Validation of a software program for measuring fatigue-related changes in keystroke durations

Details

• Personal Author:
  Johnson PW ; Kim JH
• Description:
  Intensive computer use has been associated with musculoskeletal disorders (MSDs). Although the underlying mechanisms are still not fully understood, muscle fatigue is thought to be a contributing factor. Previous studies have shown that keystroke durations are related to muscle twitch durations and may be used as a surrogate measure of muscle fatigue. Software tools have been developed to measure keystroke durations; however, the accuracy of these programs may be influenced by the computer and/or the operating system (OS). Keystrokes were collected from six subjects and analyzed to determine whether there were any differences in keystroke durations measured by an OS-dependant software program and keystrokes collected directly from the keyboard using a USB analyzer (gold standard). The results demonstrated that the OS-dependant software program underestimated keystroke durations by 3.8 ms (103.5 vs. 107.3 ms; p < 0.0001) but keystroke durations at the individual level were highly correlated between the two systems (R(2) = 0.997). Despite the small differences, the high correlation between systems indicated that the software program could be used to collect keystroke durations. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Computers Cumulative Trauma Disorders Fatigue Men Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety Women
• Keywords:
  Biomechanics Cumulative-trauma-disorders Humans Muscles Musculoskeletal-system Musculoskeletal-system-disorders Physiology
• ISBN:
  9781424441211
• ISSN:
  1557-170X
• Publisher:
  IEEE Engineering in Medicine and Biology Society
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Massachusetts ; OSHA Region 1 ; OSHA Region 10 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  2011
• NIOSHTIC Number:
  nn:20040845
• Citation:
  Conf Proc IEEE Eng Med Biol Soc 2011 Aug; 2011:7397-7400
• Contact Point Address:
  Jeong Ho Kim, Department of Industrial and Systems Engineering, University of Washington, Seattle, WA 98195
• Email:
  jhkim01@uw.edu
• Federal Fiscal Year:
  2011
• Performing Organization:
  University of Washington
• Peer Reviewed:
  False
• Start Date:
  20080901
• Source Full Name:
  Conference Proceedings of the IEEE Engineering in Medicine and Biology Society
• End Date:
  20110831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fecd067bbd6b8b5386eda4e4f05f6d9d144c07076943333de8fca090e7f4aa4f59560bec78d80964c325f22fc4b8936b86d2523729ae08d430f4e12d12b31907
• Download URL:
  https://stacks.cdc.gov/view/cdc/193564/cdc_193564_DS1.pdf
• File Type:
  [PDF - 429.04 KB ]