Years of training may have a small effect on the strength balance of quadriceps and hamstrings of the preferred leg in professional soccer players.
May modestly influence preferred-leg balance in soccer players; hypothesis-generating and requires longitudinal studies before informing practice.
To investigate the effect of the years of training on the hamstring-quadriceps isokinetic strength and establish normative data for the cardiorespiratory fitness of first and second division Greek male professional soccer players (M=25.1, SD=5.1 yr.) a representative sample of 72 soccer players was chosen randomly from six teams of these divisions. Hamstring-quadriceps ratios of the preferred and nonpreferred leg correlated with years of training weekly (r = .51) in the preferred leg. In conclusion, data indicated that the training background of the players (years of training) might have a small effect on the strength balance of quadriceps and hamstrings of the preferred leg.
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Voutselas et al. (2007) studied this question.
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