Gabbett, Tim J. (2015) Use of relative speed zones increases the high-speed running performed in team sport match play. Journal of Strength and Conditioning Research, 29 (12). pp. 3353-3359. ISSN 1064-8011
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.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Published version cannot be displayed due to copyright restrictions. |
| Faculty / Department / School: | No Faculty |
| Date Deposited: | 25 May 2017 23:32 |
| Last Modified: | 25 May 2017 23:32 |
| Uncontrolled Keywords: | activity profiles; physical demands; relative stress; rugby league; time-motion analysis; adolescent; age factors; athletic performance; cross-sectional studies; football; geographic information systems; humans; male; running; time and motion studies |
| Fields of Research : | 11 Medical and Health Sciences > 1106 Human Movement and Sports Science > 110699 Human Movement and Sports Science not elsewhere classified |
| Socio-Economic Objective: | C Society > 92 Health > 9299 Other Health > 929999 Health not elsewhere classified |
| Identification Number or DOI: | 10.1519/JSC.0000000000001016 |
| URI: | http://eprints.usq.edu.au/id/eprint/32272 |
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