Effects of an exoskeleton on muscle activity in tasks requiring arm elevation: Part I – Experiments in a controlled laboratory setting.
BACKGROUND: Long-term work with elevated arms, or overhead work, is a risk factor for musculoskeletal complaints and disorders. Upper-limb exoskeletons are a promising tool for reducing occupational workload when working with hands above shoulder level. OBJECTIVE: The purpose of this study was to as...
| Publicado en: | Work Vol. 77; no. 4; pp. 1179 - 1189 |
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| Autores principales: | , , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Sage Publications Inc.
2024
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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=176591144&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 176591144 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10519815 3RC jtl: Work issn: 10519815 maglogo: N pubinfo: dt: 2024 vid: 77 iid: 4 pid: 344 pub: Sage Publications Inc. place: Thousand Oaks, California artinfo: ui: 176591144 173646216 176591144 176591144 10.3233/WOR-230217 176591144 ppf: 1179 ppct: 10 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Effects of an exoskeleton on muscle activity in tasks requiring arm elevation: Part I – Experiments in a controlled laboratory setting. aug: au: Mänttäri, Satu Rauttola, Ari-Pekka Halonen, Janne Karkulehto, Jutta Säynäjäkangas, Pihla Oksa, Juha affil: Work Ability and Working Careers, Finnish Institute of Occupational Health, Oulu, Finland sug: subj: Exoskeleton Devices Utilization Muscle, Skeletal Physiopathology Arm Physiology Shoulder Joint Physiology Clinical Laboratories, Hospital Task Performance and Analysis Human Heart Rate Grip Strength Elasticity Nerve Conduction Studies Workload Electromyography Male Female Adult Exertion Data Analysis Software Analysis of Variance Post Hoc Analysis Funding Source Adult: 19-44 years Male Female ab: BACKGROUND: Long-term work with elevated arms, or overhead work, is a risk factor for musculoskeletal complaints and disorders. Upper-limb exoskeletons are a promising tool for reducing occupational workload when working with hands above shoulder level. OBJECTIVE: The purpose of this study was to assess the effects of upper-limb exoskeleton on muscular and physical strain and perceived exertion during dynamic work at four different shoulder joint angles. Further, we evaluated if there are any negative effects associated with the use of exoskeleton. METHODS: A total of 15 student participants performed dynamic work in laboratory setting with and without an exoskeleton at four different shoulder angles: 60, 90, 120 and 150 degrees. Muscle electrical activity from 8 muscles of the upper body, perceived exertion, and heart rate were measured during the work task, and grip strength, muscle stiffness, tone, and elasticity from six muscles, m. deltoideus physiological cross-sectional area and muscle fiber pennation angle, and nerve conduction velocity were measured before and after the work task. RESULTS: Based on the results, the use of exoskeleton significantly reduced the muscle activity of the upper limb, shoulder, and back muscles. The reduction was most significant when the arm elevation was 120°, and in m. deltoideus muscle activity. RPE was also positively affected indicating reduction in workload when using exoskeleton. CONCLUSION: The results suggest that the use of upper limb exoskeleton has potential to reduce physical workload during overhead work and, consequently, reduce the risk for work-related musculoskeletal disorders. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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