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Advisor(s)
Abstract(s)
Este estudo tem como objetivo fazer a caraterização biofísica de um atleta de elite em cadeira de
rodas, numa prova de velocidade de 100m, com ênfase em fatores biomecânicos. O atleta
participante é do sexo masculino, compete na categoria T52 e é detentor do recorde nacional dos
100m. Foram realizados 4 sprints, com capacete e rodas abertas, com capacete e rodas fechadas,
sem capacete e rodas abertas, bem como sem capacete e rodas fechadas. A análise cinemática foi
realizada com o software Kinovea e a análise estatística com recurso ao SPSS. Foi registado
menor arrasto e menor resistência de rolamento quando foi utilizado capacete (capacete
aerodinâmico de estrada) no sprint com capacete e rodas abertas (D - 7,01±4,21N e RR -
4,81±0,04N). Os dados obtidos indicam que sem capacete e rodas fechadas teve o maior arrasto
(9,45±5,43N), resistência de rolamento (4,85±0,05N) e potência total (365,75±287,22W). Os
melhores tempos acumulados foram conseguidos nos sprints com capacete e rodas fechadas e
com capacete e rodas abertas, 22’’15 e 22’’70, respetivamente. Relativamente aos diferentes
tipos de rodas utilizadas, não parece que tenha havido uma influência significava entre elas,
tendo em conta o sprint de 100 metros.
This study aims to perform the biophysical characterization of an elite athlete in a wheelchair, in a 100m speed test, with an emphasis on biomechanical factors. The participating athlete is male, competes in the category T52 and holds the national 100m record. For this, 4 sprints were carried out: with helmet and open wheels, with helmet and closed wheels, without helmet and open wheels, as well as without helmet and closed wheels. Kinematic analysis was performed using Kinovea software and statistical analysis was carried out using SPSS. Lower drag and lower rolling resistance were noted when a helmet (aerodynamic road helmet) was used in the sprint with openwheels (D - 7.01±4.21N and RR - 4.81±0.04N). The data obtained indicates that without helmet and closed wheels had the highest drag (9.45±5.43N), rolling resistance (4.85±0.05N) and total power (365.75±287.22W). The best accumulated times were achieved in the sprints with a helmet and closed-wheels and with helmet and openwheel helmet, 22’’15 and 22’’70, respectively. Regarding the different types of wheels used, it does not seem that there was a significant influence between them, considering the 100 meter sprint.
This study aims to perform the biophysical characterization of an elite athlete in a wheelchair, in a 100m speed test, with an emphasis on biomechanical factors. The participating athlete is male, competes in the category T52 and holds the national 100m record. For this, 4 sprints were carried out: with helmet and open wheels, with helmet and closed wheels, without helmet and open wheels, as well as without helmet and closed wheels. Kinematic analysis was performed using Kinovea software and statistical analysis was carried out using SPSS. Lower drag and lower rolling resistance were noted when a helmet (aerodynamic road helmet) was used in the sprint with openwheels (D - 7.01±4.21N and RR - 4.81±0.04N). The data obtained indicates that without helmet and closed wheels had the highest drag (9.45±5.43N), rolling resistance (4.85±0.05N) and total power (365.75±287.22W). The best accumulated times were achieved in the sprints with a helmet and closed-wheels and with helmet and openwheel helmet, 22’’15 and 22’’70, respectively. Regarding the different types of wheels used, it does not seem that there was a significant influence between them, considering the 100 meter sprint.
Description
Keywords
Atlestismo Adaptado Biomecânica Cinemática Prova Velocidade T52