scholarly journals Laterality of Gluteus Medius Muscle Activity during Hip Abduction

2016 ◽  
Vol 31 (2) ◽  
pp. 285-288
Author(s):  
Yujiro MASU ◽  
Sayo KURASAWA ◽  
Hiroyasu KOYAMA ◽  
Mizuki KAWATE ◽  
Yasuhiro YAMAMOTO
Keyword(s):  
Muscle Activity ◽  
Gluteus Medius ◽  
Gluteus Medius Muscle ◽  
Hip Abduction

scholarly journals Hip Muscle Activity During 3 Side-Lying Hip-Strengthening Exercises in Distance Runners

2012 ◽  
Vol 47 (1) ◽  
pp. 15-23 ◽  
Author(s):  
Joseph M. McBeth ◽  
Jennifer E. Earl-Boehm ◽  
Stephen C. Cobb ◽  
Wendy E. Huddleston
Keyword(s):  
Muscle Activity ◽  
Repeated Measures ◽  
External Rotation ◽  
Gluteus Maximus ◽  
Gluteus Medius ◽  
Electromyographic Activity ◽  
Maximal Voluntary Isometric Contraction ◽  
Strengthening Exercises ◽  
Hip Abduction ◽  
Hip Strengthening

Context: Lower extremity overuse injuries are associated with gluteus medius (GMed) weakness. Understanding the activation of muscles about the hip during strengthening exercises is important for rehabilitation. Objective: To compare the electromyographic activity produced by the gluteus medius (GMed), tensor fascia latae (TFL), anterior hip flexors (AHF), and gluteus maximus (GMax) during 3 hip-strengthening exercises: hip abduction (ABD), hip abduction with external rotation (ABD-ER), and clamshell (CLAM) exercises. Design: Controlled laboratory study. Setting: Laboratory. Patients or Other Participants: Twenty healthy runners (9 men, 11 women; age = 25.45 ± 5.80 years, height = 1.71 ± 0.07 m, mass = 64.43 ± 7.75 kg) participated. Intervention(s): A weight equal to 5% body mass was affixed to the ankle for the ABD and ABD-ER exercises, and an equivalent load was affixed for the CLAM exercise. A pressure biofeedback unit was placed beneath the trunk to provide positional feedback. Main Outcome Measure(s): Surface electromyography (root mean square normalized to maximal voluntary isometric contraction) was recorded over the GMed, TFL, AHF, and GMax. Results: Three 1-way, repeated-measures analyses of variance indicated differences for muscle activity among the ABD (F3,57 = 25.903, P<.001), ABD-ER (F3,57 = 10.458, P<.001), and CLAM (F3,57 = 4.640, P=.006) exercises. For the ABD exercise, the GMed (70.1 ± 29.9%), TFL (54.3 ± 19.1%), and AHF (28.2 ± 21.5%) differed in muscle activity. The GMax (25.3 ± 24.6%) was less active than the GMed and TFL but was not different from the AHF. For the ABD-ER exercise, the TFL (70.9 ± 17.2%) was more active than the AHF (54.3 ± 24.8%), GMed (53.03 ± 28.4%), and GMax (31.7 ± 24.1 %). For the CLAM exercise, the AHF (54.2 ± 25.2%) was more active than the TFL (34.4 ± 20.1%) and GMed (32.6 ± 16.9%) but was not different from the GMax (34.2 ± 24.8%). Conclusions: The ABD exercise is preferred if targeted activation of the GMed is a goal. Activation of the other muscles in the ABD-ER and CLAM exercises exceeded that of GMed, which might indicate the exercises are less appropriate when the primary goal is the GMed activation and strengthening.

scholarly journals Neuromuscular Changes After Aerobic Exercise in People with Anterior Cruciate Ligament– Reconstructed Knees

