenopausal women.

Miranda J Velthuis¹, Albertine J Schuit, Petra H M Peeters

¹Comprehensive Cancer Center Middle Netherlands, Utrecht, The Netherlands. mvelthuis@ikmn.nl

Menopause (New York, N.Y.)

|February 4, 2009

Summary

A 12-month exercise program improved body composition in postmenopausal women by reducing body fat and waist circumference, despite no significant weight change. This combined aerobic and strength training offers health benefits.

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Area of Science:

Exercise Physiology
Gerontology
Public Health

Background:

Postmenopausal women often experience changes in body composition.
Sedentary lifestyles contribute to health risks in this demographic.
Maintaining healthy body composition is crucial for long-term health.

Purpose of the Study:

To evaluate the impact of a 12-month combined aerobic and muscle strength training program.
To assess changes in body composition among sedentary, postmenopausal women.
To determine effects on weight, body fat distribution, and lean mass.

Main Methods:

Randomized controlled trial with 189 postmenopausal women (age 50-69).
Intervention group (n=96) performed 12 months of moderate-to-vigorous exercise.
Control group (n=93) maintained usual activity.
Measurements included body weight, BMI, waist/hip circumference, and DXA for body fat/lean mass.

Main Results:

No significant changes in weight, BMI, or hip circumference observed.
Statistically significant reduction in total body fat percentage and absolute amount.
Significant increase in lean mass and decrease in waist circumference.

Conclusions:

Combined aerobic and strength training positively influences postmenopausal women's body composition.
Improvements in body fat distribution and waist circumference have significant health implications.
Encourages increased physical activity for postmenopausal women's health.