| Hip muscle activity during 3 side-lying hip-strengthening exercises in distance runners. | |
| | |
MedLine Citation:
|
PMID: 22488226 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
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 (F(3,57) = 25.903, P < .001), ABD-ER (F(3,57) = 10.458, P < .001), and CLAM (F(3,57) = 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. |
| | |
Authors:
|
Joseph M McBeth; Jennifer E Earl-Boehm; Stephen C Cobb; Wendy E Huddleston |
Related Documents
:
|
20102926 - Effects of exercise training on myocardial blood flow reserve in patients with heart fa... 12221406 - Assessment of regional systolic and diastolic wall motion velocities in highly trained ... 15548186 - Both leaflet preservation during mitral valve replacement: modified anterior leaflet pr... 22813436 - Caffeine does not alter rpe or pain perception during intense exercise in active women. 20039056 - The effect of 48 weeks of aerobic exercise training on cutaneous vasodilator function i... 3537626 - Effects of phosphate loading on leg power and high intensity treadmill exercise. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of athletic training Volume: 47 ISSN: 1938-162X ISO Abbreviation: J Athl Train Publication Date: 2012 Jan-Feb |
Date Detail:
|
Created Date: 2012-04-10 Completed Date: 2013-01-16 Revised Date: 2013-02-20 |
Medline Journal Info:
|
Nlm Unique ID: 9301647 Medline TA: J Athl Train Country: United States |
Other Details:
|
Languages: eng Pagination: 15-23 Citation Subset: IM |
Affiliation:
|
University of Nevada, Reno, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Athletes Cumulative Trauma Disorders / prevention & control Female Hip Joint / physiology* Humans Isometric Contraction* Male Muscle, Skeletal / physiology* Resistance Training* Running / physiology* |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Acute lower extremity running kinematics after a hamstring stretch.
Next Document: Lumbopelvic joint manipulation and quadriceps activation of people with patellofemoral pain syndrome...