Chromium Picolinate Supplementation and Resistive Training by Older Men: Effects on Iron-status and Hematological Indexes 1-3

By Ty Sevin, Aug 31, 2021

< Back to Benefits of Strength Training on Chromium Supplementation in Older Adults

Wayne W. Campbell, John L. Beard, Lyndon I, Joseph, Stephanie L. Davey, and William J. Evans; Donald W. Reynolds Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR; Noll Physiological Research Center and the Department of Nutrition, Pennsylvania State University, University Park, PA.

Objectives

High dose chromium supplementation has been thought to adversely affect iron levels in the body. This study examined the effects of chromium supplementation on a wide variety of blood indexes and indexes of iron status in 18 men aged 56-69 years who participated in a strength training program. Randomly, 9 men were assigned to a chromium supplement group and 9 men were assigned to a placebo group. Two times per week they each strength trained on 5 Keiser machines, performing 3 sets of 8-12 repetitions at 80% of their one repetition maximum.

Results

Strength training decreased total-iron-binding capacity and increased transferrin saturation. Chromium supplementation did not influence these results. The indexes of iron status were unchanged. In this study high-dose chromium supplementation for 12 weeks did not influence a wide range of blood related indexes or indexes of iron metabolism or status in older men.

Summary

These data showed that strength training by older men changed some indexes of iron but did not result in changes in a wide range of blood indexes. There were some changes suggested in iron transport, but these changes were not significantly affected by chromium supplementation. Chromium supplementation at the level used in this study, does not appear to compromise iron status or predispose the subjects to iron deficiency anemia.

Keiser Equipment Used

Leg extension, leg curl, leg press, chest press, upper back machines.

Published in American Journal of Clinical Nutrition, 3897-2, p. 945, October, 1997.

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