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Supplements that increase the effects of resistance exercise identified

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A more quantitative approach to identifying beneficial nutrients is suggested through meta-analysis of the data. This technique minimizes subjectivity by standardizing selections, data pooling, and data analysis to draw conclusions. This scientific approach has been adopted by a team of researchers to determine whether supplementation of dietary components, above normal intakes or above the requirement, increases lean mass gains associated with resistance training above that of the appropriate control treatment. A secondary objective was to determine whether dietary supplementation during resistance training could augment strength gains.

A New Study

The authors of "Effect of Dietary Supplements on Lean Mass and Strength Gains with Resistance Exercise: A Meta-Analysis" are Steven L. Nissen and Rick L. Sharp, from the Iowa State University, Ames, IA. Dr. Nissen is a professor at Iowa State University, which owns the patents related to HMB. In addition, Dr. Nissen is the Chief Executive Officer (CEO) of Metabolic Technologies, Inc., which is the licensee of the HMB patents. HMB is the subject of part of the meta-analysis. The findings appear in the February 2003 edition of the Journal of Applied Physiology.

Methodology

The researchers defined the term "supplement" as any oral product designed to increase the effects of resistance-training exercise. A list of substances was compiled from the product lists of eight dietary-supplement marketing companies, a review of six magazines targeted specifically at the body-building community, and five published scientific reviews on dietary supplements. The compiled list contained about 250 supplements and was used to search the literature.

The search was confined to clinical trials only. Titles were rejected if they indicated that the study did not involve a dietary supplement, or clearly did not involve any form of resistance exercise, or the subjects suffered from
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Contact: Donna Krupa
djkrupa1@aol.com
703-527-7357
American Physiological Society
18-Mar-2003


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