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Rethinking the Energy Balance: Is a Calorie a Calorie?

by User Not Found | Mar 13, 2013

For immediate release
March 13, 2013

Rethinking the Energy Balance: Is a Calorie a Calorie?

ACSM Summit presentation helps fitness professionals understand factors that impact weight

LAS VEGAS– Why do people lose weight differently while on the same diet and exercise plan?  A session at the American College of Sports Medicine’s 17th annual Health & Fitness Summit & Exposition identifies that numerous biological and behavioral factors impact energy balance and body weight.

“There is much discussion about “good” and “bad” calories and nutrients,” said Melinda Manroe, Ph.D., R.D., C.S.S.D., FACSM. “My presentation puts all of this in context of what factors have the biggest impact on weight and body composition.” Dr. Manroe, a professor of nutrition and exercise sciences at Oregon State University, will present the session “Rethinking the Energy Balance: If a calorie is a calorie, why don’t we lose weight by the books?”

This presentation will help health and fitness professionals who are working with clients who want to change their body weight or body composition understand why they may not be achieving results as expected. Dr. Manroe explains that, while calories count, the old adage of “energy in vs. energy out” oversimplifies the issue -- there are other factors that determine a person’s body size and composition. For example, people who exercise are metabolically different than people who do not exercise.

The presentation will sort weight loss fact from fiction. Dr. Manroe will address the difference between static and dynamic energy balance, the factors that contribute to current weight, how to communicate this to clients, and diet and exercise advice that works.



ACSM’s Health & Fitness Summit & Exposition runs through March 15 in Las Vegas. For more information or to arrange an interview, contact 702-946-2042 Annie Spencer at or Lauren Johnson at

The American College of Sports Medicine is the largest sports medicine and exercise science organization in the world. More than 50,000 international, national and regional members and certified professionals are dedicated to advancing and integrating scientific research to provide educational and practical applications of exercise science and sports medicine. NOTE: Information presented at the Summit represents the professional opinions of the presenters and does not necessarily reflect the official position of the American College of Sports Medicine.

The American College of Sports Medicine supports the 10 Criteria for Responsible Health Reporting as articulated by


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