Angular Momentum Regulation May Dictate the Slip Severity in Young Adults

Details

• Personal Author:
  Beschorner K ; Hur P ; Nazifi MM
• Description:
  Falls cause negative impacts on society and the economy. Slipping is a common initiating event for falling. Yet, individuals differ in their ability to recover from slips. Persons experiencing mild slips can accommodate the perturbation without falling, whereas severe slipping is associated with inadequate or slow pre- or post-slip control that make these individuals more prone to fall. Knowing the discrepancies between mild and severe slippers in kinematic and kinetic variables improves understanding of adverse control responsible for severe slipping. This study examined differences across these participants with respect to center of mass (COM) height, sagittal angular momentum (H), upper body kinematics, and the duration of single/double phase. Possible causality of such relationships was also studied by observing the time-lead of the deviations. Twenty healthy young adults performed walking trials in dry and slippery conditions. They were classified into mild and severe slippers based on their heel slipping speed. No inter-group differences were observed in the upper extremity kinematics. It was found that mild and severe slippers do not differ in the studied variables during normal gait; however, they do show significant differences through slipping. Compared to mild slippers, sever slippers lowered their COM height following a slip, presented higher H, and shortened their single support phase (p-value<0.05 for all). Based on the time-lead observed in H over all other variables suggests that failure to control angular momentum may influence slip severity. [Description provided by NIOSH]
• Subjects:
  Accidental Falls Accidents Accidents, Occupational Biomechanical Phenomena Occupational Health Safety
• Keywords:
  Biomechanics Injuries Injury Prevention Physiology Slips, Trips, And Falls STF Walking Surfaces Young Workers
• ISSN:
  1932-6203
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; OSHA Region 6 ; Pennsylvania ; Texas
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  15
• Issue:
  3
• NIOSHTIC Number:
  nn:20060052
• Citation:
  PLoS One 2020 Mar; 15(3):e0230019
• Contact Point Address:
  Pilwon Hur, Department of Mechanical Engineering, Texas A&M University, College Station, Texas
• Email:
  pilwonhur@tamu.edu
• Federal Fiscal Year:
  2020
• Performing Organization:
  University of Pittsburgh
• Peer Reviewed:
  True
• Start Date:
  20020801
• Source Full Name:
  PLoS One
• End Date:
  20110831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0315ab858cfc5f3f6812bc02ce23cca13ac3879db127425128e6f81979bf03ee0d160b029ceaabab4ee4d00471631df81711353b375fd3a6258f424026c013dc
• Download URL:
  https://stacks.cdc.gov/view/cdc/224085/cdc_224085_DS1.pdf
• File Type:
  [PDF - 1.23 MB ]