by Kyle C. Ryan, PhD, CSCS and Tesla Oldfield
Personal Training Quarterly
January 2012
Vol 1, Issue 1
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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 »