Quantifying Fatigue in the Rugby Codes: The Interplay Between Collision Characteristics and Neuromuscular Performance, Biochemical Measures, and Self-Reported Assessments of Fatigue
Open Access
- 29 October 2021
- journal article
- review article
- Published by Frontiers Media SA in Frontiers in Physiology
Abstract
Locomotor and collision actions that rugby players complete during match-play often lead to substantial fatigue, and in turn, delays in recovery. The methods used to quantify post-match fatigue and recovery can be categorised as subjective and objective, with match-related collision characteristics thought to have a primary role in modulating these recovery measures. The aim of this review was to (1) evaluate how post-match recovery has been quantified in the rugby football codes (i.e., rugby league, rugby union, and rugby sevens), (2) to explore the time-course of commonly used measures of fatigue post-match, and (3) to investigate the relationships between game-related collisions and fatigue metrics. The available evidence suggests that upper-, and lower-body neuromuscular performance are negatively affected, and biomarkers of muscular damage and inflammation increase in the hours and days following match-play, with the largest differences being at 12–36 h post-match. The magnitude of such responses varies within and between neuromuscular performance (Δ ≤ 36%, n = 13 studies) and tissue biomarker (Δ ≤ 585%, n = 18 studies) measures, but nevertheless appears strongly related to collision frequency and intensity. Likewise, the increase in perceived soreness in the hours and days post-match strongly correlate to collision characteristics across the rugby football codes. Within these findings, there are specific differences in positional groups and recovery trajectories between the codes which relate to athlete characteristics, and/or locomotor and collision characteristics. Finally, based on these findings, we offer a conceptual model of fatigue which details the multidimensional latent structure of the load to fatigue relationship contextualised to rugby. Research to date has been limited to univariate associations to explore relationships between collision characteristics and recovery, and multivariate methods are necessary and recommended to account for the latent structures of match-play external load and post-match fatigue constructs. Practitioners should be aware of the typical time windows of fatigue recovery and utilise both subjective and objective metrics to holistically quantify post-match recovery in rugby.This publication has 113 references indexed in Scilit:
- Influence of physical contact on neuromuscular fatigue and markers of muscle damage following small-sided gamesJournal of Science and Medicine in Sport, 2014
- The Relative Efficacy of Three Recovery Modalities After Professional Rugby League MatchesJournal of Strength and Conditioning Research, 2013
- Neuromuscular, biochemical and perceptual post-match fatigue in professional rugby league forwards and backsJournal of Sports Sciences, 2012
- Movement and physiological match demands of elite rugby league using portable global positioning systemsJournal of Sports Sciences, 2011
- The Effects of Recovery Interventions on Consecutive Days of Intermittent Sprint ExerciseJournal of Strength and Conditioning Research, 2009
- The cost of dichotomising continuous variablesBMJ, 2006
- Physiological assessment of aerobic training in soccerJournal of Sports Sciences, 2005
- Assessing Voluntary Muscle Activation with the Twitch Interpolation TechniqueSports Medicine, 2004
- The Utility of Isokinetic Dynamometry in the Assessment of Human Muscle FunctionSports Medicine, 1996
- Hormonal responses to traumaCritical Care Medicine, 1992