Trial reportJournal of the International Society of Sports Nutrition2016
Protein intake during training sessions has no effect on performance and recovery during a strenuous training camp for elite cyclists.
Trial report in Journal of the International Society of Sports Nutrition, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 4 of them syntheses that pooled it.
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Who cites it
18 citing papers in PubMed, 4 syntheses or guidelines pooled it, 33 citations in OpenAlex.
- A systematic review of interventions targeting modifiable factors that impact dietary intake in athletes.The British journal of nutrition · 2024Pooled it
- The effect of protein intake on athletic performance: a systematic review and meta-analysis.Frontiers in nutrition · 2024Pooled it
- Effectiveness of whey protein supplements on the serum levels of amino acid, creatinine kinase and myoglobin of athletes: a systematic review and meta-analysis.Systematic reviews · 2019Pooled it
- Efficacy and Safety of Whey Protein Supplements on Vital Sign and Physical Performance Among Athletes: A Network Meta-Analysis.Frontiers in pharmacology · 2019Pooled it
- The Effect of Alginate Encapsulated Plant-Based Carbohydrate and Protein Supplementation on Recovery and Subsequent Performance in Athletes.Nutrients · 2024Trial
- Pre-sleep protein supplementation in professional cyclists during a training camp: a three-arm randomized controlled trial.Journal of the International Society of Sports Nutrition · 2023Trial
- Trial
- Supplement with whey protein hydrolysate in contrast to carbohydrate supports mitochondrial adaptations in trained runners.Journal of the International Society of Sports Nutrition · 2020Trial
- Supplemental Protein during Heavy Cycling Training and Recovery Impacts Skeletal Muscle and Heart Rate Responses but Not Performance.Nutrients · 2016Trial
- Plant-protein supplementation improves thermoregulatory responses and ameliorates markers of intestinal damage during exercise in the heat.Experimental physiology · 2026Article
- Influence of Amino Acids and Exercise on Muscle Protein Turnover, Particularly in Cancer Cachexia.Cancers · 2024Review
- Article
- Regular training has a greater effect on aerobic capacity, fasting blood glucose and blood lipids in obese adolescent males compared to irregular training.Journal of exercise science and fitness · 2021Article
- Carbohydrate supplementation: a critical review of recent innovations.European journal of applied physiology · 2021Review
- Protein Supplementation in Sport: Source, Timing, and Intended Benefits.Current nutrition reports · 2019Review
- Fundamentals of glycogen metabolism for coaches and athletes.Nutrition reviews · 2018Review
- Protein and the Adaptive Response With Endurance Training: Wishful Thinking or a Competitive Edge?Frontiers in physiology · 2018Article
- Whey Protein Improves Marathon-Induced Injury and Exercise Performance in Elite Track Runners.International journal of medical sciences · 2017Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTraining camps for top-class endurance athletes place high physiological demands on the body. Focus on optimizing recovery between training sessions is necessary to minimize the risk of injuries and improve adaptations to the training stimuli. Carbohydrate supplementation during sessions is generally accepted as being beneficial to aid performance and recovery, whereas the effect of protein supplementation and timing is less well understood. We studied the effects of protein ingestion during training sessions on performance and recovery of elite cyclists during a strenuous training camp.
methodsIn a randomized, double-blinded study, 18 elite cyclists consumed either a whey protein hydrolysate-carbohydrate beverage (PRO-CHO, 14 g protein/h and 69 g CHO/h) or an isocaloric carbohydrate beverage (CHO, 84 g/h) during each training session for six days (25-29 h cycling in total). Diet and training were standardized and supervised. The diet was energy balanced and contained 1.7 g protein/kg/day. A 10-s peak power test and a 5-min all-out performance test were conducted before and after the first training session and repeated at day 6 of the camp. Blood and saliva samples were collected in the morning after overnight fasting during the week and analyzed for biochemical markers of muscle damage, stress, and immune function.
resultsIn both groups, 5-min all-out performance was reduced after the first training session and at day 6 compared to before the first training session, with no difference between groups. Peak power in the sprint test did not change significantly between tests or between groups. In addition, changes in markers for muscle damage, stress, and immune function were not significantly influenced by treatment.
conclusionsIntake of protein combined with carbohydrate during cycling at a training camp for top cyclists did not result in marked performance benefits compared to intake of carbohydrates when a recovery drink containing adequate protein and carbohydrate was ingested immediately after each training session in both groups. These findings suggest that the addition of protein to a carbohydrate supplement consumed during exercise does not improve recovery or performance in elite cyclists despite high demands of daily exhaustive sessions during a one-week training camp.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.