Effect of biological maturation on maximal oxygen uptake and ventilatory thresholds in soccer players: An allometric approach |
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| Authors: | Giovani Cunha Thiago Lorenzi Katiuce Sapata Andre Luiz Lopes Adroaldo Cezar Gaya |
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| Institution: | School of Physical Education, Federal University of Rio Grande do Sul , Porto Alegre, Brazil |
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| Abstract: | Abstract In this study, we investigated the effect of biological maturation on maximal oxygen uptake (Vdot]O2max) and ventilatory thresholds (VT1 and VT2) in 110 young soccer players separated into pubescent and post-pubescent groups.. Maximal oxygen uptake and Vdot]O2 corresponding to VT1 and VT2 were expressed as absolute values, ratio standards, theoretical exponents, and experimentally observed exponents. Absolute Vdot]O2 (ml · min?1) was different between groups for VT1, VT2, and Vdot]O2max. Ratio standards (ml · kg?1 · min?1) were not significantly different between groups for VT1, VT2, and Vdot]O2max. Theoretical exponents (ml · kg?0.67 · min?1 and ml · kg?0.75 · min?1) were not properly adjusted for the body mass effects on VT1, VT2, and Vdot]O2max. When the data were correctly adjusted using experimentally observed exponents, VT1 (ml · kg?0.94 · min?1) and VT2 (ml · kg?0.95 · min?1) were not different between groups. The experimentally observed exponent for Vdot]O2max (ml · kg?0.90 · min?1) was different between groups (P = 0.048); however, this difference could not be attributed to biological maturation. In conclusion, biological maturation had no effect on VT1, VT2 or Vdot]O2max when the effect of body mass was adjusted by experimentally observed exponents. Thus, when evaluating the physiological performance of young soccer players, allometric scaling needs to be taken into account instead of using theoretical approaches. |
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| Keywords: | Soccer children maximal oxygen uptake ventilatory threshold allometry |
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