American Journal of Sports Science and Medicine
ISSN (Print): 2333-4592 ISSN (Online): 2333-4606 Website: http://www.sciepub.com/journal/ajssm Editor-in-chief: Ratko Pavlović
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American Journal of Sports Science and Medicine. 2014, 2(2), 60-64
DOI: 10.12691/ajssm-2-2-1
Open AccessArticle

Age-related Differences in Countermovement Vertical Jump in Soccer Players 8-31 Years Old: the Role of Fat-free Mass

Nikolaidis P.T.1, 2,

1Department of Physical and Cultural Education, Hellenic Army Academy, Athens, Greece

2Exercise Physiology Laboratory, Nikaia, Greece

Pub. Date: February 24, 2014

Cite this paper:
Nikolaidis P.T.. Age-related Differences in Countermovement Vertical Jump in Soccer Players 8-31 Years Old: the Role of Fat-free Mass. American Journal of Sports Science and Medicine. 2014; 2(2):60-64. doi: 10.12691/ajssm-2-2-1

Abstract

The aim of this study was to examine the effect of age on leg muscle power in male soccer players and to provide reference data. Male soccer players, all members of competitive soccer clubs and classified into six age groups (younger than 10 yr, U10, n = 17; U12, n = 27; U14, n = 70; U16, n = 92; U18, n = 33; older than 18 yr, Adults, n=36), participated in our study. They were examined for anthropometric characteristics, body composition, and performed the arm-swing countermovement vertical jump (CVJ) as a measure of leg muscle power. A one-way analysis of variance revealed significant differences between age groups with respect to CVJ (F5,269 = 76.46, p < 0.001, η2 = 0.59). Our findings indicated that the older the age group, the higher the CVJ (e.g., 19.8±3.9 cm in U10, 30.0±5.9 cm in U14 and 41.8±6.0 cm in adult group). This result was in agreement with the significant and large correlation coefficient between age and CVJ (r = 0.68, p < 0.001). Although the cross-sectional design of our study did not allow inferring causal relationship between age and CVJ, it is reasonable to support that there are large gains in leg muscle power with development in soccer players. These gains are accompanied by large increase of FFM during the same period. The findings of this study could be useful for coaches and trainers in the context of talent identification and training optimization.

Keywords:
youth lower limbs muscle power strength football

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