Gustavo Becker Delwing

Lower limb force, power and performance in skateboarding: an exploratory study

The purpose of this study was to identify the relationship between the height reached when performing the Ollie maneuver and the muscle force and power of the lower limbs required by beginner level skateboarders. Ten practitioners of Street category, with at least two years experience and who participate in competitions in Beginner, Amateur II or Amateur I categories were submitted to three tests: (1) maximal voluntary contraction of the knee and hip extensor muscles; (2) vertical jump tests, Counter Movement Jump (CJ) and Squat Jump (SJ); and (3) the maximum height achieved during the Ollie maneuver. The results demonstrate that the variance of the Ollie maneuver (p<0.05) is explained by the power estimated with the CJ (76.3%); and the maximal force of the knee extensor muscle (50.6%). These results suggest that the variable power is strongly associated with the performance of the Ollie maneuver.The aim of this study was to quantify the contribution of muscle force and power of the lower limbs to the performance of the Ollie in beginner level skateboarders. Ten male athletes who had practiced for at least two years were submitted to three kinds of test: (1) maximal voluntary contraction of the knee and hip extensor muscles; (2) vertical jump tests, Counter Movement Jump (CMJ) and Squat Jump (SJ); and (3) a test developed specifically for this study, to measure the maximum height achieved during the Ollie manoeuvre. The data obtained were submitted to simple linear regression analysis. The results demonstrate that the variance of the Ollie manoeuvre (p<0.05) is explained by the power estimated with the CMJ (76.3%); and the maximal force of the knee extensor muscle (50.6%). The body mass is the determinant factor to the performance of the Ollie.

Fuerza, potencia y rendimiento de las extremidades inferiores en el skate: un estudio exploratorio

The purpose of this study was to identify the relationship between the height reached when performing the Ollie maneuver and the muscle force and power of the lower limbs required by beginner level skateboarders. Ten practitioners of Street category, with at least two years experience and who participate in competitions in Beginner, Amateur II or Amateur I categories were submitted to three tests: (1) maximal voluntary contraction of the knee and hip extensor muscles; (2) vertical jump tests, Counter Movement Jump (CJ) and Squat Jump (SJ); and (3) the maximum height achieved during the Ollie maneuver. The results demonstrate that the variance of the Ollie maneuver (p<0.05) is explained by the power estimated with the CJ (76.3%); and the maximal force of the knee extensor muscle (50.6%). These results suggest that the variable power is strongly associated with the performance of the Ollie maneuver.The aim of this study was to quantify the contribution of muscle force and power of the lower limbs to the performance of the Ollie in beginner level skateboarders. Ten male athletes who had practiced for at least two years were submitted to three kinds of test: (1) maximal voluntary contraction of the knee and hip extensor muscles; (2) vertical jump tests, Counter Movement Jump (CMJ) and Squat Jump (SJ); and (3) a test developed specifically for this study, to measure the maximum height achieved during the Ollie manoeuvre. The data obtained were submitted to simple linear regression analysis. The results demonstrate that the variance of the Ollie manoeuvre (p<0.05) is explained by the power estimated with the CMJ (76.3%); and the maximal force of the knee extensor muscle (50.6%). The body mass is the determinant factor to the performance of the Ollie.

FORÇA, POTÊNCIA E DESEMPENHO DOS MEMBROS INFERIORES NO SKATE: UM ESTUDO EXPLORATÓRIO

The purpose of this study was to identify the relationship between the height reached when performing the Ollie maneuver and the muscle force and power of the lower limbs required by beginner level skateboarders. Ten practitioners of Street category, with at least two years experience and who participate in competitions in Beginner, Amateur II or Amateur I categories were submitted to three tests: (1) maximal voluntary contraction of the knee and hip extensor muscles; (2) vertical jump tests, Counter Movement Jump (CJ) and Squat Jump (SJ); and (3) the maximum height achieved during the Ollie maneuver. The results demonstrate that the variance of the Ollie maneuver (p<0.05) is explained by the power estimated with the CJ (76.3%); and the maximal force of the knee extensor muscle (50.6%). These results suggest that the variable power is strongly associated with the performance of the Ollie maneuver.The aim of this study was to quantify the contribution of muscle force and power of the lower limbs to the performance of the Ollie in beginner level skateboarders. Ten male athletes who had practiced for at least two years were submitted to three kinds of test: (1) maximal voluntary contraction of the knee and hip extensor muscles; (2) vertical jump tests, Counter Movement Jump (CMJ) and Squat Jump (SJ); and (3) a test developed specifically for this study, to measure the maximum height achieved during the Ollie manoeuvre. The data obtained were submitted to simple linear regression analysis. The results demonstrate that the variance of the Ollie manoeuvre (p<0.05) is explained by the power estimated with the CMJ (76.3%); and the maximal force of the knee extensor muscle (50.6%). The body mass is the determinant factor to the performance of the Ollie.