Title |
Collision activity during training increases total energy expenditure measured via doubly labelled water
|
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Published in |
European Journal of Applied Physiology, March 2018
|
DOI | 10.1007/s00421-018-3846-7 |
Pubmed ID | |
Authors |
Nessan Costello, Kevin Deighton, Thomas Preston, Jamie Matu, Joshua Rowe, Thomas Sawczuk, Matt Halkier, Dale B. Read, Daniel Weaving, Ben Jones |
Abstract |
Collision 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. Using 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. Collisions 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. A 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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Geographical breakdown
Country | Count | As % |
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United States | 16 | 21% |
Canada | 3 | 4% |
Argentina | 2 | 3% |
Australia | 2 | 3% |
Ireland | 1 | 1% |
Poland | 1 | 1% |
Slovenia | 1 | 1% |
Cameroon | 1 | 1% |
Other | 0 | 0% |
Unknown | 17 | 23% |
Demographic breakdown
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---|---|---|
Members of the public | 34 | 45% |
Practitioners (doctors, other healthcare professionals) | 21 | 28% |
Scientists | 18 | 24% |
Unknown | 2 | 3% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 125 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 21 | 17% |
Student > Bachelor | 15 | 12% |
Student > Master | 14 | 11% |
Student > Postgraduate | 8 | 6% |
Researcher | 6 | 5% |
Other | 17 | 14% |
Unknown | 44 | 35% |
Readers by discipline | Count | As % |
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Medicine and Dentistry | 11 | 9% |
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Biochemistry, Genetics and Molecular Biology | 3 | 2% |
Agricultural and Biological Sciences | 2 | 2% |
Other | 7 | 6% |
Unknown | 48 | 38% |