Influence of number of contact efforts on running performance during game-based activities

Purpose: To determine the influence the number of contact efforts during a single bout has on running intensity during game-based activities and assess relationships between physical qualities and distances covered in each game. Methods: Eighteen semiprofessional rugby league players (age 23.6 ± 2.8 y) competed in 3 off-side small-sided games (2 × 10-min halves) with a contact bout performed every 2 min. The rules of each game were identical except for the number of contact efforts performed in each bout. Players performed 1, 2, or 3 × 5-s wrestles in the single-, double-, and triple-contact game, respectively. The movement demands (including distance covered and intensity of exercise) in each game were monitored using global positioning system units. Bench-press and back-squat 1-repetition maximum and the 30–15 Intermittent Fitness Test (30–15IFT) assessed muscle strength and high-intensity-running ability, respectively. Results: There was little change in distance covered during the single-contact game (ES = –0.16 to –0.61), whereas there were larger reductions in the double- (ES = –0.52 to –0.81) and triple-contact (ES = –0.50 to –1.15) games. Significant relationships (P < .05) were observed between 30–15IFT and high-speed running during the single- (r = .72) and double- (r = .75), but not triple-contact (r = .20) game. Conclusions: There is little change in running intensity when only single contacts are performed each bout; however, when multiple contacts are performed, greater reductions in running intensity result. In addition, high-intensity-running ability is only associated with running performance when contact demands are low.
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Subjects: rugby fatigue load intensity
Notations: sport games
Tagging: Körperkontakt Kontaktsportart Tackling Pacing
DOI: 10.1123/ijspp.2014-0110
Published in: International Journal of Sports Physiology and Performance
Published: 2015
Volume: 10
Issue: 6
Pages: 740-745
Document types: article
Language: English
Level: advanced