The Effect of Fast Stretch-Shortening Cycle Plyometric Training on Lower Limb Strength Qualities among Rhythmic Gymnasts

Ng, Phoebe Xiao Yan (2022) The Effect of Fast Stretch-Shortening Cycle Plyometric Training on Lower Limb Strength Qualities among Rhythmic Gymnasts. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

The study aimed to examine the effect of plyometric training that focuses on the Fast Stretch-Shortening Cycle exercise (SSC) on the Reactive Strength Index (RSI) and the transferability of adaptations to Slow SSC capability in pre-teen rhythmic gymnasts. Twenty-two female gymnasts, aged 10.77 ± 1.15 years, were divided into an experimental group (EG, n=11) and a control group (CG, n= 11). Both groups underwent a series of tests such as 10/5 repeated jump and countermovement jump before and after the 6-weeks intervention. All subjects remained in their regular rhythmic gymnastics training during the intervention period and only EG was supplemented with plyometric training. The plyometric training consists of three exercises focused on achieving a ground contact time of less than 0.25s. The volume of foot contact was increased after 3-weeks, from 125 to 200, with a 30s rest between sets and 2 minutes rest between exercises for 2 times per week. Results showed that EG improved significantly on RSI (53.50% ± 46.05%, p < 0.001) and Jump height (JH) (8.33% ± 25%, p = 0.018), but not for CG. Also, significant differences found in RSI (p = 0.015) and JH (p = 0.194) between EG and CG. The study concluded that plyometric training that focuses on Fast SSC implemented for 6 weeks on pre-teen gymnasts improves the RSI and JH, which shows that Fast SSC exercises enhance the reactive strength and suggest that fast SSC adaptations are transferable in slow SSC capability