A hand speed - duty cycle equation for estimating the ACGIH hand activity level rating

Details

• Personal Author:
  Akkas O ; Armstrong TJ ; Azari DP ; Chen C-H ; Hu YH ; Radwin RG ; Rempel D ; Ulin SS
• Description:
  An equation was developed for estimating hand activity level (HAL) directly from tracked root mean square (RMS) hand speed (S) and duty cycle (D). Table lookup, equation or marker-less video tracking can estimate HAL from motion/exertion frequency (F) and D. Since automatically estimating F is sometimes complex, HAL may be more readily assessed using S. Hands from 33 videos originally used for the HAL rating were tracked to estimate S, scaled relative to hand breadth (HB), and single-frame analysis was used to measure D. Since HBs were unknown, a Monte Carlo method was employed for iteratively estimating the regression coefficients from US Army anthropometry survey data. The equation: [Formula: see text], R2 = 0.97, had a residual range +/- 0.5 HAL. The S equation superiorly fits the Latko et al. ( 1997 ) data and predicted independently observed HAL values (Harris 2011) better (MSE = 0.16) than the F equation (MSE = 1.28). [Description provided by NIOSH]
• Subjects:
  Environmental Monitoring Musculoskeletal Diseases Musculoskeletal System Occupational Health Protective Clothing Risk Assessment Risk Factors Safety
• Keywords:
  Analytical-processes Author Keywords: Exposure Assessment Carpal-tunnel-syndrome Exposure-assessment Exposure-levels Extremities Force Hand-protection Musculoskeletal-system Musculoskeletal-system-disorders Physiological-effects Physiology Repetitive-work Repetitive Motion Risk-factors Work-related Musculoskeletal Disorders

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• ISSN:
  0014-0139
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; Michigan ; OSHA Region 5 ; OSHA Region 9 ; Wisconsin
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  184-194
• Volume:
  50
• Issue:
  2
• NIOSHTIC Number:
  nn:20045287
• Citation:
  Ergonomics 2015 Feb; 58(2):184-194
• Contact Point Address:
  Robert G. Radwin, Department of Industrial and Systems Engineering, University of Wisconsin-Madison, 1550 Engineering Drive, Madison, WI 53706-1608
• Email:
  radwin@discovery.wisc.edu
• Federal Fiscal Year:
  2015
• Performing Organization:
  University of Wisconsin-Madison
• Peer Reviewed:
  True
• Start Date:
  20120701
• Source Full Name:
  Ergonomics
• End Date:
  20150630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d2a1dd11f07575c170643d64050725d50e540d00c97f1a99770ef96d4ac45f9df148e30b86848c5b8ee6497fc52410fc26d45b32ecd631d9038ddc56f7aebb67
• Download URL:
  https://stacks.cdc.gov/view/cdc/200752/cdc_200752_DS1.pdf
• File Type:
  [PDF - 247.78 KB ]