ArticleContributions of Physical Activity to Bone Health Over the LifespanBloomfield, Susan A. PhD, FACSMAuthor Information Department of Health & Kinesiology, Texas A&M University, College Station. Corresponding author: Susan A. Bloomfield, PhD, FACSM, Department of Health & Kinesiology, Texas A&M University, College Station, TX 77845 (e-mail: [email protected]). Dr Bloomfield is an Associate Professor of Kinesiology at Texas A&M and currently serves as Associate Lead for the Bone Team within the National Space Biomedical Research Institute. The author gratefully acknowledges the assistance of Dr Matthew R. Allen in researching an earlier version of this article, and that of Janet Stallone in article preparation. Topics in Geriatric Rehabilitation: January 2005 - Volume 21 - Issue 1 - p 68-76 Buy Abstract Minimizing the human and economic cost of osteoporotic fractures in the American population is an important goal. Regular physical activity can contribute to maximizing peak bone mass early in life and to minimizing age-related bone loss in older adults. Weight-bearing endurance activities at moderately high intensities and resistance training appear to be beneficial, with the largest benefits accruing to individuals with normal reproductive hormone profiles and sufficient dietary calcium intake. More research is required to determine the optimal exercise regimen for children and adults for maximizing bone strength and to test the effectiveness of exercise combined with common medications prescribed for osteoporosis. © 2005 Lippincott Williams & Wilkins, Inc.