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The Physiology of Sprint Interval Training

by: Terence Moriarty, MA , Kurt Escobar, MA , Tony Nunez, MS and Len Kravitz, PhD

An original study offers practical applications for HIIT programming.

If your clients haven't already asked you about it, they will. High-intensity interval training is a mainstay in personal training programs and group fitness classes. There are several reasons why HIIT is a good workout, one of them being its brevity. Research indicates that the four most common barriers to exercise are not having time, feeling too tired, getting enough exercise at one's job, and having no motivation to exercise (Brownson et al. 2001).

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IDEA Fitness Journal, Volume 14, Issue 4

© 2017 by IDEA Health & Fitness Inc. All rights reserved. Reproduction without permission is strictly prohibited.

About the Authors

Terence Moriarty, MA

Terence Moriarty, MA IDEA Author/Presenter

Kurt Escobar, MA

Kurt Escobar, MA IDEA Author/Presenter

Tony Nunez, MS

Tony Nunez, MS IDEA Author/Presenter

My name is Tony Nunez and I am a certified personal trainer through the National Strength and Conditioning Association. I have been working in commercial gyms for over 3 years now and recently graduated with my bachelor's of science degree in kinesiology with an emphasis in fitness. Currently, I am instructing older adult group fitness classes, working as the lead personal trainer for the Student Recreation & Wellness Center at CSULB, doing private personal training at people's homes, and recently became a co-owner of a group fitness business - Time 2 Train Long Beach. We specialize in circuit style training for weight loss and muscle endurance. I am a very personable, outgoing individual and I spend my free time with loved ones and performing some type fo physical activity.

Len Kravitz, PhD

Len Kravitz, PhD IDEA Author/Presenter

Len Kravitz, PhD, is the program coordinator of exercise science and a researcher at the University of New Mexico in Albuquerque, where he recently won the Outstanding Teacher of the Year award. Len was also honored as the 2006 Fitness Educator of the Year by the American Council on Exercise.