Análise da associação entre a dinamometria isocinética da articulação do joelho e o salto horizontal unipodal, hop test, em atletas de voleibol

Abstract

INTRODUÇÃO: O dinamômetro isocinético tem sido largamente utilizado na avaliação da performance muscular. Devido a seu alto custo, a sua utilização torna-se inviável na prática clínica. O hop test é um teste para avaliação da força e da confiança nos membros inferiores (MMII) que pode ser utilizado na clínica com pequeno gasto de tempo e mínima demanda financeira. O objetivo deste estudo foi verificar se existe associação entre o hop test e dados da função muscular fornecidos pela avaliação do joelho no dinamômetro isocinético em atletas profissionais. MATERIAIS E MÉTODOS: Trinta atletas de voleibol (oito mulheres e 22 homens) foram avaliados no dinamômetro isocinético nas velocidades de 60º/s e 300º/s e no hop test a distância. RESULTADOS: Foi observada somente uma correlação baixa entre déficit de pico de torque (r = 0,441) e de trabalho (r = 0,610) a 60º/s com o déficit da distância saltada entre MMII. Foi observada baixa associação entre a performance muscular e a distância saltada no hop test exceto no membro inferior direito de mulheres. CONCLUSÃO: Este estudo mostrou que o hop test não pode ser usado para substituir a dinamometria isocinética na avaliação da função muscular.

Examination of Balance and Isokinetic Strength in Female Volleyball Players

“…The selected studies choose different execution speeds in the isokinetic dynamometry test. The speeds used in isokinetic dynamometry assessments with volleyball players range from low angular speeds (30 and 60˚.s -1 ), allowing for greater torque production, up to higher angular speeds, such as 300˚.s -1 , in order to be closer to the speed of muscle contraction performed by knee joint muscles in sports practice (D'Alessandro, Silveira, Anjos, Silva, & Fonseca, 2005). In our research, we determined three different angular velocities as low-60˚.s -1 , moderate-180˚.s -1 and high-300˚.s -1 to detect isokinetic knee strength in female volleyball players.…”

The effects of knee extensor eccentric training on functional tests in healthy subjects

“…Other studies included healthy subjects 23 or athletes 13,16,24 in their sample, and although they found similar results to those of the present study (weak and moderate correlation), the discussion is hampered by differences in methodology such as closed kinetic chain 23 or open kinetic chain 13,16,24 , linear isokinetic test 23 or angular isokinetic test 13,14,16,24 , training protocol (mode of contraction, muscle group, number of repetitions, frequency, duration, time to rest, speed of contraction, etc.) and quantity and type of functional tests used in the relationship analysis 59 .…”

“…The fact that isokinetic tests are performed in open kinetic chain and functional tests are performed in closed kinetic chain may have influenced the relationship analysis, which suggests that the muscles of the joints proximal and distal to the knee (hip and ankle) could increase the performance of functional tests 49 . The low speed of contraction used in the training protocol (30°/s) when compared with the velocities of contraction developed in the various functional tests (≥60°/s) 2,13,15,50,51 and the lack of evaluation in the concentric mode 15,23,24 may also have influenced the results. Another factor in our study that could justify the moderate correlations between the torque and hop tests would be the similarity between the speed of movement in the training (30°/s) and the specific hop task.…”

“…Additionally, the functional tests of agility (runs) and hop for distance [17][18][19] provide security and efficiency parameters, being extensively used to assess the athlete's capacity to resume training after injury 20 . Although these functional tests are considered reliable (>80%) and sensitive (>82%), their relationship with the muscle torque of knee extensors and flexors is still controversial in the literature 21 , given that the methodologies differ in: concentric 2,15,[22][23][24] and/or eccentric mode 13,16,25 ; velocity of movement (30,60,70,90,120,150,180,240,270, 300 and 400°/s) 13,16,25 and muscle group (extensors 25,26 and/or flexors 2,13,15,16 ). In light of the above considerations, the hypothesis of the present study was that the strengthening of knee extensors would lead to an improvement in joint function, which could be evidenced by the agility and hop for distance tests.…”

Does the Kinesio Tape Provide more Knee Extensor Torque?

“…On each test day using the isokinetic dynamometer, the participants were submitted to three sets of five repetitions each. Measures for data analysis were selected based on the best performance obtained at the PT (24,25).…”