2011 ◽  
Vol 46 (5) ◽  
pp. 476-483 ◽  
Author(s):  
Elizabeth C. Dalton ◽  
Kate R. Pfile ◽  
Gerald R. Weniger ◽  
Christopher D. Ingersoll ◽  
Daniel Herman ◽  
...  
Keyword(s):  
Aerobic Exercise ◽  
Muscle Activation ◽  
Dynamic Balance ◽  
Cruciate Ligament ◽  
Vertical Jump ◽  
Gluteus Medius ◽  
Gluteus Medius Muscle ◽  
Vertical Jump Height ◽  
Hip Abduction ◽  
Anterior Cruciate

Context: Anterior cruciate ligament (ACL) reconstructions are common, especially in young, active people. The lower extremity neuromuscular adaptations seen after aerobic exercise provide information about how previously injured patients perform and highlight deficits and, hence, areas for focused treatment. Little information is available about neuromuscular performance after aerobic exercise in people with ACL reconstructions. Objective: To compare dynamic balance, gluteus medius muscle activation, vertical jump height, and hip muscle strength after aerobic exercise in people with ACL-reconstructed knees. Design: Case-control study. Setting: Research laboratory. Patients or Other Participants: Of 34 recreationally active volunteers, 17 had a unilateral primary ACL reconstruction at least 2 years earlier and 17 were matched controls. Intervention(s): All participants performed 20 minutes of aerobic exercise on a treadmill. Main Outcome Measure(s): We recorded dynamic, single-legged balance electromyographic gluteus medius muscle activation, single-legged vertical jump height, and maximum isometric strength for hip abduction, extension, and external rotation preexercise and postexercise. Results: Participants with ACL reconstructions exhibited shorter reach distances during dynamic balance tasks, indicating poorer dynamic balance, and less gluteus medius muscle electromyographic activation. Reductions in hip abduction and extension strength after exercise were noted in all participants; however, those with ACL reconstructions displayed greater hip extensor strength loss after aerobic exercise than did the control group. Conclusions: Neuromuscular changes after aerobic exercise exist in both patients with ACL reconstructions and controls. The former group may experience greater deficits in hip extensor strength after aerobic exercise. Reduced reach distances in people with ACL reconstructions may represent a protective mechanism against excessive tibiofemoral rotation during dynamic balance. Clinicians should identify weaknesses in the resting state and after aerobic exercise in recreationally active patients and those with ACL reconstructions.

scholarly journals An exploratory study investigating the effect of foot type and foot orthoses on gluteus medius muscle activity

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Sean Sadler ◽  
Martin Spink ◽  
Xanne Janse de Jonge ◽  
Vivienne Chuter
Keyword(s):  
Muscle Activity ◽  
Gluteus Medius ◽  
Healthy Adults ◽  
Peak Amplitude ◽  
Future Research ◽  
Foot Orthoses ◽  
Gluteus Medius Muscle ◽  
Foot Posture ◽  
Cavus Foot ◽  
Determine Effect

Abstract Background Abnormal gluteus medius muscle activity is associated with a number of musculoskeletal conditions. Research investigating the effect of foot type and foot orthoses on gluteus medius muscle activity is both conflicting and limited. The primary aim was to investigate the relationship between foot type and gluteus medius muscle activity during shod walking. The secondary aims of this study were to explore the effect and amount of usage of a pair of unmodified prefabricated foot orthoses on gluteus medius muscle activity during shod walking. Methods Foot type was determined using the foot posture index and gluteus medius muscle activity was measured with surface electromyography in 50 healthy adults during shod walking. Participants were then fitted with prefabricated foot orthoses and required to return after 4 weeks. Pearson’s correlation and one-way ANOVA were used to determine effect of foot type. Paired t-tests and ANCOVA were used to determine effect of foot orthoses. Results Participants with a cavus foot type demonstrated significantly more gluteus medius mean (p = 0.04) and peak amplitude (p = 0.01), and a greater range in amplitude (p = 0.01) compared to participants with a neutral foot type. Compared to a planus foot type, participants with a cavus foot type demonstrated significantly larger mean (p = 0.02) and peak amplitude (p = 0.01), and a greater range in amplitude (p = 0.01). Prefabricated foot orthoses did not change the gluteus medius muscle activity. Conclusion When assessing healthy adults with a cavus foot type, clinicians and researchers should be aware that these participants may display higher levels of gluteus medius muscle activity during gait compared to neutral and planus type feet. Additionally, clinicians and researchers should be aware that the type of prefabricated foot orthoses used did not change gluteus medius muscle activity over 4 weeks. Future research should aim to explore this relationship between foot type and gluteus medius muscle activity in larger sample sizes, consider the potential role of other lower extremity muscles and biomechanical variables, and investigate if these findings also occur in people with pathology.

