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A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults

Overview of attention for article published in British Journal of Sports Medicine, July 2017
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • Among the highest-scoring outputs from this source (#14 of 6,121)
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (99th percentile)

Citations

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511 Dimensions

Readers on

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1832 Mendeley
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1 CiteULike
Title
A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults
Published in
British Journal of Sports Medicine, July 2017
DOI 10.1136/bjsports-2017-097608
Pubmed ID
Authors

Robert W Morton, Kevin T Murphy, Sean R McKellar, Brad J Schoenfeld, Menno Henselmans, Eric Helms, Alan A Aragon, Michaela C Devries, Laura Banfield, James W Krieger, Stuart M Phillips

Abstract

We performed a systematic review, meta-analysis and meta-regression to determine if dietary protein supplementation augments resistance exercise training (RET)-induced gains in muscle mass and strength. A systematic search of Medline, Embase, CINAHL and SportDiscus. Only randomised controlled trials with RET ≥6 weeks in duration and dietary protein supplementation. Random-effects meta-analyses and meta-regressions with four a priori determined covariates. Two-phase break point analysis was used to determine the relationship between total protein intake and changes in fat-free mass (FFM). Data from 49 studies with 1863 participants showed that dietary protein supplementation significantly (all p<0.05) increased changes (means (95% CI)) in: strength-one-repetition-maximum (2.49 kg (0.64, 4.33)), FFM (0.30 kg (0.09, 0.52)) and muscle size-muscle fibre cross-sectional area (CSA; 310 µm(2) (51, 570)) and mid-femur CSA (7.2 mm(2) (0.20, 14.30)) during periods of prolonged RET. The impact of protein supplementation on gains in FFM was reduced with increasing age (-0.01 kg (-0.02,-0.00), p=0.002) and was more effective in resistance-trained individuals (0.75 kg (0.09, 1.40), p=0.03). Protein supplementation beyond total protein intakes of 1.62 g/kg/day resulted in no further RET-induced gains in FFM. Dietary protein supplementation significantly enhanced changes in muscle strength and size during prolonged RET in healthy adults. Increasing age reduces and training experience increases the efficacy of protein supplementation during RET. With protein supplementation, protein intakes at amounts greater than ~1.6 g/kg/day do not further contribute RET-induced gains in FFM.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 1,832 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 1832 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 338 18%
Student > Master 322 18%
Researcher 157 9%
Student > Ph. D. Student 133 7%
Other 114 6%
Other 292 16%
Unknown 476 26%
Readers by discipline Count As %
Sports and Recreations 425 23%
Medicine and Dentistry 254 14%
Nursing and Health Professions 241 13%
Agricultural and Biological Sciences 110 6%
Biochemistry, Genetics and Molecular Biology 94 5%
Other 176 10%
Unknown 532 29%

Attention Score in Context

This research output has an Altmetric Attention Score of 2178. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 08 December 2022.
All research outputs
#3,270
of 22,641,687 outputs
Outputs from British Journal of Sports Medicine
#14
of 6,121 outputs
Outputs of similar age
#49
of 311,476 outputs
Outputs of similar age from British Journal of Sports Medicine
#1
of 124 outputs
Altmetric has tracked 22,641,687 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 6,121 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 62.1. This one has done particularly well, scoring higher than 99% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 311,476 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 124 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.