Electromyographic Study of Three Parts of the Gluteus Medius Muscle During Functional Activities

Soderberg, Gary L; Dostal, William F.

doi:10.1093/ptj/58.6.691

Cited by 73 publications

(58 citation statements)

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“…However, these results were derived from subjects with numerous musculoskeletal disorders 2,15,[25][26][27] . Therefore, this provides further evidence that rehabilitation programs aimed at increasing the strength and activation of hip muscles, such as the GM, are effective at reducing pain and disability and improving lower limb kinematics and athletic performance 2,5,27) . The results of the present study suggest that the proper exercise method for GM-strengthening exercises for the anterior fiber is WP-ABD, and that for the posterior is WS-ABD.…”

Section: Discussionmentioning

confidence: 81%

“…A number of studies have investigated both the whole GM and its muscle fiber subdivisions [21][22][23] . We also investigated the GM subdivisions, as suggested by previous anatomical studies 5,7,24) . Our present results suggest that the GM subdivisions were activated in isolation and not simultaneously.…”

Section: Discussionmentioning

confidence: 99%

“…It is composed of three distinct sections: the anterior, middle and posterior GM fibers 4,5) . The actions of these segments differ: the anterior GM fiber is involved in hip abduction and internal rotation and assists flexion; the middle GM fiber is involved only in abduction of the hip; and the posterior fiber is involved in hip abduction and external rotation, and assists extension 6,7) .…”

Section: Introductionmentioning

confidence: 99%

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EMG Analysis of Gluteus Medius Subdivisions during Modified Unilateral Biofeedback Exercises for the Lower Limbs

Heo

Yoo

et al. 2013

J Phys Ther Sci

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Abstract.[Purpose] The purpose of this study was to investigate the activation of subdivisions of the gluteus medius during modified unilateral weight-bearing exercises using a pressure-biofeedback unit in order to suggest the most effective exercise method.[Subjects] We recruited 15 healthy adult females with no pain in the gluteus medius and no other orthopedic problems in the lower limbs.[Methods] The enrolled individuals performed four modified unilateral biofeedback exercises: wall-press with adduction force, WP-ADD; wall-press with abduction force, WP-ABD; wall-squat with adduction force, WS-ADD; and wall-squat with abduction force.[Results] The anterior and middle fibers of the gluteus medius were highly activated during WP-ADD, and the posterior fiber of the gluteus medius was activated during WS-ABD.[Conclusion] These results suggest that weight-bearing exercises for gluteus medius strengthening should be more specific, and chosen based on the characteristics of each subdivision.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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EMG Analysis of Gluteus Medius Subdivisions during Modified Unilateral Biofeedback Exercises for the Lower Limbs

Heo

Yoo

et al. 2013

J Phys Ther Sci

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“…25,28,31 Anatomically, these muscles provide lateral stability of the hip joint and pelvis, as they help to control the contralateral pelvic position during unilateral stance in the frontal plane. 27 A 1978 study 49 reported segmental differences in GMed electromyography (EMG) muscle activity. More recently, cadaveric and segments of the GMin are structurally and functionally suited to provide femoroacetabular stability.…”

mentioning

confidence: 99%

Gluteus Minimus and Gluteus Medius Muscle Activity During Common Rehabilitation Exercises in Healthy Postmenopausal Women

Ganderton¹,

Pizzari²,

Cook³

et al. 2017

Journal of Orthopaedic & Sports Physical Therapy

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Study Design Controlled laboratory study, cross-sectional. Background The gluteus medius (GMed) and gluteus minimus (GMin) provide dynamic stability of the hip joint and pelvis. These muscles are susceptible to atrophy and injury in individuals during menopause, aging, and disease. Numerous studies have reported on the ability of exercises to elicit high levels of GMed activity; however, few studies have differentiated between the portions of the GMed, and none have examined the GMin. Objectives To quantify and rank the level of muscle activity of the 2 segments of the GMin (anterior and posterior fibers) and 3 segments of the GMed (anterior, middle, and posterior fibers) during 4 isometric and 3 dynamic exercises in a group of healthy, postmenopausal women. Methods Intramuscular electrodes were inserted into each segment of the GMed and GMin in 10 healthy, postmenopausal women. Participants completed 7 gluteal rehabilitation exercises, and average normalized muscle activity was used to rank the exercises from highest to lowest. Results The isometric standing hip hitch with contralateral hip swing was the highest-ranked exercise for all muscle segments except the anterior GMin, where it was ranked second. The highest-ranked dynamic exercise for all muscle segments was the dip test. Conclusion The hip hitch and its variations maximally activate the GMed and GMin muscle segments, and may be useful in hip muscle rehabilitation in postmenopausal women. J Orthop Sports Phys Ther 2017;47(12):914–922. Epub 15 Oct 2017. doi:10.2519/jospt.2017.7229

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“…However, different muscles respond in different ways depending on the loading; during gait, the gluteus medius muscle fiber activation fluctuates (i.e. anterior fibers may be active when the posterior ones are not and vice versa) (Soderberg et al, 1978).…”

Section: Physiologic Loading Conditions In Fe Codesmentioning

confidence: 99%

Development of a Subject Specific Finite Element Model Used to Predict the Effects of a Single Leg Extension Exercise

Gleeson¹

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The study presented attempts to prove the concept that mechanical changes in the structure of a bone can be predicted for a specific exercise by a subject specific model created from CT data, MRI data, EMG data, and a physiologic FE model. Previous work generated a subject specific FE model of a femur via CT and MRI data as well as created a set of subject specific biomechanical muscle forces that are required to perform a single leg extension exercise. The FE model and muscle forces were implemented into a single leg extension FE code (ABAQUS) along with a specialized bone remodeling UMAT. The UMAT updated the mechanical properties of the femur via a damage-repair bone remodeling algorithm. The single leg extension FE code was verified by applying walking loads to the femur and allowing the system to equilibrate. The results were used to apply the appropriate walking loads to the final FE simulation for the single leg extension exercise. The final FE simulation included applying the single leg extension loads over a one year period and plotting the change in porosity at various regions of the femoral neck. Although only two regions were found to generate valid results, the data seemed counterintuitive to Wolff's Law which states that bone adaptation is promoted when the material is stressed. The model was successful in creating a subject specific model that is capable of predicting changes in the mechanical properties of bone. However, in order to generate valid FE model results, further understanding of the bone remodeling process and application via a FE model is required.

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Electromyographic Study of Three Parts of the Gluteus Medius Muscle During Functional Activities

Cited by 73 publications

References 0 publications

EMG Analysis of Gluteus Medius Subdivisions during Modified Unilateral Biofeedback Exercises for the Lower Limbs

EMG Analysis of Gluteus Medius Subdivisions during Modified Unilateral Biofeedback Exercises for the Lower Limbs

Gluteus Minimus and Gluteus Medius Muscle Activity During Common Rehabilitation Exercises in Healthy Postmenopausal Women

Development of a Subject Specific Finite Element Model Used to Predict the Effects of a Single Leg Extension Exercise

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