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Standardized low-load repetitive work: evidence of different motor control strategies between experienced workers and a reference group.
Appl Ergon. 2003 Nov; 34(6):533-42.AE

Abstract

The purpose of this laboratory study was to evaluate the possible differences in motor strategies to a new standardized low-load repetitive work task in between healthy experienced workers and a reference group. Work task event duration, i.e. working rhythm, cutting forces, surface electromyographic (EMG) activity from four shoulder muscles, postural activity, and arm and trunk movements in 3D were recorded during low-load repetitive work simulation. The experienced group showed lower EMG activity and frequency contents (P<0.05), more abducted position of the upper arm and forward flexion of the trunk prior to work simulation (P<0.05), and increased arm and trunk range of motion (P<0.05) compared with the reference group. The results highlight that experienced butchers have a different motor strategy compared with a reference group, i.e. more variable form of coordination pattern. Furthermore, the initial implementation of a possible protective motor strategy by experienced workers might be a very important prognostic factor.

Authors+Show Affiliations

Madeleine P
Center for Sensory-Motor Interaction (SMI), Department of Health Science and Technology, Aalborg University, Fredrik Bajers Vej 7, Building D-3, DK-9220 Aalborg, Denmark. pm@smi.auc.dk
Lundager B
No affiliation info available
Voigt M
No affiliation info available
Arendt-Nielsen L
No affiliation info available

MeSH

AdultAnalysis of VarianceArmElectromyographyFood HandlingHumansMaleMiddle AgedMotor SkillsMovementMusculoskeletal DiseasesOccupational DiseasesPostureRange of Motion, ArticularShoulder JointTask Performance and Analysis

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

14559412

Citation

Madeleine, Pascal, et al. "Standardized Low-load Repetitive Work: Evidence of Different Motor Control Strategies Between Experienced Workers and a Reference Group." Applied Ergonomics, vol. 34, no. 6, 2003, pp. 533-42.
Madeleine P, Lundager B, Voigt M, et al. Standardized low-load repetitive work: evidence of different motor control strategies between experienced workers and a reference group. Appl Ergon. 2003;34(6):533-42.
Madeleine, P., Lundager, B., Voigt, M., & Arendt-Nielsen, L. (2003). Standardized low-load repetitive work: evidence of different motor control strategies between experienced workers and a reference group. Applied Ergonomics, 34(6), 533-42.
Madeleine P, et al. Standardized Low-load Repetitive Work: Evidence of Different Motor Control Strategies Between Experienced Workers and a Reference Group. Appl Ergon. 2003;34(6):533-42. PubMed PMID: 14559412.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Standardized low-load repetitive work: evidence of different motor control strategies between experienced workers and a reference group. AU - Madeleine,Pascal, AU - Lundager,Birthe, AU - Voigt,Michael, AU - Arendt-Nielsen,Lars, PY - 2003/10/16/pubmed PY - 2004/3/3/medline PY - 2003/10/16/entrez SP - 533 EP - 42 JF - Applied ergonomics JO - Appl Ergon VL - 34 IS - 6 N2 - The purpose of this laboratory study was to evaluate the possible differences in motor strategies to a new standardized low-load repetitive work task in between healthy experienced workers and a reference group. Work task event duration, i.e. working rhythm, cutting forces, surface electromyographic (EMG) activity from four shoulder muscles, postural activity, and arm and trunk movements in 3D were recorded during low-load repetitive work simulation. The experienced group showed lower EMG activity and frequency contents (P<0.05), more abducted position of the upper arm and forward flexion of the trunk prior to work simulation (P<0.05), and increased arm and trunk range of motion (P<0.05) compared with the reference group. The results highlight that experienced butchers have a different motor strategy compared with a reference group, i.e. more variable form of coordination pattern. Furthermore, the initial implementation of a possible protective motor strategy by experienced workers might be a very important prognostic factor. SN - 0003-6870 UR - https://www.unboundmedicine.com/medline/citation/14559412/Standardized_low_load_repetitive_work:_evidence_of_different_motor_control_strategies_between_experienced_workers_and_a_reference_group_ DB - PRIME DP - Unbound Medicine ER -