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King Grub
2012-04-17, 10:58
A basic question for many athletic coaches pertains to the maximum attainable strength level for youth athletes. The aim of this investigation was to establish reference values for the strength performance in the front and back squat in youth athletes. The strength performance in front and back squat of 141 elite youth soccer players was tested by a One-Repetition-Maximum (1RM) and 1RM related to bodyweight (SREL). The subjects were between 11 and 19 years old and were divided into two groups and four subgroups (A = under 19-years-old, B = under 17-years-old, C = under 15-years-old, D = under 13-years-old). For approximately two years, one group (CG) only participated in routine soccer training, and the other group (STG) participated in an additional strength-training program along with the routine soccer training. Additionally, the strength performance in a 5RM in both squat variants of 105 young elite weightlifters (BWG) was examined to show the high level of trainability of children and adolescents and to determine the reference strength values for young athletes. The STG reached SREL in the parallel front squat in subgroup A 1.50.2, in B 1.40.2, in C 1.20.2, in D 0.70.2 and SREL in parallel back squat in subgroup A 1.70.2, in B 1.60.2, in C 1.40.2 and in D 0.90.3. STG had significantly (p<0.001) higher strength values in 1RM and SREL than CG. BWG had higher strength values than STG, but the BWG was not part of the statistical analysis due to the different test protocols (1RM vs. 5RM). Our data show that the SREL in parallel squat for young elite athletes with long-term training experience should be a minimum of 2.0 for 16- to 19-year-olds, 1.5 for 13- to 15-year-olds and 0.7 for the 11- to 12-year-olds.

J Strength Cond Res. 2012 Apr 10. Trainability of Adolescents and Children in the Back and Front Squat.

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