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New meta-analysis builds on the power of whey protein for improved body composition
Date:4/15/2014

erences from baseline to trial end). Studies were classified into two distinct groupsWP as a supplement without dietary modification (WPS) and WP as a replacement for other sources of calories (WPR)and were meta-analyzed separately. Subgroup analyses included examining the effect of resistance exercise and type of WP on the relationship between WP and body composition.

Results: Fourteen RCTs were included, with a total of 626 adult study completers. Five studies examined the effects of WPR whereas the remaining nine studies examined the effects of WPS. Body weight (WGMD: -4.20kg, 95% CI: -7.67, -0.73) and body fat (WGMD: -3.74kg, 95% CI: -19 5.98, -1.50) were significantly decreased from baseline in the WPR within-group analyses. In the between-group analyses, the effects of WP were more favorable when compared with carbohydrates than protein sources other than whey, although findings did not reach statistical significance. Results from the subgroup analyses indicated a statistically significant increase in LBM (WGMD: 2.24 kg, 95% CI: 0.66, 3.81) among studies that included a resistance exercise component along with WP provision.

Conclusions: The current body of literature supports the use of WP, either as a supplement combined with resistance exercise or as part of a weight-loss or weight-maintenance diet, to improve body composition parameters.


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Contact: Sheila Weiss
sweiss@foodminds.com
202-664-4717
Whey Protein Research Consortium
Source:Eurekalert

Page: 1 2 3

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