scholarly journals Quantitative MRI of Vastus Medialis, Vastus Lateralis and Gluteus Medius Muscle Workload after Squat Exercise: Comparison Between Squatting with Hip Adduction and Hip Abduction

2012 ◽  
Vol 33 (1) ◽  
pp. 5-14 ◽  
Author(s):  
Augusto Baffa ◽  
Lilian Felicio ◽  
Marcelo Saad ◽  
Marcello Nogueira-Barbosa ◽  
Antonio Santos ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Vastus Lateralis ◽  
Gluteus Medius ◽  
Quantitative Mri ◽  
Vastus Medialis ◽  
Gluteus Medius Muscle ◽  
Limb Injuries ◽  
Squat Exercise ◽  
Before And After ◽  
Hip Abduction

Quantitative MRI of Vastus Medialis, Vastus Lateralis and Gluteus Medius Muscle Workload after Squat Exercise: Comparison Between Squatting with Hip Adduction and Hip AbductionThe aim of the present study was to evaluate the use MRI to quantify the workload of gluteus medius (GM), vastus medialis (VM) and vastus lateralis (VL) muscles in different types of squat exercises. Fourteen female volunteers were evaluated, average age of 22 ± 2 years, sedentary, without clinical symptoms, and without history of previous lower limb injuries. Quantitative MRI was used to analyze VM, VL and GM muscles before and after squat exercise, squat associated with isometric hip adduction and squat associated with isometric hip abduction. Multi echo images were acquired to calculate the transversal relaxation times (T2) before and after exercise. Mixed Effects Model statistical analysis was used to compare images before and after the exercise (ΔT2) to normalize the variability between subjects. Imaging post processing was performed in Matlab software. GM muscle was the least active during the squat associated with isometric hip adduction and VM the least active during the squat associated with isometric hip abduction, while VL was the most active during squat associated with isometric hip adduction. Our data suggests that isometric hip adduction during the squat does not increase the workload of VM, but decreases the GM muscle workload. Squat associated with isometric hip abduction does not increase VL workload.

Gender Differences in Gluteus Medius Muscle Activity Exist in Soccer Players Performing a Forward Jump

2007 ◽  
Vol 15 (2) ◽  
pp. 147-155 ◽  
Author(s):  
Joseph M. Hart ◽  
J. Craig Garrison ◽  
D. Casey Kerrigan ◽  
Riann Palmieri-Smith ◽  
Christopher D. Ingersoll
Keyword(s):  
Gender Differences ◽  
Muscle Activity ◽  
Gluteus Medius ◽  
Soccer Players ◽  
Gluteus Medius Muscle

Comparison of gluteus medius muscle activity during functional tasks in individuals with and without osteoarthritis of the hip joint

2013 ◽  
Vol 28 (7) ◽  
pp. 757-761 ◽  
Author(s):  
Maureen K. Dwyer ◽  
Kelly Stafford ◽  
Carl G. Mattacola ◽  
Timothy L. Uhl ◽  
Mauro Giordani
Keyword(s):  
Hip Joint ◽  
Muscle Activity ◽  
Gluteus Medius ◽  
Osteoarthritis Of The Hip ◽  
Gluteus Medius Muscle
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