OBJECTIVE: To examine gluteus medius (GMed) muscle activity while performing standing hip abduction exercise in the transverse plane at different angles. MATERIAL AND METHOD: Muscle activity of both sides of the GMed was measured by electromyography (EMG) with a sampling frequency of 1,500 Hz. Participants were asked to perform standing hip abduction exercise in the transverse plane at different angles including 0 degrees, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degr Percent maximum voluntary isometric contraction (MVIC) of average EMG of GMed muscles was reportedfrom three trials for each limb. Repeated-measure ANOVA was used to analyze the data. RESULTS: Nine healthy volunteers were included in the present study. The finding indicated that angle of hip motion in the transverse plane significantly (p<0.05) affects GMed muscle activity of swing and stance limbs. Standing hip abduction exercise at 30 degrees in the transverse plane was observed to produce the highest EMG ofswing limb (64.68% MVIC) than other angles. In stance limb, a decreasing trend of GMed muscle activity while performing standing hip abduction exercise was noted from 0 degree to 90 degres in the transverse plane, respectively. CONCLUSION: GMed muscle activities ofswing and stance limbs during hip abduction exercise exhibited the highest EMG at 30 degrees and 0 degrees in the transverse plane, respectively. Therefore, these exercises of GMed muscle could be suggested for early rehabilitation. Standing exercises with 0 degrees and 30 degrees hip abductions might be suitable for weight bearing and non-weight bearing purposes.
OBJECTIVE: To examine gluteus medius (GMed) muscle activity while performing standing hip abduction exercise in the transverse plane at different angles. MATERIAL AND METHOD: Muscle activity of both sides of the GMed was measured by electromyography (EMG) with a sampling frequency of 1,500 Hz. Participants were asked to perform standing hip abduction exercise in the transverse plane at different angles including 0 degrees, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degr Percent maximum voluntary isometric contraction (MVIC) of average EMG of GMed muscles was reportedfrom three trials for each limb. Repeated-measure ANOVA was used to analyze the data. RESULTS: Nine healthy volunteers were included in the present study. The finding indicated that angle of hip motion in the transverse plane significantly (p<0.05) affects GMed muscle activity of swing and stance limbs. Standing hip abduction exercise at 30 degrees in the transverse plane was observed to produce the highest EMG ofswing limb (64.68% MVIC) than other angles. In stance limb, a decreasing trend of GMed muscle activity while performing standing hip abduction exercise was noted from 0 degree to 90 degres in the transverse plane, respectively. CONCLUSION:GMed muscle activities ofswing and stance limbs during hip abduction exercise exhibited the highest EMG at 30 degrees and 0 degrees in the transverse plane, respectively. Therefore, these exercises of GMed muscle could be suggested for early rehabilitation. Standing exercises with 0 degrees and 30 degrees hip abductions might be suitable for weight bearing and non-weight bearing purposes.
Authors: Luke McCarney; Alexander Andrews; Phoebe Henry; Azharuddin Fazalbhoy; Isaac Selva Raj; Noel Lythgo; Julie C Kendall Journal: Chiropr Man Therap Date: 2020-10-19