Postural factors contributing to reaching speed and accuracy.
Objectives. Occupational reaching tasks performed with faulty postures may contribute to inefficient movement patterns that could lead to injury. Understanding relationships between posture and muscle activation during reaching tasks may elucidate movement patterns that increase occupational injury...
| Publicado en: | International Journal of Occupational Safety & Ergonomics Vol. 31; no. 3; pp. 903 - 913 |
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| Autores principales: | , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Sep2025
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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=188605140&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 188605140 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10803548 39QK jtl: International Journal of Occupational Safety & Ergonomics issn: 10803548 maglogo: N pubinfo: dt: Sep2025 vid: 31 iid: 3 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 188605140 183620077 188605140 188605140 10.1080/10803548.2025.2466919 188605140 ppf: 903 ppct: 10 formats: tig: atl: Postural factors contributing to reaching speed and accuracy. aug: au: Chimera, Nicole J. Bohunicky, Sarah Glazebrook, Cheryl Scribbans, Trisha affil: Faculty of Applied Health Sciences, Brock University, Canada sug: subj: Posture Evaluation Occupational-Related Injuries Prevention and Control Task Performance and Analysis Movement Physiology Shoulder Physiology Pectoralis Muscles Physiology Trapezius Muscles Physiology Range of Motion Evaluation Human Male Female Adolescence Adult Middle Age Pectoralis Muscles Anatomy and Histology Muscle, Skeletal Physiology Correlational Studies Secondary Analysis Crossover Design Electromyography Biomechanics Reaction Time Data Analysis Software T-Tests Mann-Whitney U Test Pearson's Correlation Coefficient Linear Regression Descriptive Statistics Funding Source Adolescent: 13-18 years Adult: 19-44 years Middle Aged: 45-64 years Male Female ab: Objectives. Occupational reaching tasks performed with faulty postures may contribute to inefficient movement patterns that could lead to injury. Understanding relationships between posture and muscle activation during reaching tasks may elucidate movement patterns that increase occupational injury risk in workers. This study assessed whether postural factors and muscle activation predict forward reaching movement performance and accuracy. Methods. Predictor variables of forward shoulder posture (FSP), pectoral length, upper (UT), middle (MT) and lower trapezius (LT) and pectoralis major (PM) muscle activation, and UT:PM, MT:PM, and LT:PM co-activation during forward reaching were analysed for 56 individuals. Sequential linear regression equations assessed reaching variance. Results. For females, FSP, UT activation, and UT:PM co-activation explained 36% of reaction time (RT) variance, and MT:PM co-activation explained 14% of endpoint accuracy variance. For males, MT:PM co-activation explained 17% of movement time (MvT) variance, and FSP, MT:PM co-activation and MT explained 23% of accuracy variance. Conclusion. Increased co-activation was a predictor of movement performance; however, performance outcome variables differed between males (MvT) and females (RT). Muscle co-activation coupled with FSP and posterior shoulder muscle activation resulted in differences in predicting reaching performance variance. Practitioners might consider evaluating these muscle activation and postural factors in occupational reaching tasks. Trial registration: ClinicalTrials.gov identifier: NCT04944745. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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