The Upper Extremity Loading During Typing Using One, Two and Three Fingers

Details

• Personal Author:
  Dennerlein, Jack T. ; Qin J ; Trudeau M
• Description:
  This study aimed to evaluate the effect of the number of fingers used during typing on the biomechanical loading on the upper extremity. Six subjects typed in phone numbers using their right hand on a stand-alone numeric keypad in three conditions: (1) typing using the index finger; (2) typing using the index and the middle fingers; (3) typing using the index, middle and ring fingers. Typing with three fingers decreased wrist posture deviation, decreased angular velocity at the wrist, elbow and shoulder joints, and decreased peak to peak torques at the wrist and shoulder joints compared to single finger typing, while no difference was found between one and two finger typing. These results demonstrated that different computer keyboarding styles affect the biomechanical loading on the upper extremity. [Description provided by NIOSH]
• Subjects:
  Biomechanical Phenomena Computers Ergonomics Musculoskeletal Diseases Musculoskeletal System Occupational Health Safety
• Keywords:
  Author Keywords: Typing Biomechanics Computer Equipment Keyboard Operators Keyboards Kinematics Kinetics MSD Musculoskeletal Disorders Posture Upper Extremities Upper Extremity

  More +
• ISBN:
  9783642217982
• ISSN:
  0302-9743
• Publisher:
  Springer-Verlag
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  Massachusetts ; OSHA Region 1
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  178-185
• Volume:
  6777
• NIOSHTIC Number:
  nn:20060542
• Citation:
  Digital Human Modeling. Proceedings of the Third International Conference, ICDHM 2011, held as part of HCI International 2011, Orlando, Florida, July 9-14, 2011. Duffy VG ed., Berlin: Springer-Verlag, 2011 Jul; 6777:178-185
• Contact Point Address:
  Jin Qin, Department of Environmental Health, Harvard School of Public Health, Boston, MA, 02115, USA
• Email:
  jqin@hsph.harvard.edu
• Editor(s):
  Duffy VG
• Federal Fiscal Year:
  2011
• NORA Priority Area:
  Services ; Wholesale and Retail Trade
• Performing Organization:
  Harvard University School of Public Health
• Peer Reviewed:
  True
• Start Date:
  20070301
• Source Full Name:
  Digital Human Modeling. Proceedings of the Third International Conference, ICDHM 2011, held as part of HCI International 2011, Orlando, Florida, July 9-14, 2011
• End Date:
  20120228
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e01a37e8677e7e5207da253bd228a7302833e591a0751dfb013416f92292d99800b90826fbc479d09d0fb487434050045bb1df2d15d4d8a1c082730db5a51935
• Download URL:
  https://stacks.cdc.gov/view/cdc/224410/cdc_224410_DS1.pdf
• File Type:
  [PDF - 398.61 KB ]