Effect of Resistance Training With Or Without Chromium Picolinate Supplementation On Glucose Metabolism In Older Men And Women

By Ty Sevin, Aug 31, 2021

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Joseph LJ, Farrell PA, Davey SL, Evans WJ, Campbell WW. Noll Physiological Research Center and Graduate Program in Physiology, The Pennsylvania State University, University Park, USA.

Objectives

This study sought to determine whether resistance training (RT) combined with high-dose chromium picolinate (Cr-pic) supplementation would significantly alter glucose metabolism in weight –stable, moderately overweight sedentary older men and women. Thirty two older men and women (62 + 4 yr) completed a 12 week progressive resistance training program; seventeen of these subjects received Cr-pic supplementation, and the remaining subjects received a placebo. Fasting glucose, insulin and C-peptide concentrations were measured through blood samples.

Results

Cr-pic did not significantly effect any measure of glucose metabolism during resistance training. For all 32 subjects combined, fasting glucose increased but there were no significant changes in insulin or C-peptide concentrations after 12 weeks of RT. In response to an oral glucose test, the glucose and C-peptide areas under the curve (AUCs) were unchanged, whereas there was a 19%decrease in the insulin AUC. The decrease in the insulin AUC without any change in insulin secretion, suggests enhanced insulin clearance from the circulation with RT. In addition, changes in glucose, and insulin AUC were highly correlated with baseline glucose, meaning subjects with high baseline readings experienced the greatest changes.

Summary

This research suggests that resistance training decreases the insulin response following an oral glucose challenge in older moderately overweight men and women without affecting glucose tolerance. The data also suggest that the decrease in insulin circulating in the blood stream may result from an increase in insulin clearance from the circulation, not a decrease in insulin secretion. High-dose Cr-pic supplementation does not appear to have an effect on any measure of glucose metabolism during RT. This study does, however, support previous studies showing that resistance training can play a role in diabetes prevention and control.

Keiser Equipment Used

leg extension, leg curl, chest press, double leg press, and arm pull.

Published in Metabolism 1999 May;48(5):546-53

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