Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Motor variability traits among individuals performing repetitive precision work
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0001-9327-6177
Umeå University, Department of Community Medicine and Rehabilitation, Physiotherapy.
University of Gävle, Faculty of Health and Occupational Studies, Department of Occupational and Public Health Sciences. University of Gävle, Centre for Musculoskeletal Research.ORCID iD: 0000-0003-1443-6211
2014 (English)In: Proceedings of the 11th International Symposium on Human Factors in Organizational Design and Management (ODAM), and 46th Annual Nordic Ergonomics Society Conference (NES): Selected and peer reviewed papers / [ed] Ole Broberg et al., Santa Monica, CA: The IEA Press , 2014, 987-989 p.Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Motor variability (MV) refers to the intrinsic variability naturally present in the motor control system. Occurring even in the simplest movements, it is usually manifested as a difference in joint movements, joint coordination and/or muscle activities between successive repeats of a task which are identical in performance. Contrary to the traditional view that MV is detrimental to performance, it is now widely accepted that MV may actually have an important functional role in skill acquisition, and that skilled performance may, actually, be associated with increased MV. Further, MV is related to pain and fatigue, and may play a decisive role in rehabilitation (reviewed in Srinivasan & Mathiassen 2012). Hypothetically, individuals with a larger MV would be better protected against overuse injuries, and recover faster after disorders affecting motor performance. However, whether the extent of MV is, indeed, a consistent individual trait across different tasks is not known.    

The purpose of this study was to let individuals perform a laboratory-based simulation of repetitive upper-extremity precision work and determine:

(i)             Whether it is possible to systematically classify individuals according to the size of their MV in repetitive work;

(ii)            Whether classification of individuals in one working condition on one day persists even when some work-factors are slightly changed, and between different days when they perform the same work.

Repetitive pipetting with a cycle time of 2.8s was performed in the laboratory by a group of 14 healthy female subjects, aged 20-45 years, right-handed and experienced in pipetting, on 3 different days under identical protocol and experimental conditions. Work factors such as work-pace, precision and cognitive load (on top of the pipetting work) were manipulated within each day. Kinematic data were obtained using electromagnetic motion capture systems (FASTRAK).

MV in shoulder elevation, elbow flexion and shoulder-elbow coordination were operationalized using cycle-to-cycle standard deviations of motor parameters such as peak velocities, time lag of peak velocities, phase angle and inter-segmental phase angle. The resulting traits in individuals and the consistency of those traits across tasks and days will be presented.

Place, publisher, year, edition, pages
Santa Monica, CA: The IEA Press , 2014. 987-989 p.
Keyword [en]
Kinematic variability, motor performance, repetitive work, individual traits
National Category
Environmental Health and Occupational Health
Identifiers
URN: urn:nbn:se:hig:diva-17435ISBN: 978-87-93130-13-5 (print)OAI: oai:DiVA.org:hig-17435DiVA: diva2:741777
Conference
46th Annual Nordic Ergonomics Society Conference, Copenhagen, Denmark, 17-20 August 2014
Projects
Motorvar
Funder
Forte, Swedish Research Council for Health, Working Life and Welfare, 2011-0075Forte, Swedish Research Council for Health, Working Life and Welfare, 2009-1761
Available from: 2014-08-29 Created: 2014-08-29 Last updated: 2014-11-11Bibliographically approved

Open Access in DiVA

Extended abstract(315 kB)337 downloads
File information
File name FULLTEXT01.pdfFile size 315 kBChecksum SHA-512
9bc51c755491ec76159ffb51ff0362d5a0e14777fc277cf39c0479e45d05518f98f33e5898cdb2b226fb3319da6e61838f516440d1d3a6781026cac3e2460763
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Srinivasan, DivyaSandlund, JonasMathiassen, Svend Erik
By organisation
Department of Occupational and Public Health SciencesCentre for Musculoskeletal Research
Environmental Health and Occupational Health

Search outside of DiVA

GoogleGoogle Scholar
Total: 337 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

isbn
urn-nbn

Altmetric score

isbn
urn-nbn
Total: 832 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf