RESUMOIntrodução: Kinesio Taping é uma técnica realizada com aplicação de fitas elásticas sobre a pele, que se propõe a produzir determinados efeitos com fins de prevenção e tratamento das lesões musculoesqueléticas. No entanto, os meios pelos quais tais efeitos ocorrem continuam sendo investigados e discutidos, principalmente no que diz respeito à utilização no campo da reabilitação e do esporte. Objetivo: Analisar a relação da atividade eletromiográfica encontrada nos músculos vasto lateral (VL) e vasto medial (VM) em duas condições: sem aplicação de Kinesio Taping (GnKT) e com aplicação de Kinesio Taping (GKT) em uma população saudável, com experiência em treinamento de força. Métodos: Dezoito sujeitos do sexo masculino (idade: 28,1 ± 6,9 anos; massa corporal: 85,5 ± 8,3 kg; estatura: 179,5 ± 6,9 cm; comprimento de membro inferior: 97,0 ± 4,2 cm) realizaram o exercício de meio-agachamento livre, com velocidade controlada, sem e com aplicação de Kinesio Taping. A relação foi verificada pela proporção de magnitude de ativação (VM/VL), utilizando-se os valores de root mean square (RMS). A sequência para realização dos exercícios nas condições mencionadas foi randomizada e balanceada. Resultados: Os valores encontrados para a razão VM/VL na situação GnKT foram de 83,96 ± 5,79% para VM e 84,13 ± 7,16% para VL. Já na situação GKT, 84,55 ± 16,97% para VM e 80,53 ± 9,20% para VL. Não foram observadas diferenças significativas nos valores de RMS para a relação VM/VL submetidos a aplicação de Kinesio Taping. Conclusão: A aplicação de Kinesio Taping não demonstrou influenciar a relação da atividade eletromiográfica entre os músculos vasto lateral e vasto medial durante a execução do exercício de meio-agachamento.Descritores: exercício; eletromiografia; fita atlética. ABSTRACT Introduction: Kinesio Taping is a technique carried out with application of elastic tapes on the skin, which is intended to produce certain effects on prevention and treatment of musculoskeletal injuries. However, the means by which these effects occur are still being investigated and discussed, particularly with regard to rehabilitation and sport. Objective: To analyze the relationship of the electromyographic activity found in the vastus lateralis (VL) and vastus medialis (VM) muscles on two conditions: without the application of Kinesio Taping (GnKT) and with the application of Kinesio Taping (GKT) in a healthypopulation with experience in strength training. Methods: Eighteen male subjects (age: 28.1 ± 6.9 years, body mass: 85.5 ± 8.3 kg, height: 179.5 ± 6.9 cm, length of lower limb: 97.0 ± 4.2 cm)
Partial weight support (PWS) is an intervention method that allows a decrease in body weight by a suspension apparatus, which accommodates elevations and body falls during treadmill walking. It is frequently prescribed for individuals with movement disorders whose treatment programs aims to decrease the loads in the tissues, promoting joint protection and pain relieve. However, little is known about the actual repercussions generated in gait when partial weight support is used. Thus, the present study aimed to verify the effect of speed and PWS on kinematic and electromyographic variables of healthy individuals. Forty nine healthy subjects (18 women), with 28.7 (± 6.7) years of age, body mass of 76.9 (± 14.9) kg, height of 173.3 (± 14.9) took part of the study. They walked in a treadmill at 3 different velocities (2.0 km/h, 4 km/h and at a self-selected pace), and under 4 levels of partial weight suspension: 0%, 20%, 50% and 80%. All volunteers went through the 12 conditions. We found that PWS above 50% at low velocities and at self-selected pace the gait cadence decreases, the balance phase increases, articular amplitudes and hip, knee and ankle peaks decrease. Higher PWS induced a decrease in the electromyographic activity in gluteus medius, rectus femoris, vastus lateralis, biceps femoris, tibialis anterior and lateral gastrocnemius muscles in all gait phases. These results suggest that the suspension has a direct influence in the gait behavior of healthy individuals. It decreases muscle and joint demands without changing its main characteristics, allowing the use of this strategy for joint protection and early return to independent locomotion.
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