Investigating Sensitivity to Vibrotactile Stimulation in Isometric and Dynamic Work for Effective Ergonomic Intervention

Details

• Journal Article:
  International Journal of Industrial Ergonomics
• Personal Author:
  Tajdari, Mahdis ; Yang, Xiang ; Islam, Md Shafiqul ; Lim, Sol
• Description:
  This study examined how isometric force exertion (Study 1) and dynamic work tasks (Study 2) influence vibrotactile sensitivity and spatial acuity across body regions. In Study 1, eighteen participants exerted isometric force at 30% of maximum voluntary contraction, with perception tested at the upper arm, thigh, and lower back. In Study 2, another eighteen participants performed shoveling, lifting, and standing tasks, with assessments at the upper arm, upper back, and lower back. Results showed that isometric force exertion reduced sensitivity and spatial acuity. The upper arm was more sensitive than the thigh and lower back, while the thigh exhibited better spatial acuity than the upper arm and lower back. Shoveling reduced spatial acuity compared to standing, and the upper arm had the highest spatial acuity among sites. These findings suggest that force exertion and task type significantly influence tactile perception, with implications for designing vibrotactile feedback in ergonomics applications. Description provided by NIOSH
• Subjects:
  • Ergonomics
  • Occupational Health
  • Safety
  • Vibration
  • Wearable Electronic Devices
• Keywords:
  • Ergonomics
  • Vibration
  • Sensory perceptual processes
  • Sensory thresholds
  • Force
  • Wearable technologies
  • Author Keywords: Vibrotactile perception
  • Sensory threshold
  • Spatial acuity
• ISSN:
  0169-8141
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Chicago Region OSHA ; Illinois ; Maryland ; Philadelphia Region OSHA ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  8 pdf pages
• Volume:
  115
• NIOSHTIC Number:
  nn:20071822
• Citation:
  Int J Ind Ergon 2026 Sep; 115:103989
• Contact Point Address:
  Sol Lim, Department of Industrial and Systems Engineering, Virginia Tech, 1145 Perry Street, Blacksburg, 24061, VA, USA
• Email:
  sol@vt.edu
• Federal Fiscal Year:
  2026
• Performing Organization:
  Johns Hopkins University
• Peer Reviewed:
  True
• Start Date:
  2005/07/01
• End Date:
  2028/06/30
• Download URL:
  https://stacks.cdc.gov/view/cdc/260045/cdc_260045_DS1.pdf
• File Type:
  [PDF - 2.23 MB]
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ee7d5bf969672fca328e4b4a2c0f2be289e99b4506bdb092c32452b816a2237de5b4c5ba52c54ccb962e11b0fab1073487f46a4dcb6dbac07eb65ba5e98e15bf