Athletes: performance and recovery
Summary
Athletic performance depends on total energy, protein, carbohydrate availability, and training—not animal foods specifically. Vegan athletes may need higher total protein targets and attention to leucine-rich sources and meal timing, but performance is compatible with vegan diets.
Supported by 6 cited sources
Key Points
- 1A 2023 systematic review and meta-analysis found no overall difference in combined physical-performance outcomes between plant-based and omnivorous diets, although few studies were eligible (Damasceno et al., 2023).
- 2In a 12-week resistance-training study, protein-matched vegan and omnivorous groups gained similar muscle mass and strength when both consumed about 1.6 g protein/kg/day (Hevia-Larraín et al., 2021).
- 3Plant-based patterns can provide carbohydrate for glycogen availability, and protein targets can be met with legumes, soy foods, other protein-rich plants, and supplements when desired or needed (Rogerson, 2017).
- 4Athletic performance and recovery depend on adequate energy, carbohydrate, protein, fluid, micronutrient intake, and training context rather than on a requirement for animal foods specifically (Thomas et al., 2016; Rogerson, 2017).
Evidence Summary
Evidence quality
The overall evidence is moderate (Thomas et al., 2016; Rogerson, 2017; Damasceno et al., 2023). General sports-nutrition principles are supported by professional consensus, but direct studies of vegan athletes are relatively few, often small, and heterogeneous in sport, training status, duration, and dietary definition (Thomas et al., 2016; Rogerson, 2017; Damasceno et al., 2023). The available evidence does not identify animal protein as necessary for performance, but it also does not establish a vegan diet as inherently performance-enhancing (Damasceno et al., 2023).
Performance outcomes
A 2023 systematic review and meta-analysis included four studies of aerobic performance and six of strength or power (Damasceno et al., 2023). Across the combined outcomes, performance was unchanged among participants adopting plant-based diets compared with controls; the review reported a standardized effect estimate of 0.01 with a 95% confidence interval from -0.21 to 0.22 (Damasceno et al., 2023). The small number of eligible studies limits certainty, particularly for elite athletes and long-term outcomes (Damasceno et al., 2023).
A controlled 12-week resistance-training study compared 19 habitual vegan men with 19 omnivorous men (Hevia-Larraín et al., 2021). Protein intake was adjusted to approximately 1.6 g/kg/day using soy isolate for the vegan group and whey for the omnivorous group (Hevia-Larraín et al., 2021). Both groups increased leg lean mass, muscle cross-sectional area, muscle-fiber area, and leg-press strength, with no statistically significant between-group differences (Hevia-Larraín et al., 2021). This supports compatibility with strength and hypertrophy under the study conditions, but the participants were untrained young men and the diets included protein supplements (Hevia-Larraín et al., 2021).
Fuel and recovery
Sports-nutrition guidance emphasizes matching energy and macronutrient intake to training load, competition demands, and recovery needs (Thomas et al., 2016). Carbohydrate availability supports high-quality training and replenishment of glycogen, while protein amount, distribution, and amino-acid composition contribute to repair and adaptation (Thomas et al., 2016). These requirements are not tied to one food category (Thomas et al., 2016).
A review focused on vegan athletes concluded that adequate carbohydrate is generally achievable from grains, legumes, fruits, and starchy vegetables (Rogerson, 2017). It also identified soy foods, legumes, grains, nuts, seeds, and plant-protein powders as options for meeting protein and essential-amino-acid needs (Rogerson, 2017). Because many plant proteins have lower digestibility or lower concentrations of particular essential amino acids than some animal proteins, the review advised attention to total protein, food variety, and leucine-rich servings; supplements were described as an optional tool where whole-food intake is difficult or inconvenient (Rogerson, 2017).
Cardiometabolic context
The existing stub states that plant-based patterns can support glycogen availability and cardiometabolic health (Rogerson, 2017). The carbohydrate component is directly relevant to sports fueling, while proposed cardiometabolic advantages are drawn mainly from research outside athlete-performance trials; athlete-specific outcome data remain limited (Rogerson, 2017). Accordingly, cardiometabolic findings should not be treated as proof of faster recovery or better competition performance (Rogerson, 2017; Damasceno et al., 2023).
The evidence base is larger for omnivorous athletes, and recommendations for vegan athletes often extrapolate from general sports nutrition or studies of individual plant proteins (Rogerson, 2017). The resistance-training study involved 38 untrained young men, protein matching, and soy supplementation, so its results do not establish equivalence for every sport, population, protein intake, or unsupplemented diet (Hevia-Larraín et al., 2021). The performance meta-analysis included few studies and combined vegetarian and vegan patterns in some analyses, limiting vegan-specific conclusions (Damasceno et al., 2023).
Supporting Evidence
The Bottom Line
Current evidence is compatible with athletes maintaining performance, recovery, and resistance-training adaptations on a planned vegan diet; animal protein has not been shown to be uniquely required (Hevia-Larraín et al., 2021; Damasceno et al., 2023). Adequate total energy, carbohydrate, protein, and micronutrient provision remains necessary, and the direct evidence in elite vegan athletes is limited (Thomas et al., 2016; Rogerson, 2017).
Practical Takeaways
Match energy and carbohydrate intake to training volume and competition demands, and distribute protein-containing meals across the day (Thomas et al., 2016). Use varied protein sources such as legumes, soy foods, grains, nuts, and seeds; plant-protein supplements can be used when meeting intake through food is impractical (Rogerson, 2017). Athlete-specific planning should account for sport, body-composition goals, gastrointestinal tolerance, and training phase (Thomas et al., 2016).
Sources & Evidence
6 sources cited across 6 claims
Athletic performance is compatible with vegan diets
GuidelineVegan athletes should focus on leucine-rich foods
Expert ConsensusGeneral sports-nutrition principles concerning energy, carbohydrate, protein, fluid...
GuidelinePractical construction of vegan athletic diets, including carbohydrate availability...
ObservationalProtein-matched comparison of vegan and omnivorous diets during 12 weeks of supervised...
ObservationalMeta-analysis of aerobic and strength or power outcomes under plant-based versus...
Meta-Analysis