The Experts below are selected from a list of 735 Experts worldwide ranked by ideXlab platform
Gordon S Cummings - One of the best experts on this subject based on the ideXlab platform.
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Effect of simulating leg length inequality on Pelvic torsion and trunk mobility.
Gait & Posture, 2000Co-Authors: Rebecca S Young, Paul D. Andrew, Gordon S CummingsAbstract:Abstract Although techniques such as roentgenograms and magnetic resonance imaging can provide definitive information about leg length inequality, they are not easily implemented for screening purposes. Using relative heights of palpated iliac crests as criteria for determining degree of Lateral Pelvic Tilt, we examined the immediate effect of simulating leg length inequality on Pelvic torsion and trunk flexion. In seven healthy men and 22 healthy women, 18–28 years of age, a lift of at least 15 mm was placed under either foot to Laterally Tilt the pelvis 1.2° or more. In eight subjects with pre-existing Lateral Pelvic Tilts of 1.8° or more, a lift was also used to eliminate the Tilt. We examined how this Tilting affected torsion between the innominates and mobility of the trunk. The innominate contraLateral to the lift became more anteriorly rotated than the ipsiLateral innominate and Lateral flexion of the trunk increased toward the side of the lift. Both of these effects can be associated with clinical leg length inequality, so a Lateral Pelvic Tilt on the order of 1.2°, if encountered in the clinic, should signal the suitability of more extensive examination for possible lower limb asymmetry.
Min-hyeok Kang - One of the best experts on this subject based on the ideXlab platform.
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The influences of restricted compensatory movement on activation pattern of gluteal muscles during uniLateral weight-bearing exercise
Journal of Human Sport and Exercise, 2020Co-Authors: Soo-yong Kim, Min-hyeok KangAbstract:We investigated changes in Lateral Pelvic Tilt and activity of the gluteal muscles during one-leg standing with and without pressure biofeedback. Seventeen participants performed one-leg standing tests with pressure biofeedback (the threshold was set to the minimum change in pressure) and without biofeedback (standard one-leg standing). The Lateral Pelvic Tilt was significantly lower in one-leg standing with pressure biofeedback than in standard one-leg standing ( p < .05). In addition, gluteus medius and gluteus maximus activity was significantly greater during one-leg standing with pressure biofeedback than during standard one-leg standing ( p < .05). Based on our results, restriction of compensatory movement can be used to increase activity of gluteal muscles when performing uniLateral weight-bearing exercise such as one-leg standing.
Oh-yun Kwon - One of the best experts on this subject based on the ideXlab platform.
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Effects of lumbar stabilization using a pressure biofeedback unit on muscle activity and Lateral Pelvic Tilt during hip abduction in sidelying.
Archives of Physical Medicine and Rehabilitation, 2006Co-Authors: Heon-seock Cynn, Oh-yun KwonAbstract:Abstract Cynn H-S, Oh J-S, Kwon O-Y, Yi C-H. Effects of lumbar stabilization using a pressure biofeedback unit on muscle activity and Lateral Pelvic Tilt during hip abduction in sidelying. Objective To assess the effects of lumbar spine stabilization using a pressure biofeedback unit on the electromyographic activity and angle of Lateral Pelvic Tilt during hip abduction in a sidelying position. Design Comparative, repeated-measures study. Setting University research laboratory. Participants Eighteen able-bodied volunteers (9 men, 9 women) with no history of pathology. Intervention Subjects were instructed to perform hip abduction in a sidelying position in both the preferred hip abduction (PHA) and hip abduction with lumbar stabilization (HALS). A pressure biofeedback unit was used for lumbar stabilization. Main Outcome Measures Surface electromyography was recorded from the quadratus lumborum, gluteus medius, internal oblique, external oblique, rectus abdominis, and multifidus muscles. Kinematic data for Lateral Pelvic Tilt angle were measured using a motion analysis system. Dependent variables were examined with 2 (PHA vs HALS) × 2 (men vs women) analysis of variance. Results Significantly decreased electromyographic activity in the quadratus lumborum (PHA, 60.39%±15.62% of maximum voluntary isometric contraction [MVIC]; HALS, 27.90%±13.03% of MVIC) and significantly increased electromyographic activity in the gluteus medius (PHA, 25.03%±10.25% of MVIC; HALS, 46.06%±21.20% of MVIC) and internal oblique (PHA, 24.25%±18.10% of MVIC; HALS, 44.22%±20.89% of MVIC) were found when the lumbar spine was stabilized. Lateral Pelvic Tilt angle (PHA, 13.86°±4.66°; HALS, 5.55°±4.16°) was decreased significantly when the lumbar spine was stabilized. In women the electromyographic activity (percentage of MVIC) in gluteus medius, external oblique, and rectus abdominis was significantly higher than that observed in men. Conclusions With lumbar stabilization, the gluteus medius and internal oblique activity was increased significantly, and the quadratus lumborum activity was decreased significantly, causing reduced Lateral Pelvic Tilt in a sidelying position. These results suggest that hip abduction with lumbar stabilization is useful in excluding substitution by the quadratus lumborum.
Rebecca S Young - One of the best experts on this subject based on the ideXlab platform.
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Effect of simulating leg length inequality on Pelvic torsion and trunk mobility.
Gait & Posture, 2000Co-Authors: Rebecca S Young, Paul D. Andrew, Gordon S CummingsAbstract:Abstract Although techniques such as roentgenograms and magnetic resonance imaging can provide definitive information about leg length inequality, they are not easily implemented for screening purposes. Using relative heights of palpated iliac crests as criteria for determining degree of Lateral Pelvic Tilt, we examined the immediate effect of simulating leg length inequality on Pelvic torsion and trunk flexion. In seven healthy men and 22 healthy women, 18–28 years of age, a lift of at least 15 mm was placed under either foot to Laterally Tilt the pelvis 1.2° or more. In eight subjects with pre-existing Lateral Pelvic Tilts of 1.8° or more, a lift was also used to eliminate the Tilt. We examined how this Tilting affected torsion between the innominates and mobility of the trunk. The innominate contraLateral to the lift became more anteriorly rotated than the ipsiLateral innominate and Lateral flexion of the trunk increased toward the side of the lift. Both of these effects can be associated with clinical leg length inequality, so a Lateral Pelvic Tilt on the order of 1.2°, if encountered in the clinic, should signal the suitability of more extensive examination for possible lower limb asymmetry.
Soo-yong Kim - One of the best experts on this subject based on the ideXlab platform.
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The influences of restricted compensatory movement on activation pattern of gluteal muscles during uniLateral weight-bearing exercise
Journal of Human Sport and Exercise, 2020Co-Authors: Soo-yong Kim, Min-hyeok KangAbstract:We investigated changes in Lateral Pelvic Tilt and activity of the gluteal muscles during one-leg standing with and without pressure biofeedback. Seventeen participants performed one-leg standing tests with pressure biofeedback (the threshold was set to the minimum change in pressure) and without biofeedback (standard one-leg standing). The Lateral Pelvic Tilt was significantly lower in one-leg standing with pressure biofeedback than in standard one-leg standing ( p < .05). In addition, gluteus medius and gluteus maximus activity was significantly greater during one-leg standing with pressure biofeedback than during standard one-leg standing ( p < .05). Based on our results, restriction of compensatory movement can be used to increase activity of gluteal muscles when performing uniLateral weight-bearing exercise such as one-leg standing.
