Document Detail


Which Exercises Target the Gluteal Muscles While Minimizing Activation of the Tensor Fascia Lata? Electromyographic Assessment Using Fine-Wire Electrodes.
MedLine Citation:
PMID:  23160432     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
STUDY DESIGN: Controlled laboratory study, repeated measures design. OBJECTIVES: To compare hip abductor muscle activity during selected exercises using fine-wire electromyography (EMG), and determine which exercises are best for activating gluteus medius and the superior portion of gluteus maximus while minimizing activity of tensor fascia lata (TFL). BACKGROUND: Abnormal hip kinematics (i.e. excessive hip adduction and internal rotation) has been linked to certain musculoskeletal disorders. The TFL is a hip abductor but also internally rotates the hip. As such, it may be important to select exercises that activate the gluteal hip abductors while minimizing activation of TFL. METHODS: Twenty healthy persons participated. EMG signals were obtained from the gluteus medius, superior gluteus maximus, and TFL muscles using fine-wire electrodes as subjects performed 11 different exercises. Normalized EMG signal amplitude was compared among muscles for each exercise using multiple 1-way repeated measures analyses of variance (ANOVAs). A descriptive gluteal-to-TFL muscle activation (GTA) index was used to identify preferred exercises for recruiting the gluteal muscles while minimizing TFL activity. RESULTS: Both gluteal muscles were significantly (P<.05) more active than TFL in unilateral and bilateral bridging, quadruped hip extension (knee flexed and extending), the clam, side-stepping, and squatting. The GTA index ranged from 18 to 115, and was highest for the clam (115), side-step (64), unilateral bridge (59), and both quadruped exercises (50). CONCLUSION: If the goal of rehabilitation is to preferentially activate the gluteal muscles while minimizing TFL activation, then the clam, side-step, unilateral bridge, and both quadruped hip extension exercises would appear to be most appropriate.J Orthop Sports Phys Ther, Epub 16 November 2012. doi:10.2519/jospt.2013.4116.
Authors:
David M Selkowitz; George J Beneck; Christopher M Powers
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-16
Journal Detail:
Title:  The Journal of orthopaedic and sports physical therapy     Volume:  -     ISSN:  1938-1344     ISO Abbreviation:  J Orthop Sports Phys Ther     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7908150     Medline TA:  J Orthop Sports Phys Ther     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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