Abstract：
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.
journal_name
Int J Sports Physiol Performauthors
Johnston RD,Gabbett TJ,Jenkins DGdoi
10.1123/ijspp.2014-0110subject
Has Abstractpub_date
2015-09-01 00:00:00pages
740-5issue
6eissn
1555-0265issn
1555-0273pii
2014-0110journal_volume
10pub_type
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journal_title：International journal of sports physiology and performance
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journal_title：International journal of sports physiology and performance
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journal_title：International journal of sports physiology and performance
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journal_title：International journal of sports physiology and performance
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journal_title：International journal of sports physiology and performance
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pub_type： 杂志文章,随机对照试验
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journal_title：International journal of sports physiology and performance
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
doi：10.1123/ijspp.2017-0792
更新日期：2018-09-01 00:00:00
abstract：PURPOSE:To investigate the influence of prior knowledge of exercise duration on the pacing strategies employed during game-based activities. METHODS:Twelve semiprofessional team-sport athletes (mean ± SD age 22.8 ± 2.1 y) participated in this study. Players performed 3 small-sided games in random order. In one conditi...
journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
doi：10.1123/ijspp.2016-0588
更新日期：2017-11-01 00:00:00
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
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更新日期：2017-03-01 00:00:00
abstract：UNLABELLED:The contractile history of muscle can potentiate electrically evoked force production. A link to voluntary force production, related in part to an increase in reflex excitability, has been suggested. PURPOSE:Our purpose was to quantify the effect of postactivation potentiation on voluntary force production ...
journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
doi：10.1123/ijspp.3.2.219
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journal_title：International journal of sports physiology and performance
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abstract：UNLABELLED:Regular monitoring of adaptation to training is important for optimizing training load and recovery, which is the main factor in successful training. PURPOSE:To investigate the usefulness of a novel submaximal running test (SRT) in field conditions in predicting and tracking changes of endurance performance...
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章,随机对照试验
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
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journal_title：International journal of sports physiology and performance
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
doi：10.1123/ijspp.2014-0355
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章,多中心研究
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更新日期：2019-03-01 00:00:00
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章,随机对照试验
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
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journal_title：International journal of sports physiology and performance
pub_type： 杂志文章
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更新日期：2016-07-01 00:00:00
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pub_type： 杂志文章,评审
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journal_title：International journal of sports physiology and performance
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