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Objetivo: analisar as respostas térmicas dos músculos da coxa e perna expostos a diferentes frequências vibratórias, de forma a verificar a hipótese de diferentes frequências vibratórias determinarem diferentes respostas térmicas, quando comparado com um grupo de controlo.
Metodologia: oito participantes do sexo masculino com media de idades de 24,13±1,5 anos foram expostos à vibração através de uma plataforma vibratória síncrona com aplicação aleatória de duas frequências de vibração (25Hz e 50Hz) e um procedimento de controlo, sem recurso à vibração. Foram realizadas 5 repetições de 1 minuto, com intervalos de 1 minuto entre cada exposições tendo sido a amplitude usada foi de 5-6 mm Resultados: a maior diferença de temperaturas entre “antes” e os momentos seguintes verifica-se na área CDa (coxa dominante face anterior) para a frequência de 50 Hz, com uma diferença de 0,65ºC. Nas regiões posteriores ocorre um decréscimo geral, verificando se a maior descida de 1,14ºC na CDp (coxa dominante face posterior) para a frequência de 50Hz. Conclusão: a exposição às diferentes condições
experimentais tem influência na alteração da temperatura da pele dos membros inferiores.
Objective: to analyze the thermal responses of the thigh and leg muscles exposed to different vibrational frequencies, in order to verify whether different vibrational frequencies induces different thermal responses when compared to a control. Methods eight male participants with a mean age of 24.13 ± 1.5 were exposed to vibration through a synchronous vibrational platform, with random application of two vibration frequencies (25Hz and 50Hz) and a control procedure, without resource to vibration. 5 repetitions of 1 minute each, with constant intervals of 1 minute were performed. The vibration amplitude ranged between 5-6 mm. Results: the greatest temperature differences between “before” and the following moments were on the CDa area (anterior aspect of the dominant thigh) for the 50Hz frequency, with a difference of 0,65ºC. On the posterior aspect of the leg and thigh generally a decrease occurs, with the greatest registered decrease of 1,14ºC on the CDp (posterior aspect of the dominant thigh) for the 50Hz frequency. Conclusion: exposure to the different experimental conditions has influenced the skin temperature of the lower limbs.
Objective: to analyze the thermal responses of the thigh and leg muscles exposed to different vibrational frequencies, in order to verify whether different vibrational frequencies induces different thermal responses when compared to a control. Methods eight male participants with a mean age of 24.13 ± 1.5 were exposed to vibration through a synchronous vibrational platform, with random application of two vibration frequencies (25Hz and 50Hz) and a control procedure, without resource to vibration. 5 repetitions of 1 minute each, with constant intervals of 1 minute were performed. The vibration amplitude ranged between 5-6 mm. Results: the greatest temperature differences between “before” and the following moments were on the CDa area (anterior aspect of the dominant thigh) for the 50Hz frequency, with a difference of 0,65ºC. On the posterior aspect of the leg and thigh generally a decrease occurs, with the greatest registered decrease of 1,14ºC on the CDp (posterior aspect of the dominant thigh) for the 50Hz frequency. Conclusion: exposure to the different experimental conditions has influenced the skin temperature of the lower limbs.
Description
Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em Fisioterapia
Keywords
Exercício vibratório Termografia Alterações térmicas Whole body vibration Thermography Thermal changes