Effect Of Strength Training On Resting Metabolic Rate and Physical Activity: Age and Gender

By Ty Sevin, Sep 01, 2021

< Back to A Variety of Research on the Benefits of Strength Training in Older Adults

Lemmer JT, Ivey FM, Ryan AS, Martel GF, Hurlbut DE, Metter JE, Fozard JL, Fleg JL, Hurley BF. Department of Kinesiology, College of Health and Human Performance, University of Maryland, College Park, MD 20742, USA.

Objectives

The purpose of this study was to compare age and gender effects of strength training on resting metabolic rate (RMR), energy expenditure of physical activity (EEPA) and body composition. Forty healthy sedentary subjects 10 young men (20-30 yr), 9 young women (20-30yr), 11 older men (65-75yr) and 10 older women (65-75yr) completed a 24 week whole body strength training program. To assess changes in RMR, EEPA and body composition 1 RM, DEXA, Vmax 229, physical activity monitoring and the Stanford Seven Day Physical Activity Recall questionnaire were employed before and after the 24 week ST program.

Results

All groups exhibited a significant increase in 1 RM strength for all exercises. When all of the subjects were pooled together there was a 7% increase in absolute RMR in response to strength training. Additionally, ST increased absolute RMR by 7% in both the young (6,302+1,458 vs. 6,719 +1,617 kj ·day-¹) and older (5,614+916 vs. 5,999+973 kj ·day-¹) groups, with no significant interaction between groups. In contrast, gender affected absolute RMR with men showing a 9% increase in absolute RMR while the women did not show any significant increases. When RMR was adjusted for fat-free mass, all subjects pooled together revealed a significant increase in RMR with ST. Again, however, men showed a significant increase in RMR while the women did not. EEPA and total energy expended did not change in response to ST for any group.

Summary

The data revealed that changes in absolute and relative RMR in response to ST are not significantly influenced by age, but they are influenced by gender. In fact, the 7% increase in RMR of all groups when pooled is due largely to the 9% increase in RMR attributed to men only. In addition, the changes in FFM appear similar in both genders. Finally, this study showed that young and older men and women do not show an increase in EEPA outside of the ST sessions. The authors suggest that the difference in RMR between genders may be due to sympathetic nervous system adaptations.

Keiser Equipment Used

Leg Press, Leg Extension, Chest Press, Lat Pulldown, Shoulder Press, Tricep Pushdown, Leg Curl, Upper Back and Abdominal

Published in Medical Science Sports & Exercise, 2001 Apr;33(4):532-41

Link to Original Research

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