(08-04-16) Effects of dietary protein intake on body composition changes after weight loss in older adults : a systematic review and meta-anal

Effects of dietary protein intake on body composition changes after weight loss in older adults: a systematic review and meta-analysis.
Kim JE1, O'Connor LE1, Sands LP1, Slebodnik MB1, Campbell WW2.


Abstract
CONTEXT:
The impact of dietary protein on body composition changes after older adults purposefully lose weight requires systematic evaluation OBJECTIVE: : This systematic review and meta-analysis assessed the effects of protein intake (<25% vs ≥25% of energy intake or 1.0 g/kg/d) on energy restriction-induced changes in body mass, lean mass, and fat mass in adults older than 50 years.
DATA SOURCES:
PubMed, Cochrane, Scopus, and Google Scholar were searched using the keywords "dietary proteins," "body composition," "skeletal muscle," and "muscle strength."
STUDY SELECTION:
Two researchers independently screened 1542 abstracts.
DATA EXTRACTION:
Information was extracted from 24 articles.
DATA SYNTHESIS:
Twenty randomized control trials met the inclusion criteria.
CONCLUSION:
Older adults retained more lean mass and lost more fat mass during weight loss when consuming higher protein diets.

Fonte: Nutr Rev. 2016 Feb 16. pii: nuv065

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