Thumb motor performance is greater for two-handed grip compared to single-handed grip on a mobile phone

Details

• Personal Author:
  Dennerlein, Jack T. ; Jindrich DL ; Trudeau MB ; Young JG
• Description:
  The aim of this study was to determine if thumb motor performance varied between singlehanded and two-handed grip for thumb tapping tasks on a mobile phone. A secondary aim was to determine if differences in phone movement variation and thumb flexion could account for variations in motor performance across the two grip configurations. Ten right-handed participants (5 males, 5 females) completed reciprocal thumb tapping tasks on an Apple iPhone 3 in a single-handed and a two-handed grip configuration while an active-marker motion capture system measured 3D kinematics of the thumb and phone. The results show that thumb motor performance was significantly greater for the two-handed grip configuration due to less phone movement variation compared to the single-handed grip configuration. Thumb flexion did not significantly vary across configurations. These data suggest that increasing support for the phone such as by using a two-handed grip could lead to increases in tapping performance. For example, increased performance would be expected when using phones that include a landscape mode and are wide enough to allow a stable two-handed grip. [Description provided by NIOSH]
• Subjects:
  Air Movements Air Pollutants, Occupational Dust Mining Occupational Health Particulate Matter Safety Silicon Dioxide
• Keywords:
  Equipment Design Ergonomics Keyboards Mobile Equipment MSD Muscle Function Muscles Muscle Stress Musculoskeletal Disorders Musculoskeletal System Musculoskeletal System Disorders Telephone Operators

  More +
• ISBN:
  9780945289418
• ISSN:
  1071-1813
• Publisher:
  Human Factors and Ergonomics Society
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  California ; Massachusetts ; OSHA Region 1 ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  56
• NIOSHTIC Number:
  nn:20047731
• Citation:
  Proceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, October 22-26, 2012, Boston, Massachusetts. Santa Monica, CA: Human Factors and Ergonomics Society, 2012 Sep; 56:1887-1891
• Federal Fiscal Year:
  2012
• Performing Organization:
  Harvard University School of Public Health
• Peer Reviewed:
  True
• Start Date:
  20070301
• Source Full Name:
  Proceedings of the Human Factors and Ergonomics Society 56th Annual Meeting, October 22-26, 2012, Boston, Massachusetts
• End Date:
  20120228
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:b277c0c346abe74b27ffa03a1071d82821f91900722464352e07e1bda3376f3f64771089587b6fe10c2b91939e115f80312fb5df3113e599e274349d25d3ac6e
• Download URL:
  https://stacks.cdc.gov/view/cdc/202728/cdc_202728_DS1.pdf
• File Type:
  [PDF - 760.16 KB ]