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

Jeffreys, Mark, De Ste Croix, Mark B ORCID: 0000-0001-9911-4355, Lloyd, Rhodri S, Oliver, Jon L and Hughes, Jonathan ORCID: 0000-0002-9905-8055 (2019) The effect of varying plyometric volume on stretch-shortening cycle capability in collegiate male rugby players. Journal of Strength and Conditioning Research, 33 (1). pp. 139-145. doi:10.1519/JSC.0000000000001907

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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.

Item Type:	Article
Article Type:	Article
Additional Information:	This is a non-final version of an article published in final form in Jeffreys, Mark, De Ste Croix, Mark B , Lloyd, Rhodri S, Oliver, Jon L and Hughes, Jonathan (2017) The effect of varying plyometric volume on stretch-shortening cycle capability in collegiate male rugby players. Journal of Strength and Conditioning Research, 33 (1). pp. 139-145.
Uncontrolled Keywords:	training, reactive strength, leg stiffness
Subjects:	G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports > GV0711 Coaching G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports > GV861 Ball games: Baseball, football, golf, etc. Q Science > QP Physiology > QP301.H75 Physiology. Sport
Divisions:	Schools and Research Institutes > School of Education and Science
Research Priority Areas:	Health, Life Sciences, Sport and Wellbeing
Depositing User:	Jonathan Hughes
Date Deposited:	04 Apr 2017 11:42
Last Modified:	31 Aug 2023 09:08
URI:	https://eprints.glos.ac.uk/id/eprint/4509

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