Muscle Synergies in People With Chronic Ankle Instability During Anticipated and Unanticipated Landing-Cutting Tasks.
Although neuromuscular deficits in people with chronic ankle instability (CAI) have been identified, previous researchers have mostly investigated the activation of multiple muscles in isolation. Investigating muscle synergies in people with CAI would provide information about the coordination and c...
| Publicado en: | Journal of Athletic Training (KnowledgeWorks Global, Ltd) Vol. 58; no. 2; pp. 143 - 153 |
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| Autores principales: | , , |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
KnowledgeWorks Global, Ltd
Feb2023
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=163025354&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 163025354 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10626050 HB36 jtl: Journal of Athletic Training (KnowledgeWorks Global, Ltd) issn: 10626050 maglogo: N pubinfo: dt: Feb2023 vid: 58 iid: 2 pid: 81084 pub: KnowledgeWorks Global, Ltd place: Richmond, Virginia artinfo: ui: 163025354 163025354 163025354 10.4085/1062-6050-74-21 163025354 ppf: 143 ppct: 10 formats: tig: atl: Muscle Synergies in People With Chronic Ankle Instability During Anticipated and Unanticipated Landing-Cutting Tasks. aug: au: Kim, Hoon Palmieri-Smith, Riann Kipp, Kristof affil: Department of Sports Medicine, Soonchunhyang University, Asan, South Korea sug: subj: Joint Instability Physiopathology Ankle Joint Physiology Chronic Disease Task Performance and Analysis Muscle, Skeletal Physiology Jumping Neuromuscular Control Human Cross Sectional Studies Male Female Adolescence Adult Electromyography Gastrocnemius Muscle Physiology Soleus Muscles Physiology Tibialis Anterior Muscle Physiology Physical Activity Questionnaires Peroneus Longus Muscles Physiology Descriptive Statistics Funding Source Biomechanics Adolescent: 13-18 years Adult: 19-44 years Male Female ab: Although neuromuscular deficits in people with chronic ankle instability (CAI) have been identified, previous researchers have mostly investigated the activation of multiple muscles in isolation. Investigating muscle synergies in people with CAI would provide information about the coordination and control of neuromuscular activation strategies and could supply important information for understanding and rehabilitating neuromuscular deficits in this population. To assess and compare muscle synergies using nonnegative matrix factorization in people with CAI and healthy control individuals as they performed different landing-cutting tasks. Cross-sectional study. Laboratory. A total of 11 people with CAI (5 men, 6 women; age = 22 ± 3 years, height = 1.68 ± 0.11 m, mass = 69.0 ± 19.1 kg) and 11 people without CAI serving as a healthy control group (5 men, 6 women; age = 23 ± 4 years, height = 1.74 ± 0.11 m, mass = 66.8 ± 15.5 kg) participated. Muscle synergies were extracted from electromyography of the lateral gastrocnemius, medial gastrocnemius, fibularis longus, soleus, and tibialis anterior (TA) muscles during anticipated and unanticipated landing-cutting tasks. The number of synergies, activation coefficients, and muscle-specific weighting coefficients were compared between groups and across tasks. The number of muscle synergies was the same for each group and task. The CAI group exhibited greater TA weighting coefficients in synergy 1 than the control group (P =.02). In addition, both groups demonstrated greater fibularis longus (P =.03) weighting coefficients in synergy 2 during the unanticipated landing-cutting task than the anticipated landing-cutting task. These results suggest that, although both groups used neuromuscular control strategies of similar complexity or dimensionality to perform the landing-cutting tasks, the CAI group displayed different muscle-specific weightings characterized by greater emphasis on TA function in synergy 1, which may reflect an effort to increase joint stability to compensate for ankle instability. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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