In-match physical demands on elite Japanese rugby union players using a global positioning system

Autor: Hayato Yamamoto, Masanori Takemura, Junta Iguchi, Misato Tachibana, Junzo Tsujita, Tatsuya Hojo
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: BMJ Open Sport & Exercise Medicine, Vol 6, Iss 1 (2020)
Druh dokumentu: article
ISSN: 2055-7647
DOI: 10.1136/bmjsem-2019-000659
Popis: ObjectivesOur aim of this study was to quantify the physical demands of elite rugby union players by each position as a step towards designing position-specific training programme using a Global Positioning System/accelerometer system.MethodsThis study was performed as a retrospective observational study. Data were obtained from 45 official matches. The sample size used for the analysis was 298. The per-match total distances, accelerations and impacts were calculated and statistically compared for the forwards and backs and for individual positions.ResultsTotal distances for the forwards and backs were 5731.1±507.8 and 6392.1±646.8 m, respectively. The high-velocity running distances (>18.0 km/hour) covered by the forwards and backs were 317.4±136.9 and 715.0±242.9 m, respectively. The number of accelerations (>1.5 m/s2) for the forwards and backs were 76.3±18.9 and 100.8±19.6 times, respectively, and the number of high impacts (>10 g) were 48.0±46.9 and 35.6±28.3 times for the forwards and backs, respectively. All characteristics were significantly different between the forwards and backs (p
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