Changes in short-term power output in 10 to 12 year olds.

De Ste Croix, Mark B ORCID: 0000-0001-9911-4355, Armstrong, N, Chia, M Y and Welsman, J R (2001) Changes in short-term power output in 10 to 12 year olds. Journal of Sports Sciences, 19 (2). pp. 141-148. doi:10.1080/026404101300036352

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In this study, we used multi‐level regression modelling to assess the influence of age, sex, body size, skinfold thicknesses, maturity, thigh muscle volume and isokinetic leg strength on the development of load- and inertia‐adjusted peak (1 s) and mean power (30 s) determined using the Wingate anaerobic test. Fifteen males and 19 females were measured twice, first aged 10.0±45 0.3 years and then aged 11.8 ± 0.3 years. Initial models identified body mass and height as significant explanatory variables ( P < 0.05) for peak power and mean power, with an additional age effect for the former. No significant differences between the sexes or maturity effects were observed for either peak or mean power ( P > 0.05). The introduction of sum of skinfolds improved the fit of the model and rendered the height term non‐significant for both peak and mean power ( P > 0.05). An age effect became apparent for mean power. When isokinetic leg strength and thigh muscle volume were entered into the model, the latter exerted a significant effect on both peak and mean power ( P < 0.05), whereas isokinetic leg strength was not a significant explanatory variable for either ( P > 0.05). In conclusion, thigh muscle volume exerts a positive influence on young people's short‐term power output, which is additional to the effects of body mass, sum of skinfolds and age.

Item Type: Article
Article Type: Article
Uncontrolled Keywords: Children; sokinetic Leg Strength; Multi-LEVEL Modelling; Thigh Muscle Volume; Wingate Anaerobic Test
Divisions: Schools and Research Institutes > School of Education and Science
Depositing User: Anne Pengelly
Date Deposited: 06 Mar 2014 11:03
Last Modified: 31 Aug 2023 09:11

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