Influence of ball-in-play time on the activity profiles of rugby league match-play

Gabbett, Tim J (2015) Influence of ball-in-play time on the activity profiles of rugby league match-play. Journal of Strength and Conditioning Research, 29 3: 716-721. doi:10.1519/JSC.0000000000000446


Author Gabbett, Tim J
Title Influence of ball-in-play time on the activity profiles of rugby league match-play
Journal name Journal of Strength and Conditioning Research   Check publisher's open access policy
ISSN 1064-8011
1533-4287
Publication date 2015-03
Year available 2015
Sub-type Article (original research)
DOI 10.1519/JSC.0000000000000446
Volume 29
Issue 3
Start page 716
End page 721
Total pages 6
Place of publication Philadelphia, United States
Publisher Lippincott Williams & Wilkins
Collection year 2016
Language eng
Formatted abstract
Gabbett, TJ. Influence of ball-in-play time on the activity profiles of rugby league match-play. J Strength Cond Res 29(3): 716–721, 2015—Most investigations of the activity profiles of rugby league match-play have reported the physical demands across the entire match irrespective of stoppages in play. This study investigated the activity profiles of rugby league match-play, accounting for time when the ball was “in” and “out-of-play.” One-hundred four players (mean age, 24.0 ± 3.0 years) from 11 semiprofessional rugby league teams underwent global positioning system analysis during 22 matches. Matches were coded for activity and recovery cycles. Time when the ball was continuously in play was considered activity, whereas any stoppages during the match (e.g., for scrums, penalties, line drop-outs, and tries) were considered recovery. The relative distance (125.1 ± 16.1 m·min-1 vs. 86.7 ± 9.8 m·min-1), low-speed activity (115.3 ± 15.7 m·min-1 vs. 81.7 ± 9.8 m·min-1), and high-speed running (9.5 ± 2.9 m·min-1 vs. 5.0 ± 1.8 m·min-1) demands were significantly (p < 0.0001) higher when accounting for ball-in-play time. The frequency of collisions (0.67 ± 0.28 per minute vs. 0.41 ± 0.17 per minute) and repeated high-intensity effort (RHIE) bouts (1 every 6.1 ± 4.7 minutes vs. 1 every 10.7 ± 8.3 minutes) were also higher when stoppage time was excluded. Large negative correlations (p <= 0.001) were found between total ball-in-play time and relative measures of total distance (r = -0.67) and low-speed activity (r = -0.60). These results demonstrate the greater movement, contact, and RHIE demands when rugby league time-motion data are expressed relative to ball-in-play time. Furthermore, the reduction in relative intensity with longer total ball-in-play time suggests that during prolonged passages of play, players adopt a pacing strategy to maintain high-intensity performance and manage fatigue.
Keyword Time-motion analysis
Repeated-effort
Physical demands
Training
Team sports
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Human Movement and Nutrition Sciences Publications
 
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