Immediate effects of Dynamic Tape™ on hip muscle activation and torque and on lower limb kinematics: A randomized controlled clinical trial.

This study aimed to evaluate the immediate effect of Dynamic TapeTM (DT) on hip muscle activation and torque and on lower limb kinematics. Forty-five healthy, recreationally active women were randomly assigned to three groups: 1) submitted to the application of DT in the active form in the gluteus medius (GMed) muscle (BG; n = 15), 2) submitted to the application of DT in the placebo form in the GMed muscle (PG; n = 15), and 3) not submitted to any intervention (CG; n = 15). Participants were evaluated for GMed and gluteus maximus (GMax) muscle activation in a maximal voluntary isometric contraction, simultaneously with the assessment of the hip abductor and extensor torques, as well as during two functional tasks - single leg squat (SLS) and jump landing + maximum vertical jump (VJ) - simultaneously with a 2-D kinematic assessment of the lower limb. After DT application in BG, there was a significant decrease in the hip abductor time to peak torque (P = 0.004), hip extensor torque (P = 0.02), excursion to hip adduction (P = 0.007), and to knee flexion (P = 0.02) during the SLS, as well as in GMed activation during VJ (P < 0.05). DT was able to reduce GMed activation and modify lower limb torque and kinematics.

Can gluteal muscle activation discriminate functional performance in moderately trained women? - A cross-sectional study.

This study verified whether the level of gluteal activation during a controlled maximum voluntary contraction may discriminate functional performance in women. Forty-five moderately trained women were assigned to two groups based on the level of gluteal muscle activation on maximum voluntary isometric contraction (MVIC) tests in the dominant limb: higher gluteal activation (HG-n = 22) and lower gluteal activation (LG-n = 22), considering different situations: a) level of activation of the gluteus medius muscle (GMed), b) level of activation of the gluteus maximus muscle (GMax), and c) level of combined activation of the GMed and GMax muscles. The cut-off values for the allocation of participants to groups in each situation were established as a function of the median values of each data set. Functional performance was assessed using the shuttle run, triple hop test, and six-metre timed hop test (STHT). The level of significance was set at 5%. Cohen's d index was included to estimate the magnitude of existing differences. The HG showed significantly shorter times than the LG on STHT performance (p-values ranging from 0.03-0.04), with a moderate effect (Cohen's d = 0.60-0.68) in all situations. The level of gluteal activation could discriminate STHT performance in women.

Effect of two Dynamic Tape™ applications on the electromyographic activity of the gluteus medius and functional performance in women: A randomized, controlled, clinical trial.

INTRODUCTION: Dynamic Tape™ (DT) is a biomechanical tape that is used to directly manage load, modify movement patterns, and assist functioning. However, no studies have evaluated its effectiveness in increasing gluteus medius (GM) muscle activation and improving functional performance. OBJECTIVE: To investigate the effect of two forms of DT applications on the electromyographic (EMG) activity of the GM muscle and lower limb functional performance. METHODS: Thirty-three, healthy, recreationally active women were randomly assigned into two groups: 1) submitted to the DT application on GM muscle that adhered to the stretching method for Kinesio Tape® application (KG, n = 17) and 2) submitted to the DT application on GM muscle that adhered to the stretching method suggested for DT (DG, n = 16). The EMG evaluation of GM was performed at rest, in maximum voluntary isometric contraction, and in the single-leg squat, drop landing, and jump landing + maximum vertical jump tests. Functional performance was evaluated using the triple hop test and the 6-m timed hop test. RESULTS: No significant changes in GM activation or functional performance were found, regardless of the stretching method used. No significant intergroup differences were observed (α = 5%). CONCLUSION: DT did not increase GM activation in functional activities, and it did not improve functional performance in the lower limbs in healthy women, regardless of the form of application used.