Influence of physical qualities on post-match fatigue in rugby league players

Johnston, Rich D., Gabbett, Tim J., Jenkins, David G. and Hulin, Billy T. (2014) Influence of physical qualities on post-match fatigue in rugby league players. Journal of Science and Medicine in Sport, 18 2: 209-213. doi:10.1016/j.jsams.2014.01.009


Author Johnston, Rich D.
Gabbett, Tim J.
Jenkins, David G.
Hulin, Billy T.
Title Influence of physical qualities on post-match fatigue in rugby league players
Journal name Journal of Science and Medicine in Sport   Check publisher's open access policy
ISSN 1440-2440
1878-1861
Publication date 2014-02-06
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.jsams.2014.01.009
Volume 18
Issue 2
Start page 209
End page 213
Total pages 5
Place of publication Chatswood, NSW Australia
Publisher Elsevier
Collection year 2015
Language eng
Abstract Objectives: This study examined the influence of physical qualities on markers of fatigue and muscle damage following rugby league match-play. Design: Between subjects design. Methods: Twenty-one male youth rugby league players (age 19.2 ± 0.7 years; height 180.7 ± 5.6 cm; body mass 89.9 ± 10.0 kg) participated in the study. Yo-Yo intermittent recovery test (level 1), 3 repetition maximum back squat and bench press were assessed prior to 2 competitive fixtures. Neuromuscular fatigue (countermovement jump [CMJ] and plyometric push-up [PP]), and blood creatine kinase (CK) were assessed before and after match-play. During match-play, movements were recorded using microtechnology. Players were divided into high- and low-groups based on physical qualities. Results: High Yo-Yo and squat performance resulted in greater loads during match-play (p < 0.05). There were larger reductions in CMJ power in the low Yo-Yo group at both 24 (ES = -1.83), and 48 h post-match (ES = -1.33). Despite greater internal and external match loads, changes in CMJ power were similar between squat groups. There were larger increases in blood CK in the low Yo-Yo group at 24 (73% vs. 176%; ES = 1.50) and 48 h post-match (28% vs. 80%; ES = 1.22). Despite greater contact loads, the high squat group exhibited smaller changes in blood CK post-match (ES = 0.25-0.39). Conclusions: Post-match fatigue is lower in players with well-developed high-intensity running ability, and lower body strength, despite these players having greater internal and external match loads.
Keyword Neuromuscular fatigue
Muscle damage
Yo-yo
Muscular strength
Team sports
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online ahead of print 6 Feb 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
School of Human Movement and Nutrition Sciences Publications
 
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