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Optimum contact time and the amortization phase in the bounce drop jump

Optimum contact time and the amortization phase in the bounce drop jump

Goss-Sampson, M., Alkureishi, R. and Price, M. (2002) Optimum contact time and the amortization phase in the bounce drop jump. PART I: BIOMECHANICS, Journal of Sports Sciences, 20 (3-74). p. 8. ISSN 0264-0414 (Print), 1466-447X (Online) (doi:10.1080/026404102317126137)

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Abstract

Of the many plyometric techniques available, it has been reported that the bounce drop jump uses the stretch± shortening cycle most effectively (Bobbert et al., 1987: Medicine and Science in Sports and Exercise, 19, 332± 338). Mechanistic theories of the stretch± shortening cycle have been proposed. It is generally agreed that, if the time between the eccentric± concentric contraction is too long, then any possible work enhancement is lost. A wide range of values (0.12± 1.0 m) for optimum drop heights has been reported in the literature. Signi® cant neuromuscular differences between plyometrically trained and untrained athletes suggest that drop jump performance is directly related to training history; this leads to difficulties in in defining an optimum height (Viitasalo et al., 1998: European Journal of Applied Physiology, 78, 432± 440). The aims of this study were to establish whether optimum plyometric training could be based on the landing contact time and to determine its relationship with the muscle amortization phase.

Item Type: Article
Additional Information: Communications to the Annual Conference of the British Association of Sport and Exercise Sciences (BASES) held at University of Wales College, Newport, 4-7 September 2001.
Uncontrolled Keywords: Drop jump
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Life & Sports Sciences
Last Modified: 06 Dec 2016 10:10
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/12429

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