Relative protein intake and physical function in older adults

A systematic review and meta-analysis of observational studies

Hélio José Coelho-Júnior, Luiz Milano-Teixeira, Bruno Rodrigues, Reury Bacurau, Emanuele Marzetti, Marco Uchida

Research output: Contribution to journalReview article

4 Citations (Scopus)

Abstract

(1) Background: The present work aims to conduct a systematic review and meta-analysis of observational studies, in order to investigate the association of relative protein intake and physical function in older adults; (2) Methods: Observational studies, that investigated the association between protein intake and physical function in older adults, were retrieved from MEDLINE, SCOPUS, CINAHL, AgeLine, EMBASE, and Cochrane-CENTRAL. Two independent researchers conducted study selection and data extraction; (3) Results: Very high protein intake (≥1.2 g/kg/day) and high protein intake (≥1.0 g/kg/day) groups showed better lower limb physical functioning and walking speed (WS) performance, respectively, in comparison to individuals who present relative low protein (<0.80 g/kg/day) intake. On the other hand, relative high protein intake does not seem to propitiate a better performance on isometric handgrip (IHG) and chair rise in comparison to relative low protein intake. In addition, there were no significant differences in the physical functioning of high and middle protein intake groups; (4) Conclusions: In conclusion, findings of the present study indicate that a very high (≥1.2 g/kg/day) and high protein intake (≥1.0 g/kg/day) are associated with better lower-limb physical performance, when compared to low protein (<0.80 g/kg/day) intake, in community-dwelling older adults. These findings act as additional evidence regarding the potential need to increase protein guidelines to above the current recommendations. However, large randomized clinical trials are needed to confirm the addictive effects of high-protein diets (≥1.0 g/kg/day) in comparison to the current recommendations on physical functioning. All data are available in the Open ScienceFramework.

Original languageEnglish
Article number1330
JournalNutrients
Volume10
Issue number9
DOIs
Publication statusPublished - Sep 19 2018

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systematic review
observational studies
protein intake
meta-analysis
Observational Studies
Meta-Analysis
Proteins
randomized clinical trials
proteins
high protein diet
Lower Extremity
walking
Independent Living
researchers
MEDLINE
Randomized Controlled Trials
Research Personnel
Guidelines
Diet

Keywords

  • Physical function
  • Protein intake
  • Sarcopenia

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics

Cite this

Relative protein intake and physical function in older adults : A systematic review and meta-analysis of observational studies. / Coelho-Júnior, Hélio José; Milano-Teixeira, Luiz; Rodrigues, Bruno; Bacurau, Reury; Marzetti, Emanuele; Uchida, Marco.

In: Nutrients, Vol. 10, No. 9, 1330, 19.09.2018.

Research output: Contribution to journalReview article

Coelho-Júnior, Hélio José ; Milano-Teixeira, Luiz ; Rodrigues, Bruno ; Bacurau, Reury ; Marzetti, Emanuele ; Uchida, Marco. / Relative protein intake and physical function in older adults : A systematic review and meta-analysis of observational studies. In: Nutrients. 2018 ; Vol. 10, No. 9.
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abstract = "(1) Background: The present work aims to conduct a systematic review and meta-analysis of observational studies, in order to investigate the association of relative protein intake and physical function in older adults; (2) Methods: Observational studies, that investigated the association between protein intake and physical function in older adults, were retrieved from MEDLINE, SCOPUS, CINAHL, AgeLine, EMBASE, and Cochrane-CENTRAL. Two independent researchers conducted study selection and data extraction; (3) Results: Very high protein intake (≥1.2 g/kg/day) and high protein intake (≥1.0 g/kg/day) groups showed better lower limb physical functioning and walking speed (WS) performance, respectively, in comparison to individuals who present relative low protein (<0.80 g/kg/day) intake. On the other hand, relative high protein intake does not seem to propitiate a better performance on isometric handgrip (IHG) and chair rise in comparison to relative low protein intake. In addition, there were no significant differences in the physical functioning of high and middle protein intake groups; (4) Conclusions: In conclusion, findings of the present study indicate that a very high (≥1.2 g/kg/day) and high protein intake (≥1.0 g/kg/day) are associated with better lower-limb physical performance, when compared to low protein (<0.80 g/kg/day) intake, in community-dwelling older adults. These findings act as additional evidence regarding the potential need to increase protein guidelines to above the current recommendations. However, large randomized clinical trials are needed to confirm the addictive effects of high-protein diets (≥1.0 g/kg/day) in comparison to the current recommendations on physical functioning. All data are available in the Open ScienceFramework.",
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