- Title
- Relationship between absolute and relative power with linear and change-of-direction speed in junior American football players from Australia
- Creator
- Lockie, Robert G.; Jeffriess, Matthew D.; Schultz, Adrian B.; Callaghan, Samuel J.
- Relation
- Journal of Australian Strength and Conditioning Vol. 20, Issue 4, p. 4-12
- Publisher
- Australian Strength and Conditioning Association
- Resource Type
- journal article
- Date
- 2012
- Description
- Speed and power, in particular relative power, are important qualities for American football players. Little research has investigated the interaction between these qualities in junior players. This study investigated the relationship between speed, absolute, and relative power, as measured by typical football tests, in National-level junior Australian players. 23 males (age: 16.6 ± 0.7 years; mass: 84.1 ± 21.9 kilograms [kg]; height: 1.80 ± 0.07 metres [m]) completed the: 36.58-m sprint; pro-agility shuttle; three-cone drill; vertical jump (VJ); standing broad jump (SBJ); and backwards overhead medicine ball throw (BOMBT). The power tests (VJ, SBJ, BOMBT) were recorded as absolute heights and distances, and examined relative to body mass. Correlation analyses determined significant (p £ 0.05) relationships between the speed (36.58-m sprint, pro-agility shuttle, three-cone drill), and power tests. Stepwise multiple regression analyses (p £ 0.05) were also conducted for each speed test. Absolute and relative VJ (r = -0.466-- 0.626) and SBJ (r = -0.549--0.784) correlated with all speed tests. Greater jump heights and distances were associated with faster times. SBJ also predicted pro-agility shuttle performance (R2 = 0.831, p < 0.001). Absolute BOMBT distance did not correlate with any speed test (r = -0.064--0.191). The BOMBT complexity, and the subject body mass range (63.3-148.2 kg), likely contributed to these results. When BOMBT distance was considered relative to body mass, correlations were established with the speed tests (r = -0.640--0.760). Relative BOMBT also predicted performance in all speed tests (R2 = 0.640-0.831, p < 0.001). The VJ and SBJ measure sport-specific power in junior American football players. The BOMBT also measures power specific to football players when made relative to body mass.
- Subject
- leg power; change-of-direction speed; high school athletes; field testing; agility; medicine ball throw
- Identifier
- http://hdl.handle.net/1959.13/1328090
- Identifier
- uon:25819
- Identifier
- ISSN:1835-7644
- Language
- eng
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