by Ryan Ketchum
Personal Training Quarterly
June 2017
Vol 4, Issue 3
This article originally appeared in Personal Training Quarterly (PTQ)—a quarterly publication for NSCA Members designed specifically for the personal trainer. Discover easy-to-read, research-based articles that take your training knowledge further with Nutrition, Programming, and Personal Business Development columns in each quarterly, electronic issue. Read more articles from PTQ »
1. Weinberg, RS, and Gould, D. Foundations of Sport and Exercise Psychology. Champaign, IL: Human Kinetics; 1999