On This Day in Fitness History

By Shirley Archer, JD, MA
Jan 16, 2018

In February 2009, the American College of Sports Medicine, responding to mounting research evidence, updated its 2001 position stand on how much physical activity is needed to lose weight and not regain it.

The 2009 recommendations (which remain current) call for 150–250 minutes per week of moderate-intensity physical activity to prevent weight gain; for weight loss, more than 250 minutes per week is recommended. The ACSM issued its position stand (“Appropriate Physical Activity Intervention Strategies for Weight Loss and Prevention of Weight Regain for Adults”) in Medicine & Science in Sports & Exercise (2009; doi: 10.1249/MSS.0b013e3181949333).


Shirley Archer, JD, MA

Shirley Archer, JD, MA, is the 2008 IDEA Fitness Instructor of the Year and is IDEA's mind-body-spirit spokesperson. She is a certified yoga and Pilates teacher and an award-winning author based in Los Angeles, California, and Zurich, Switzerland. Two of her books, The Walking Deck and The Strength and Toning Deck, are now featured as iPhone apps. Contact her at www.shirleyarcher.com.

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