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Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review
Open accessAbstract
Sufficient protein intake has been shown to be advantageous for developing muscle mass, muscle strength, muscle quality, as well as for improving recovery from strenuous exercise, all of which are essential for athletic performance. Aging athletes, so-called master athletes, would benefit from evidence-based recommendations; however, studies investigating the role of their protein intake on muscle quality or performance are diverse and rare. Consequently, existing recommendations for this subpopulation of aging athletes are non-existent or speculative in nature. The aim of this short scoping review is to summarize available reports, identify common outcomes, and suggest future research directions. Literature research was carried out in PubMedMedline, SPORTDiscuss, and ScienceDirect without any restrictions regarding year of publication, type of research or sports discipline. Only observational and interventional studies with data on protein intake linked with body composition or performance outcomes were included for further analyses. We identified 12 suitable reports on master athletes with very diverse age-ranges, a broad variety of sports, and very heterogeneous outcome parameters. Seven studies investigated endurance athletes, four studies investigated multi-sports athletes, and only one study reported on strength-trained athletes. Average protein intake ranged between 1.0 and 1.9 g/kg/d. Within the few available studies, evidence tends to point towards a benefit of higher protein intakes for muscle mass and function; however, the low number of studies, combined with heterogeneity in study design and methods, limits their generalizability. Future studies are needed to build the evidence base for clear dietary recommendations respecting the specific needs of aging athletes.
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TL;DR
This short scoping review identified 12 studies on protein intake, body composition, and performance in master athletes, with average intakes of 1.0–1.9 g/kg/d across mostly endurance and multi-sport athletes. Evidence tended to favor higher protein intakes for muscle mass and function, but the small number and heterogeneity of studies preclude clear dietary recommendations.
Key findings
- The review included 12 reports with 476 master athletes; ages ranged from 26 to 75 years, with seven endurance studies, four multi-sport studies, and only one strength-trained study. Of 139 participants, only 29% were female master athletes.
- Average protein intake ranged between 1.0 and 1.9 g/kg/d, which the authors describe as at or slightly below recommendations for sports nutrition (1.4–2.0 g/kg/d) or aging populations (1.0–1.5 g/kg/d).
- In 50 elite master athletes, higher protein intake was associated with greater muscle strength and quality (r = 0.36; p = 0.01); in another study, master athletes had higher protein intake than age- and BMI-matched controls (1.5 ± 0.11 vs. 1.2 ± 0.05 g/kg, p < 0.05) and lower body fat (22.1 ± 1.4% vs. 26.4 ± 0.6%, p < 0.05).
- Doubling post-exercise protein intake from 0.3 to 0.6 g/kg did not improve recovery measured by knee extension peak torque or cycling time trial, but it had beneficial effects on subjectively perceived fatigue recovery in master triathletes.
Methods
- This short scoping review followed PRISMA-ScR; literature was searched until 13 January 2025 in PubMed–Medline, SPORTDiscuss/EBSCO, and ScienceDirect/Elsevier, plus ResearchGate and reference-list screening, using search terms (‘master athletes’ OR ‘senior athletes’) AND (‘protein intake’). The database search identified 390 records, with 4 additional records from ResearchGate.
- Included studies were original human observational or interventional studies on master/senior athletes that reported dietary protein intake and body composition or performance outcomes; reviews and meta-analyses were excluded. Twelve studies met the criteria and were summarized narratively in Table 1.
Limitations
- Stated: the 12 studies were very diverse in age ranges (26–75 years), design (eight cross-sectional, three before–after, one crossover), participant numbers (5–176), body composition methods (dual-energy X-ray absorptiometry, hydrodensitometry, bioimpedance, caliper), and dietary assessment (24 h, 3-day, or 7-day food records, dietary recalls, food frequency questionnaire). Female athletes were heavily underrepresented at 29%, and the low number of studies combined with heterogeneity severely limits generalizability; the databases used may not have identified all gray literature.
- Stated: no evidence-based protein intake recommendations exist for master athletes, and inferences are consequently speculative.
- Evident from the text/Table 1: only one included study focused on strength-trained athletes, several studies did not report available protein intake (n.a. in Table 1), and beyond the 1.0–1.9 g/kg/d range, no clear pattern could be observed.
