Efeitos agudos do exercício de vibração de corpo inteiro e da contração voluntária máxima, isolados ou em combinação, na funcionalidade de adolescentes obesos do sexo masculino

Abstract

Obese individuals are reported to have a decrease of musculoskeletal and neuromotor fitness (MSMF). Physical exercise improves components related to MSMF. Whole body vibration exercise (WBVE) is suggested to be an effective type of exercise in various populations, including obese. The aim was to evaluate acute effects of WBVE and maximal voluntary contraction (MVC), alone or in combination, on the functionality of obese adolescents. Obese male adolescents (n=8) were submitted to three different interventions (WBVE, MVC and MVC+WBVE) with a minimum interval of two days between each one. Were evaluated, (i) the cardiopulmonary function throught, of blood pressure (diastolic-DBP, systolic-SBP, and mean arterial pressure-MAP), heart rate (HR), peripheral oxygen saturation (SpO2); (ii) the MSMF throught , handgrip strength (HS), one leg standing balance test(OLSB right and left), sit to reach test (SR), stair climbing test (time-TSCT and power-PSCT) and sit to stand test (time-TSTS and power-PSTS). MVC increased and WBVE decreased the DBP and MAP (p=0.01 and p=0.03 respectively). MVC+WBVE increased HR (p=0.04), this effect being greater than that determined by WBVE (p=0.03). WBVE increased the SR (p=0.03), and no effects were observed with MVC+WBVE and MVC. WBVE decreased the TSCT (p=0.02) and increased the PSCT (p=0.03), while with MVC+WBVE was observed an inverse finding. In conclusion, the acute effects of WBVE alone and in combination with the MVC could promote physiological responses that lead to improvements in the cardiopulmonary and musculoskeletal functions in obese adolescents. The WBVE can be considered as a useful, viable and safe mode of exercise and can been used in the rehabilitation of these obese individuals.