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The effect of varying plyometric volume on stretch-shortening cycle capability in collegiate male rugby players

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Author
Jeffreys, M.
De Ste Croix, M.B.A.
Lloyd, Rhodri S.
Oliver, Jon
Hughes, J.
Date
2017-03-25
Acceptance date
2017-03-13
Type
Article
Publisher
Wolters Kluwer
ISSN
1064-8011
1533-4287 (ESSN)
Metadata
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Abstract
The purpose of this study was to identify the effectiveness of low and high volume plyometric loads on developing stretch shortening cycle capability in collegiate rugby players. A between- group repeated measures design was used. Thirty six subjects (age 20.3 ±1.6 yrs, mass 91.63 ±10.36kg, stature 182.03 ±5.24cm) were randomly assigned to one of three groups, a control group (CG), a low volume plyometric group (LPG) or a high volume plyometric group (HPG). Data were collected from a force plate, and measures of reactive strength index (RSI) and leg stiffness were calculated from jump height, contact time and flight time. A significant between group × time (F = 4.01, P <0.05) interaction effect for RSI was observed. Bonferroni post hoc analysis indicated that both the LPG training group (P = 0.002) and HPG training group (P = 0.009) were significantly higher than the control group. No significant interaction effect between time × group were observed for leg stiffness (F = 1.39, P = 0.25). The current study has demonstrated that it is possible to improve reactive strength capabilities via the use of a low volume plyometric program. The low volume program elicited the same performance improvement in RSI as a high volume program whilst undertaking a lower dose. This suggests that strength and conditioning coaches may be able to benefit from the ability to develop more time efficient and effective plyometric programs.
Journal/conference proceeding
Journal of Strength and Conditioning Research;
Citation
Jeffreys, M., De Ste Croix, M.B.A., Lloyd, R.S., Oliver, J.L. and Hughes, J. (2017) 'The effect of varying plyometric volume on stretch-shortening cycle capability in collegiate male rugby players', Journal of Strength & Conditioning Research. doi: 10.1519/JSC.0000000000001907
URI
http://hdl.handle.net/10369/8442
DOI
http://dx.doi.org/10.1519/JSC.0000000000001907
Description
This article was published in Journal of Strength & Conditioning Research on 25 March 2017, (online), available at http://dx.doi.org/10.1519/JSC.0000000000001907
Rights
http://www.rioxx.net/licenses/under-embargo-all-rights-reserved
Sponsorship
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
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