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![Figure 1 PRISMA flow diagram, (CC BY 4.0) (http://creativecommons.org/licenses/by/4.0/, accessed on 12 November 2024) [21].](/paper-figures/8c5b65791744495a9ea1131f76834d33/protein-intake-physical-performance-and-body-composition-in-master-athletesa-figure-1.jpg)
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“Doering et al. [20] reported similar post-exercise protein intakes between older (58 ± 7 years) and younger (24 ± 4 years) triathletes.”
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 3. Results
What the sources say
- Not checked yetcites [20] Tricco, 2018, PRISMA Extension for Scoping Reviews (PRISMA-ScR): Checklist and Explanation, Ann. Intern. Med. source
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In the paper
“Although there are reports summarizing the general dietary habits of master athletes [18] as well as the benefit of higher protein intakes than the current RDA for physical function in the general aging population [19], current literature does not provide sufficient evidence to develop dietary guidelines, specifically for the crucial nutrient protein for aging athletes.”
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 1. Introduction
What the sources say
- Not checked yetcites [18] Guo, S., Shaoni, G.L.L., Stuart-Smith, W.A., Davies, A.J., and Gifford, J.A. (2023). Dietary Intake of Masters Athletes: A Systematic Review. Nutrients, 15. source
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- Not checked yetcites [19] Coelho-Junior, H.J., Calvani, R., Picca, A., Tosato, M., Landi, F., and Marzetti, E. (2022). Protein Intake and Frailty in Older Adults: A Systematic Review and Meta-Analysis of Observational Studies. Nutrients, 14. source
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“Currently, data on protein intake in master athletes is rare; see Table 1.”
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 4. Discussion
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“Based on these criteria, 12 studies were included for further analysis.”
- Also stated in: § 3. Results · plain
“For this short scoping review, we were able to identify 12 reports suitable for further analyses.”
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 2. Materials and Methods
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In the paper
“In 58 master marathon athletes, Methenitis et al. [26] found that a higher protein intake was linked to favorable changes in body composition and metabolic blood biomarkers after a marathon race.”
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 3. Results
What the sources say
- Not checked yetcites [26] Methenitis, 2021, The importance of protein intake in master marathon runners, Nutrition source
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In the paper
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 3. Results
“Of 139 participants, only 29% were female master athletes.”
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 3. Results
“In total, 476 master athletes were part of the 12 studies identified for this short scoping review.”
Rated minor: it would not touch a result — a value no result rests on, a p-value that stays on the same side of the significance level, or a conflict that is clerical, resolved elsewhere in the paper, or outside its own findings.
In the paper
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 3. Results
“Doering et al. [20] reported similar post-exercise protein intakes between older (58 ± 7 years) and younger (24 ± 4 years) triathletes.”
§ Protein Intake, Physical Performance and Body Composition in Master Athletes—A Short Scoping Review > 3. Results
“Doering et al. (2016) [24] | Cross-sectional | Compare typical post-exercise intakes of carbohydrates and protein between masters and younger triathletes”
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KORELASI ASUPAN PROTEIN DAN LATIHAN FISIK TERHADAP PROFIL UREUM - KREATININ MEMBER GYM BEKASI
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Metadata
- Authors
- Franzke, B., Maierhofer, R., & Putz, P.
- Affiliations
- Hochschule Campus Wien (AT)
- Research Center Health Sciences, FH Campus Wien University of Applied Sciences, 1100 Vienna, Austria
- Corresponding author
- Franzke, Bernhard
- Venue
- Nutrients
- Publisher
- MDPI AG
- Published
- 2025-01-29
- Volume
- 17
- Issue
- 3
- Pages
- 498
- ISSN
- 2072-6643 (ISSN-L)
- PMC
- PMC11820402
- OpenAlex
- W4406957625
- Semantic Scholar
- 68bdcf56823481c7ccbfd59cef03acaed23674bc
- Cited by
- 3
- References
- 39
- Citations by year
- 2026: 2 · 2025: 1
- FWCI
- 0.30
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Nutrients (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Nursing › Nutrition and Dietetics › Muscle metabolism and nutrition
- Health Sciences › Medicine › Physiology (medical) › Nutrition and Health in Aging
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
- Keywords
- protein intake, master athletes, older athletes, physical performance, body composition, muscle mass, muscle function, endurance athletes, multi-sport athletes, strength-trained athletes, dietary recommendations, post-exercise recovery
- MeSH terms
- Physical Functional Performance, Aged, Aging, Body Composition, Dietary Proteins, Female, Humans, Male, Middle Aged, Muscle, Skeletal, Muscle Strength, Athletic Performance, Athletes, Sports Nutritional Physiological Phenomena
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