dc.contributor.author | Smith, SL | |
dc.contributor.author | Allan, R | |
dc.contributor.author | Marreiros, SP | |
dc.contributor.author | Woodburn, J | |
dc.contributor.author | Steultjens, MPM | |
dc.date.accessioned | 2021-02-09T05:03:28Z | |
dc.date.available | 2021-02-09T05:03:28Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 2151-464X | |
dc.identifier.doi | 10.1002/acr.23688 | |
dc.identifier.uri | http://hdl.handle.net/10072/401904 | |
dc.description.abstract | Objective: Muscle co-activation has been shown to be elevated in individuals with knee osteoarthritis (OA) during gait. Comparisons of muscle co-activation across different activities of daily living such as stair negotiation have yet to be explored. The aim of this study was to explore muscle co-activation across different activities of daily living in patients with knee OA. Methods: Muscle co-activation was assessed in 77 symptomatic knee OA patients (mean ± SD age 62.5 ± 8.1 years, body mass index 29.4 ± 6.0 kg/m 2 , and sex 48:29 female:male) using electromyography (EMG), during a series of walking, stair negotiation (ascent, descent), and sit-to-walk activities. EMG was recorded from 7 sites, mediolateral gastrocnemius, biceps femoris, semitendinosus, vastus lateralis/medialis, and rectus femoris, and normalized to maximal voluntary isometric contraction. Correlation was used to assess the consistency of co-activation across activities. Repeated-measures analysis of variance assessed the muscle combination by activity differences. Results: Muscle co-activation was highest during stair ascent. When comparing muscle combinations within the same activity, we found that correlations ranged from r = 0.003 to r = 0.897, of which 80% of the combinations were significant. Between activities, muscle co-activation was significantly different (P < 0.05). Mediolateral muscle co-activation was higher than hamstrings/quadriceps across activities. Conclusion: Two muscle co-activation strategies were observed during activities of daily living in patients with knee OA to maintain stability. Muscle co-activation was higher during more challenging activities, particularly when the joint was accepting load. Mediolateral muscle co-activation was higher than hamstrings/quadriceps, so that mediolateral co-activation was thought to be a stabilization mechanism, while hamstrings/quadriceps co-activation responds to knee flexion moments, suggesting that different muscle combinations may have different roles in responding to joint demand. | |
dc.description.peerreviewed | Yes | |
dc.language | eng | |
dc.publisher | Wiley | |
dc.relation.ispartofpagefrom | 651 | |
dc.relation.ispartofpageto | 660 | |
dc.relation.ispartofissue | 5 | |
dc.relation.ispartofjournal | Arthritis Care and Research | |
dc.relation.ispartofvolume | 71 | |
dc.subject.fieldofresearch | Clinical sciences | |
dc.subject.fieldofresearch | Health services and systems | |
dc.subject.fieldofresearch | Public health | |
dc.subject.fieldofresearch | Psychology | |
dc.subject.fieldofresearchcode | 3202 | |
dc.subject.fieldofresearchcode | 4203 | |
dc.subject.fieldofresearchcode | 4206 | |
dc.subject.fieldofresearchcode | 52 | |
dc.title | Muscle Co-Activation Across Activities of Daily Living in Individuals With Knee Osteoarthritis | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dcterms.bibliographicCitation | Smith, SL; Allan, R; Marreiros, SP; Woodburn, J; Steultjens, MPM, Muscle Co-Activation Across Activities of Daily Living in Individuals With Knee Osteoarthritis, Arthritis Care and Research, 2019, 71 (5), pp. 651-660 | |
dcterms.dateAccepted | 2018-06-26 | |
dc.date.updated | 2021-02-09T04:59:23Z | |
dc.description.version | Accepted Manuscript (AM) | |
gro.rights.copyright | © 2018, American College of Rheumatology. This is the peer reviewed version of the following article: Muscle Co-Activation Across Activities of Daily Living in Individuals With Knee Osteoarthritis, Arthritis Care and Research, 2019, 71 (5), pp. 651-660, which has been published in final form at https://doi.org/10.1002/acr.23688. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving (http://olabout.wiley.com/WileyCDA/Section/id-828039.html) | |
gro.hasfulltext | Full Text | |
gro.griffith.author | Woodburn, Jim | |