Trial reportEuropean journal of applied physiology2018
Collision activity during training increases total energy expenditure measured via doubly labelled water.
Trial report in European journal of applied physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
18 citing papers in PubMed, 1 synthesis or guideline pooled it.
- A systematic review: Role of dietary supplements on markers of exercise-associated gut damage and permeability.PloS one · 2022Pooled it
- Beyond the Hit: Muscle and Vascular Tissue Responses to Contact Exposure in Collision Sports-A Narrative Review.Sports medicine (Auckland, N.Z.) · 2025Review
- An Audit of Sport Nutrition Services Within Male and Female International Rugby Union: Implications for Research and Practice.European journal of sport science · 2025Article
- Review
- Daily energy expenditure and water turnover in female netball players from the Netball Super League: A doubly labeled water observation study.European journal of sport science · 2024Observational
- When to Pull the Trigger: Conceptual Considerations for Approximating Head Acceleration Events Using Instrumented Mouthguards.Sports medicine (Auckland, N.Z.) · 2024Review
- The Development of a Resting Metabolic Rate Prediction Equation for Professional Male Rugby Union Players.Nutrients · 2024Article
- Article
- Total energy expenditure of collision team sports players measured using doubly labeled water: a systematic review.Physical activity and nutrition · 2023Article
- A novel application of entropy analysis for assessing changes in movement variability during cumulative tackles in young elite rugby league players.Biology of sport · 2023Article
- Dietary Intakes of Elite Male Professional Rugby Union Players in Catered and Non-Catered Environments.International journal of environmental research and public health · 2022Article
- The effect of rugby training on indirect markers of gut permeability and gut damage in academy level rugby players.European journal of applied physiology · 2022Article
- "Fuel for the Damage Induced": Untargeted Metabolomics in Elite Rugby Union Match Play.Metabolites · 2021Article
- Competition Nutrition Practices of Elite Male Professional Rugby Union Players.International journal of environmental research and public health · 2021Article
- Quantifying Fatigue in the Rugby Codes: The Interplay Between Collision Characteristics and Neuromuscular Performance, Biochemical Measures, and Self-Reported Assessments of Fatigue.Frontiers in physiology · 2021Review
- Returning to Play after Prolonged Training Restrictions in Professional Collision Sports.International journal of sports medicine · 2020Review
- There Is Little Difference in the Peak Movement Demands of Professional and Semi-Professional Rugby League Competition.Frontiers in physiology · 2019Article
- Impact-Induced Muscle Damage: Performance Implications in Response to a Novel Collision Simulator and Associated Timeline of Recovery.Journal of sports science & medicine · 2018Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeCollision sports are characterised by frequent high-intensity collisions that induce substantial muscle damage, potentially increasing the energetic cost of recovery. Therefore, this study investigated the energetic cost of collision-based activity for the first time across any sport.
methodsUsing a randomised crossover design, six professional young male rugby league players completed two different 5-day pre-season training microcycles. Players completed either a collision (COLL; 20 competitive one-on-one collisions) or non-collision (nCOLL; matched for kinematic demands, excluding collisions) training session on the first day of each microcycle, exactly 7 days apart. All remaining training sessions were matched and did not involve any collision-based activity. Total energy expenditure was measured using doubly labelled water, the literature gold standard.
resultsCollisions resulted in a very likely higher (4.96 ± 0.97 MJ; ES = 0.30 ± 0.07; p = 0.0021) total energy expenditure across the 5-day COLL training microcycle (95.07 ± 16.66 MJ) compared with the nCOLL training microcycle (90.34 ± 16.97 MJ). The COLL training session also resulted in a very likely higher (200 ± 102 AU; ES = 1.43 ± 0.74; p = 0.007) session rating of perceived exertion and a very likely greater (- 14.6 ± 3.3%; ES = - 1.60 ± 0.51; p = 0.002) decrease in wellbeing 24 h later.
conclusionsA single collision training session considerably increased total energy expenditure. This may explain the large energy expenditures of collision-sport athletes, which appear to exceed kinematic training and match demands. These findings suggest fuelling professional collision-sport athletes appropriately for the "muscle damage caused" alongside the kinematic "work required".
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