Title | Electromyographic analysis of hip abductor exercises performed by a sample of total hip arthroplasty patients. |
Publication Type | Journal Article |
Year of Publication | 2009 |
Authors | Jacobs CA, Lewis M, Bolgla LA, Christensen CP, Nitz AJ, Uhl TL |
Journal | J Arthroplasty |
Volume | 24 |
Issue | 7 |
Pagination | 1130-6 |
Date Published | 2009 Oct |
ISSN | 1532-8406 |
Keywords | Aged, Arthroplasty, Replacement, Hip, Electromyography, Exercise, Female, Hip Joint, Humans, Isometric Contraction, Male, Middle Aged, Muscle, Skeletal, Osteoarthritis, Hip, Postoperative Period, Resistance Training, Weight-Bearing |
Abstract | Weakness of the hip abductors after total hip arthroplasty may result in pain and/or functional limitation. Non-weight-bearing (NWB) exercises are often performed to target the hip abductors; however, muscle activation of NWB exercises has not been compared to weight-bearing (WB) exercises. Our purpose was to evaluate gluteus medius activation during 2 WB and 2 NWB hip abductor strengthening exercises. Fifteen patients at least 6 weeks post unilateral total hip arthroplasty volunteered for the study. Electromyographic amplitude for each exercise was normalized to each patient's maximal voluntary isometric contraction. There were no significant differences in gluteus medius electromyographic amplitudes between the 4 exercises (P = .15). Based on our results, NWB exercises provided no clear benefit in terms of gluteus medius activation when compared to potentially more functional WB exercises in the early postoperative period. |
DOI | 10.1016/j.arth.2008.06.034 |
Alternate Journal | J Arthroplasty |
PubMed ID | 18757169 |