Trapezius Muscle Activity Variation During Computer Work Performed by Individuals with and Without Neck-Shoulder Pain

Details

• Personal Author:
  Kelson DM ; Mathiassen SE ; Srinivasan D
• Description:
  This study aimed at determining the extent to which individuals with neck-shoulder pain and non-symptomatic individuals differ in muscle activation patterns, when performing computer work, as quantified by exposure variation analysis (EVA). As a secondary aim, we also aimed to quantify the day-to-day reliability of EVA variables describing trapezius muscle activation in a non-symptomatic control group. Thirteen touch-typing computer users (pain: n = 5, non-symptomatic: n = 8) completed three pre-selected computer tasks in the laboratory. Upper trapezius muscle activity was recorded using electromyography and analyzed using EVA with five amplitude and five duration categories. Individuals with neck-shoulder pain spent less time at low amplitudes and exhibited longer uninterrupted periods of muscle activation compared to their non-symptomatic counterparts. Thus, non-symptomatic workers tended to switch between exposure levels more often than individuals with pain. For a majority of EVA variables, ICCs ranged from 0.6 to 0.9, and between-days coefficients of variation were between 0.4 and 2.2. [Description provided by NIOSH]
• Subjects:
  Computers Laboratories Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety
• Keywords:
  Author Keywords: Exposure Variation Analysis Electromyography Laboratory Testing Motor Variability MSD Muscles Musculoskeletal System Disorders Neck Injuries Reliability
• ISSN:
  0003-6870
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  81
• NIOSHTIC Number:
  nn:20065968
• Citation:
  Appl Ergon 2019 Nov; 81:102908
• Contact Point Address:
  Divya Srinivasan, Industrial and Systems Engineering, Virginia Tech 250 Durham Hall, 1145 Perry Street, Blacksburg, VA, 24060
• Email:
  sdivya1@vt.edu
• Federal Fiscal Year:
  2020
• Performing Organization:
  Virginia Polytechnic Institute and State University , Blacksburg
• Peer Reviewed:
  True
• Start Date:
  20010701
• Source Full Name:
  Applied Ergonomics
• End Date:
  20260630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:619b55f9b4e70d3cfc4ae3895790305fa586f31867305e9d3d03ad962bc728873232b5f8e1ea3a140e794f15a197a1d09f5abdf2bf739fa40c5dd352a0f53170
• Download URL:
  https://stacks.cdc.gov/view/cdc/209061/cdc_209061_DS1.pdf
• File Type:
  [PDF - 811.44 KB ]