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Bone Density Loss in Athletes, A Scientific Study
The ODS is co-sponsoring a study with the National Institute of Arthritis and
Musculoskeletal and Skin Diseases to examine the hypothesis that inadequate calcium intake
combined with substantial losses of calcium through sweat can contribute to bone loss in people
participating in intensive exercise. Researchers at the University of Memphis are testing the
effectiveness of calcium supplements in reducing short-term changes in bone density in male and
female high school athletes. Previous studies of young, male basketball players have shown
actual decreases in bone density over the course of an intense training and playing season, an
observation that could have far-reaching implications for exercise in the general population.
Starting date: 1996.
Publication from this study:
• Eck, L.H., Klesges, R.C., Ward, K.D., Shelton, M.L., Slawson, D.L., Cantler, E.D. and
Vukadinovich, C.M. Sources of calcium intake in a sample of African-American and Euro-
American collegiate athletes. J. Nutr. Ed. (in press).
• Kaufman, E.M. and Klesges, R.C. (1998). Does gaining weight prevent osteoporosis? An
evaluation of the relationship between body fat, muscle mass, and bone density. Ann. Behav.
Med. 20:S204.
• Peterson, B.A., Klesges, R.C., Kaufman, E.M., Cooper, T.V. and Vukadinovich, C.M.
(1998). Calcium intake and bone content in young women. Ann. Behav. Med. 20:S213.
• Ward, K.D., Klesges, R.C., McClanahan, B., Harmon-Clayton, K., Fallone, G., Cantler, E.,
Palmieri, G.M.A. and Applegate, W.B. (1997). Are extremely physically active people at risk
for decreases in bone mineral density? A large-scale prospective investigation. Ann. Behav.
Med. 19:S112.
• Klesges, R.C., Ward, K.D., Palmieri, G.M.A., Applegate, W.B., Cantler, E.D. and Harmon-
Clayton, K. (1996). Risk of exercise induced bone mineral loss in different team sports. J.
Bone Min. Res. 11(suppl 1):654.
PAST ACCOMPLISHMENTS
Dietary Supplements for Physically Active People, A Workshop
The ODS initiated a major two-day workshop on the NIH campus to present a state-ofthe-art
scientific review of dietary supplements that may enhance the overall health of people
who actively engage in exercise or recreational sports. The workshop was sponsored in
conjunction with the American Institute of Nutrition and the American Society for Clinical
Nutrition and was co-sponsored by eleven of the NIH ICs. The proceedings of the workshop,
“The Role of Dietary Supplements for Physically Active People,” were reviewed and edited by
ODS and will be published as a supplement to the American Journal of Clinical Nutrition. A
formal bibliography was prepared for this workshop in conjunction with the National Library of
Medicine and is available through the Current Bibliographies in Medicine series. This
bibliography and the scientific abstracts from this workshop are available through the ODS
Internet home page (http://dietary-supplements.info.nih.gov). Workshop held: June 3-4, 1996,
Bethesda, MD.
Publications from this workshop:
• Marriott, B.M. and Kanter, M., eds. (1998) The role of dietary supplements for physically
active people. Am. J. Clin. Nutr. (in press)
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