Analise eletromiográfica e dinamométrica durante o ciclio da pedalada em cicloergômetro aquático
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Data
2011-06-30
Autores
Ribeiro, Maria Auxiliadora Andrade Pinto [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
No ciclismo aquático os músculos dos membros inferiores são responsáveis pela produção da força, a qual, aplicada sobre o pedal e transmitida ao pé-de-vela, impulsiona a bicicleta aquática. Estudos das forças aplicadas sobre o pedal são de grande interesse para a Biomecânica do ciclismo, especialmente quando estas se encontram associadas à técnica da eletromiografia. Os objetivos deste estudo foram: (1) construir um pedal com o eixo instrumentado com extensômetros para medir a Força Normal média aplicada sobre o pedal da bicicleta aquática; (2) Verificar a magnitude dos sinais eletromiográficos dos músculos do membro inferior direito, reto femoral (RF), bíceps femoral (BF) e gastrocnêmio lateral (GAL) na fase de propulsão do ciclo da pedalada; (3) Verificar a existência de correlação entre a intensidade do sinal eletromiográfico e os da Força Normal média aplicada sobre o pedal nos três níveis de controle de fluxo de água presentes na Hidrocycle. Participaram deste estudo 5 voluntários do sexo masculino, com idade média 22 ± 1,9, massa corporal 75 kg ± 3,8, estatura 176 cm ± 3,3. Os ensaios procederam em um tanque de dimensões externas 1,2 m x 1,0 m x 1,5 m, respectivamente, comprimento, largura e altura, partes laterais de vidro, no qual a Hidrocycle foi instalada. Os voluntários pedalaram a uma frequência de 50 rpm, por um período de 1 minuto, nos três níveis de resistência aquática pré-estabelecida pela Hidrocycle. Com a aplicação crescente das cargas devido à abertura ou fechamento dos dois furos presentes em cada uma das quatro calhas da bicicleta foram obtidos os resultados. O músculo GAL apresentou aumento estatisticamente significativo dos RMSm para os dois furos abertos (2FA) (17,00 mV ± 2,44), um furo fechado (1FF) (19,50 mV ± 1,80) e dois furos fechados (2FF) (34,40 mV ± 8,24). Para o músculo RF também foi observado aumento...
At the aquatics cycling the muscles of the lower limbs are responsible for the force production which, applied make the aquatics bicycle move ahead. Studies of the forces applied on the pedal are of great interest for the cycling Biomechanics, especially when these are associated with the EMG technique. The aims of this study were: (1) to build a instrumental pedal with strain gauges to measure average normal force applied on the aquatics bicycle pedal; (2) to check amount of EMG signals of the muscles of the right lower limb, RF muscle, BF muscle and GAL muscle and phase of the propulsion of the pedal ride; (3) to check the correlation existing between the EMG signal intensity pedal force at the three levels of water resistance. Five male volunteers with average age 22 ± 1,9, body weight 75 kg ± 3, 8, 176 cm ± 3,3 height participated on this experiments. The experiments happened at a tank with external dimensions of 1,2 m x 1,0m x 1,5 m, length, width and height, glass side walls, in with the Hidrocycle was installed. The volunteers cycled at a frequency of 50 rpm, for one minutes, during the three levels of aquatic resistance previously established by the Hidrocycle. With the rising use of loads due to the opining and closing process of the two holes present in each of the four gutters of the bicycle, the results were obtained. The muscle GAL presented significant RMSm increase related to the two open holes levels (2FA) (17,00 mV± 2,44), one close holes (1FF) (19,50 mV± 1,80) and two close holes (2FF) (34,40 mV± 8,24). For the muscle RF, a significant RMSm increase was also found: 2FA (14,40 mV± 5,08), 1FF (17,70 mV± 3,36) and 2FF (20,00 ± 15,21). The muscle BF hasn’t presented any significant increase for 1FF (30, 00 mV± 12,58), put to FA ( 25,80 ± 18,57) and 2FF (34,40 ± 20,46) slowed significant RMSm increase for p<0,05. Concerning the correlation between RMSm... (Complete abstract click electronic access below)
At the aquatics cycling the muscles of the lower limbs are responsible for the force production which, applied make the aquatics bicycle move ahead. Studies of the forces applied on the pedal are of great interest for the cycling Biomechanics, especially when these are associated with the EMG technique. The aims of this study were: (1) to build a instrumental pedal with strain gauges to measure average normal force applied on the aquatics bicycle pedal; (2) to check amount of EMG signals of the muscles of the right lower limb, RF muscle, BF muscle and GAL muscle and phase of the propulsion of the pedal ride; (3) to check the correlation existing between the EMG signal intensity pedal force at the three levels of water resistance. Five male volunteers with average age 22 ± 1,9, body weight 75 kg ± 3, 8, 176 cm ± 3,3 height participated on this experiments. The experiments happened at a tank with external dimensions of 1,2 m x 1,0m x 1,5 m, length, width and height, glass side walls, in with the Hidrocycle was installed. The volunteers cycled at a frequency of 50 rpm, for one minutes, during the three levels of aquatic resistance previously established by the Hidrocycle. With the rising use of loads due to the opining and closing process of the two holes present in each of the four gutters of the bicycle, the results were obtained. The muscle GAL presented significant RMSm increase related to the two open holes levels (2FA) (17,00 mV± 2,44), one close holes (1FF) (19,50 mV± 1,80) and two close holes (2FF) (34,40 mV± 8,24). For the muscle RF, a significant RMSm increase was also found: 2FA (14,40 mV± 5,08), 1FF (17,70 mV± 3,36) and 2FF (20,00 ± 15,21). The muscle BF hasn’t presented any significant increase for 1FF (30, 00 mV± 12,58), put to FA ( 25,80 ± 18,57) and 2FF (34,40 ± 20,46) slowed significant RMSm increase for p<0,05. Concerning the correlation between RMSm... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Biomecânica, Eletromiografia, Electromyography
Como citar
RIBEIRO, Maria Auxiliadora Andrade Pinto. Analise eletromiográfica e dinamométrica durante o ciclio da pedalada em cicloergômetro aquático. 2011. 109 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Engenharia de Guaratinguetá, 2011.