Electromyographic Analysis of Hip Abductor Exercises Performed by a Sample of Total Hip Arthroplasty Patients

Cale A. Jacobs, Matt Lewis, Lori Ann Bolgla, Christian P. Christensen, Arthur J. Nitz, Timothy L. Uhl

Research output: Contribution to journalArticle

13 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)1130-1136
Number of pages7
JournalJournal of Arthroplasty
Volume24
Issue number7
DOIs
StatePublished - Oct 1 2009

Fingerprint

Arthroplasty
Hip
Exercise
Weight-Bearing
Isometric Contraction
Postoperative Period
Pain
Muscles

Keywords

  • EMG
  • THA
  • closed kinetic chain
  • open kinetic chain

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Electromyographic Analysis of Hip Abductor Exercises Performed by a Sample of Total Hip Arthroplasty Patients. / Jacobs, Cale A.; Lewis, Matt; Bolgla, Lori Ann; Christensen, Christian P.; Nitz, Arthur J.; Uhl, Timothy L.

In: Journal of Arthroplasty, Vol. 24, No. 7, 01.10.2009, p. 1130-1136.

Research output: Contribution to journalArticle

Jacobs, Cale A. ; Lewis, Matt ; Bolgla, Lori Ann ; Christensen, Christian P. ; Nitz, Arthur J. ; Uhl, Timothy L. / Electromyographic Analysis of Hip Abductor Exercises Performed by a Sample of Total Hip Arthroplasty Patients. In: Journal of Arthroplasty. 2009 ; Vol. 24, No. 7. pp. 1130-1136.
@article{9d9827cb4f2c4b2bbfe0928532482628,
title = "Electromyographic Analysis of Hip Abductor Exercises Performed by a Sample of Total Hip Arthroplasty Patients",
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.",
keywords = "EMG, THA, closed kinetic chain, open kinetic chain",
author = "Jacobs, {Cale A.} and Matt Lewis and Bolgla, {Lori Ann} and Christensen, {Christian P.} and Nitz, {Arthur J.} and Uhl, {Timothy L.}",
year = "2009",
month = "10",
day = "1",
doi = "10.1016/j.arth.2008.06.034",
language = "English (US)",
volume = "24",
pages = "1130--1136",
journal = "Journal of Arthroplasty",
issn = "0883-5403",
publisher = "Churchill Livingstone",
number = "7",

}

TY - JOUR

T1 - Electromyographic Analysis of Hip Abductor Exercises Performed by a Sample of Total Hip Arthroplasty Patients

AU - Jacobs, Cale A.

AU - Lewis, Matt

AU - Bolgla, Lori Ann

AU - Christensen, Christian P.

AU - Nitz, Arthur J.

AU - Uhl, Timothy L.

PY - 2009/10/1

Y1 - 2009/10/1

N2 - 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.

AB - 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.

KW - EMG

KW - THA

KW - closed kinetic chain

KW - open kinetic chain

UR - http://www.scopus.com/inward/record.url?scp=70349260883&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70349260883&partnerID=8YFLogxK

U2 - 10.1016/j.arth.2008.06.034

DO - 10.1016/j.arth.2008.06.034

M3 - Article

C2 - 18757169

AN - SCOPUS:70349260883

VL - 24

SP - 1130

EP - 1136

JO - Journal of Arthroplasty

JF - Journal of Arthroplasty

SN - 0883-5403

IS - 7

ER -