- Title
- Validity of double and single leg vertical jumps as tests of leg extensor muscle function
- Creator
- Young, Warren; MacDonald, Chris J.; Flowers, Michelle
- Date
- 2001
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/38941
- Identifier
- vital:974
- Identifier
- ISSN:1064-8011
- Abstract
- The purpose of this research was to determine if 5 weeks of resistance training for the shoulder and hip flexor muscles produces improvements in vertical jumping (VJ) performance. Twenty-eight men were assessed on tests of shoulder power, leg extensor muscle function, and VJ performance using jumps performed from a standing position, a 3-stride run-up, and double- and single-leg takeoffs. A shoulder and hip flexor training group (n = 14) improved significantly more than a nontraining control group (n = 12) in shoulder power and 2 VJ performance tests, but not in the tests of leg extensor muscle function. It was concluded that the arm swing and free-leg drive significantly influence VJ performance and, therefore, VJ tests are not valid for assessment of leg extensor muscle function.
- Publisher
- National Strength and Conditioning Association (Human Kinetics)
- Relation
- Journal of Strength and Conditioning Research Vol. 15, no. 1 (2001), p. 6-11
- Rights
- Copyright National Strength and Conditioning Association (Human Kinetics)
- Rights
- This metadata is freely available under a CCO license
- Subject
- 1106 Human Movement and Sports Science; Arm swing; Assessment; Jumps; Muscular power
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