Journal of Applied Physiology, Vol 80, Issue 1 226-232, Copyright © 1996 by American Physiological Society

ARTICLES

Effect of past gymnastics participation on adult bone mass

E. M. Kirchner, R. D. Lewis and P. J. O'Connor
Department of Foods and Nutrition, University of Georgia, Athens 30602-3622, USA.

The purposes of this study were to determine bone mineral density (BMD) of former female college gymnasts (FG; n = 18) and controls (FC; n = 15) by using dual-energy X-ray absorptiometry (Hologic QDR 1000W) and to examine the relationships between current and former activity levels, diet, menstrual history and BMD. Current physical activity, dietary intake, and menstrual irregularity were assessed with the use of standardized questionnaires. A study-designed questionnaire was used to assess past physical activity. The BMDs of the FG were significantly higher (P < 0.001) than the BMDs of FC for the lumbar spine, femoral neck, Ward's triangle, and whole body, even when the influences of current and past physical activity levels were statistically controlled via analysis of covariance. FG and FC did not differ in nutrient intakes, and there were no BMD differences between FG who always had regular menstrual cycles vs. those who had an interruption (> or = 3 mo) of their menstrual cycle in the past. The higher BMD in FG compared with FC suggests that past participation in college gymnastics may provide a residual effect on adult BMD.

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