Abstract:
:This study investigated the activity profiles of junior rugby league players competing in 3 distinct age groups (Under 13, 14, and 15), and 2 distinct playing standards (division 1 and 4). In addition, we reported global positioning system (GPS) data using predefined absolute speed thresholds and speed thresholds expressed relative to a players' individual peak velocity. Ninety male junior rugby league players, representing 1 of 6 teams competing in the Brisbane junior rugby league competition, underwent measurements of peak velocity (through a 40-m sprint) and GPS analysis during competitive matches. Data were described as both absolute speed zones and relative to the individual player's peak velocity. Absolute measures of moderate-, high-, and very high-speed running distances increased with age with the differences among groups typically small to moderate (effect size = 0.24-0.68) in magnitude. However, when data were expressed relative to a players' capacity, younger players and those from lower playing divisions exhibited higher playing intensities and performed greater amounts of high-intensity activity. Moderate and negative relationships (r = -0.43 to -0.46) were found between peak velocity and the amount of relative high-speed running performed. These findings suggest that individualization of velocity bands increases the high-speed running attributed to slower players and decreases the high-speed running attributed to faster players. From a practical perspective, consideration should be given to both the absolute and relative demands of competition to provide insight into training prescription and the recovery requirements of individual players.
journal_name
J Strength Cond Resjournal_title
Journal of strength and conditioning researchauthors
Gabbett TJdoi
10.1519/JSC.0000000000001016subject
Has Abstractpub_date
2015-12-01 00:00:00pages
3353-9issue
12eissn
1064-8011issn
1533-4287journal_volume
29pub_type
杂志文章abstract::Ball, S, Halaki, M, and Orr, R. Movement demands of rugby sevens in men and women: A systematic review and meta-analysis. J Strength Cond Res 33(12): 3475-3490, 2019-Global positioning systems (GPS) provide comprehensive information of player movement demands in rugby 7's. Although studies have investigated the use of...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,meta分析
doi:10.1519/JSC.0000000000003197
更新日期:2019-12-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2020-12-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,随机对照试验
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更新日期:2009-08-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2017-12-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2020-07-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2013-07-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0b013e3182503807
更新日期:2013-01-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2020-06-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2016-05-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2014-08-01 00:00:00
abstract::The objective of this investigation was to determine whether short-term heavy resistance training (RT) in healthy older men could eliminate deficits in muscle mass and strength (ST) compared with healthy younger men. Seventeen older men (60-71 yr) performed supervised RT for 22 weeks. Before and after RT, measurements...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
doi:10.1519/JSC.0b013e3181bf43c8
更新日期:2011-02-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2011-10-01 00:00:00
abstract::The purpose of this study was to determine the effect of football equipment and running surface on sprint performance in NCAA Division II football players (n = 68). Players were timed in the 40-yd sprint on an indoor rubberized track (Day 1) and on an outdoor, natural-grass football field (Day 2) wearing either regula...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,随机对照试验
doi:10.1519/R-16934.1
更新日期:2005-11-01 00:00:00
abstract::This investigation compared supramaximal oxygen uptake interval training with continuous training in collegiate, national, and international class rowers. It was hypothesized that 6 supramaximal intensity sessions over 11 days would increase power on selected power measures. After 8 weeks of training for a new season,...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章,随机对照试验
doi:10.1519/JSC.0000000000001274
更新日期:2016-06-01 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2019-12-05 00:00:00
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journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2019-09-01 00:00:00
abstract::It is generally thought that topical cooling can interfere with blood perfusion and may have positive effects on recovery from a traumatic challenge. This study examined the influence of topical cooling on muscle damage markers and hemodynamic changes during recovery from eccentric exercise. Eleven male subjects (age ...
journal_title:Journal of strength and conditioning research
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doi:10.1519/JSC.0b013e318267a22c
更新日期:2013-05-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2009-12-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2014-01-01 00:00:00
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更新日期:2013-03-01 00:00:00
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abstract::This study evaluated the influence of cadence on the Young Men's Christian Association (YMCA) bench press test for predicting 1 repetition maximum (1RM) bench press test performance. Fifty-eight medical students (37 men, 21 women) were evaluated for anthropometric variables (age, height, weight, fat-free mass, and per...
journal_title:Journal of strength and conditioning research
pub_type: 杂志文章
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更新日期:2002-08-01 00:00:00
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更新日期:2012-09-01 00:00:00
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journal_title:Journal of strength and conditioning research
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更新日期:2016-07-01 00:00:00
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更新日期:2012-02-01 00:00:00