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Nutr Rev. 2016 Mar;74(3):210-24. doi: 10.1093/nutrit/nuv065. Epub 2016 Feb 16.

Effects of dietary protein intake on body composition changes after weight loss in older adults: a systematic review and meta-analysis.

Author information

1
J.E. Kim, L.E. O'Connor, and W.W. Campbell are with the Department of Nutrition Science, Purdue University, West Lafayette, Indiana, USA. L.P. Sands is with the Department of Human Development, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. M.B. Slebodnik is with the Arizona Health Sciences Library, University of Arizona, Tuscon, USA.
2
J.E. Kim, L.E. O'Connor, and W.W. Campbell are with the Department of Nutrition Science, Purdue University, West Lafayette, Indiana, USA. L.P. Sands is with the Department of Human Development, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA. M.B. Slebodnik is with the Arizona Health Sciences Library, University of Arizona, Tuscon, USA. campbellw@purdue.edu.

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.

KEYWORDS:

aging; body composition; obesity; protein

PMID:
26883880
PMCID:
PMC4892287
[Available on 2017-03-01]
DOI:
10.1093/nutrit/nuv065
[Indexed for MEDLINE]
Free PMC Article

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