Identifying Contextual Influences on Training Load: An Example in Professional Rugby Union

Nicholas E. Dalton-Barron; Shaun J. McLaren; Christopher J. Black; Michael Gray; Ben L. Jones; Gregory Roe

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Identifying Contextual Influences on Training Load: An Example in Professional Rugby Union

Nicholas E. Dalton-Barron ^[1] ; Shaun J. McLaren ^[2] ; Christopher J. Black ^[3] ; Michael Gray ; Ben L. Jones ; Gregory Roe
1. [1] Leeds Beckett University
  
  Leeds Beckett University
  
  Reino Unido
2. [2] Teesside University
  
  Teesside University
  
  GB.ENG.I5.00EF019, Reino Unido
3. [3] Rugby Football League, Red Hall, Leeds, United Kingdom
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Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 35, Nº. 2, 2021, págs. 503-511
Idioma: inglés
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Resumen
- We aimed to investigate the contextual factors influencing training load (TL), as determined by session rating of perceived exertion (sRPE-TL), accumulated within a match-to-match microcycle in rugby union players. Session rating of perceived exertion-TL data were collected daily from 35 professional rugby union players from the same team in the English Championship over the course of an in-season period. Players were split by positional groups (backs and forwards) and sRPE-TL data were categorized as: field-based on-feet sRPE-TL (sRPEField-TL), gym-based sRPE-TL (sRPEGym-TL), and the total summation of both (sRPETotal-TL). Three 2-level linear mixed models were built for each dependent variable in each positional group, with magnitude-based inferences applied. Long between-match recovery cycles (>=7 days) resulted in very likely to almost certainly small to moderate increases in sRPE-TL for all modalities and positions (fixed effect [mean range] = 28.5%-42.0%), apart from sRPEField-TL for forwards. For backs, there was a very likely small decrease in sRPEField-TL as the season progressed (-16.7% per trimester). Losing the last league match was associated with very likely and almost certainly small decreases in sRPETotal-TL and sRPEGym-TL for backs (-20.7% and -36.4%, respectively). Losing the last match in any competition resulted in a very likely small increase in sRPEField-TL (21.2%) and a possibly small decrease sRPEGym-TL (-18.5%) for backs-with a likely smaller sRPEGym-TL for forwards (-33.4%). The strength of the upcoming opposition had no effect on sRPE-TL. Our findings highlight some of the multifactorial contextual factors that must be considered when planning and evaluating training microcycles.