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Advantages and restrictions of body bioelectrical impedance analysis method for estimation of overweight reasons in soccer players (0.44 Mb, pdf) Read
Authors:
Понтага Инесе
Жиденс Янис
Annotation:

The aim of the present investigation is to prove that an increased body mass index (BMI) in soccer players does not always give evidence about overweight or obesity, but may appear due to skeletal muscles hypertrophy, which does not worsen the players’ strength and speed characteristics. Twenty nine male well trained soccer players participated voluntary in the investigation. The anthropometrical characteristics and the body mass composition are measured by the bioelectrical impedance analysis method using the Body Composition Analyzer. Vertical jumps heights are measured on a special platform. The significant correlations are determined between the BMI and the lean body mass (LM) (r=0.36, p<0.05) and between the BMI and the body fat content in % (BF) (r=0.54, p<0.003) in the soccer players. This proves that high BMI can be caused by growth of the BF and by skeletal muscles hypertrophy. The mean BMI value was in norm in soccer players (23.4 ± 1.4 kg/m2). The correlations between the BMI or the LM and the height of vertical jumps (squat jump- SJ and counter-movement jump- CMJ) were none significant (p>0.05). This proves that the vertical jumps height is not possible to predict from the value of the BMI. Additional lean body mass due to skeletal muscles hypertrophy does not worsen height of vertical jumps. Relationships between the BF and jumps height were significant negative linear (for SJ: r= -0.48, p<0.013, for CMJ: r= -0.50, p<0.013). This means that increase of the BF is a reason of the decrease of vertical jump height in soccer players.

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