Effects of Strength Training On Bone Mineral Density: Hormonal and Bone Turnover Relationships - 2nd Study

By Ty Sevin, Aug 30, 2021

< Back to Benefits of Strength Training on Bone Density in Older Adults

A.S. Ryan, M.S, Treuth, M.A. Rubin, J.P. Miller, B.). Nicklas, D.M. Landis, R.E. Pratley, CR. Libanati, CM. Gundberg, and B.F. Hurley. Departments of Kinesiology and of Human Nutrition and Food Systems, University of Maryland, College Park 20742; Division of Gerontology, University of Maryland School of Medicine and Veterans Affairs Medical Center, Baltimore 21201; Osteoporosis Assessment Center, Wheaton, Maryland 20902; Mineral Metabolism Unit, Veterans Affairs Hospital, Loma Linda University, Loma Linda, California 92357; and Department of Orthopedics and Rehabilitation, Yale University School of Medicine, New Haven, Connecticut 06510.


The effects of a 16-week strength training program on bone mineral density was tested in 21 men aged 51-71 years. Sixteen other similar aged men served as inactive control subjects. Several markers of bone formation and a marker of bone resorption were measured before and after training to assess bone turnover. In addition, to investigate if hormones have underlying effects on bone mineral density, blood levels of 3 hormones were checked before and after training.


The strength training program resulted in an increase in femoral neck bone mineral density but no significant changes in total body or various other site measures of bone mineral density. In addition, there were no significant changes in the hormone variables. There were no changes in any of the measures on the control group.


This study shows that strength training can increase femoral neck bone mineral density. This effect does not appear to be accompanied by changes in anabolic hormones or markers of bone formation and resorption. Increasing bone mineral density has implications for the prevention and control of osteoporosis.

Keiser Equipment Used

Leg press, chest press, leg curl , lat pull down, leg extension, military press, hip adductor, hip abductor, upper back, tricep, lower back, abdominal.

Published in Journal of Applied Physiology, vol. 77, 10.4;1678- 1684, 1994.

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About the author

Ty Sevin

Director of Human Performance, Education and Research

Articles by Ty Sevin >

With over 25 years of coaching experience at both the collegiate and Olympic levels, Ty Sevin is one of the most influential track and field coaches in the country. Ty has worked for the United States Olympic Committee, serving as the Director of the Track and Field Residency Program at the USOC Olympic Training Center in Chula Vista, CA. He has also served as an assistant coach for Team USA on three separate occasions, for both the men’s and women’s teams. Ty himself was a four-time U.S. Olympics Trials qualifier in javelin. Ty most recently spent four years as the Associate Head Coach at the University of Texas at Austin for both the men’s and women’s track and field teams. Prior to that, he led the men’s and women’s track and cross-country teams at the University of New Orleans and McNeese State.

Currently, Ty applies his vast industry experience to the role of Director of Human Performance, Research and Education for Keiser Corporation, where he consults with college and professional sports teams regarding the utilization of Keiser strength equipment. He is also responsible for creating educational curriculum relating to human performance and overseeing Keiser research projects