Key result
Over a 14-month period, preschool children demonstrated significant improvements in rebound jumping and 20-meter running velocity, with the rate of change in jumping ability significantly correlating with running development.
Observational (n=37)
No
Mean Difference: 0.68
Absolute Event Rate: 4.1% vs 3.43%
p-value: p=<0.001
Rebound jumping ability correlates with running ability development in preschool children, suggesting jumping exercises may improve running skills.
Rebound jumping correlates with running gains in preschoolers; hypothesis-generating for interventions, needs prospective confirmation.
AbstractThis study investigated the process of longitudinal development of rebound jumping (RJ) and running ability in preschool children over a period of one year.The subjects included 24 boys (4 years) and 13 girls (4 years).The measurements used for this purpose were the counter movement jumping (CMJ) height, the consecutive RJ index (jump height and ground contact time), and the veloci- ty during a 20 m run.The main results obtained were as follows:1) The CMJ height, RJ index, RJ jump height, and velocity during the 20 m run were signiˆcantly higher in 2013 when compared with the values for 2012.In addition, the RJ contact time was signiˆcantly shorter in 2013 than in 2012.2) The rates of change in CMJ ability, RJ ability, and the 20 m run velocity did not correlate sig-niˆcantly with the rate of change in body height.The rate of change in RJ ability was correlated signiˆcantly only with the rate of change in the 20 m run velocity.These results suggest that RJ ability aŠects the development of running ability.In addition, exercises similar to RJ can potentially lead to eŠective longitudinal development of running ability.
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Sakaguchi et al. (2014) conducted an observational in Healthy motor development (n=37). Longitudinal development (14 months) vs. Baseline (4 years of age) was evaluated on 20 m running velocity (boys) (MD 0.68, p=<0.001). Over a 14-month period, preschool children demonstrated significant improvements in rebound jumping and 20-meter running velocity, with the rate of change in jumping ability significantly correlating with running development.
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