Details:

Alternative Title:
Ergonomics
Publisher's site:
http://dx.doi.org/10.1080/00140139.2012.693627
Personal Author:
Xu, Xu ; Chang, Chien-Chi ; Lu, Ming-Lun ;
Xu, Xu ; Chang, Chien-Chi ; Lu, Ming-Lun ; Less -
Description:
Previous studies have indicated that cumulative L5/S1 joint load is a potential risk factor for low back pain. The assessment of cumulative L5/S1 joint load during a field study is challenging due to the difficulty of continuously monitoring the dynamic joint load. This study proposes two regression models predicting cumulative dynamic L5/S1 joint moment based on the static L5/S1 joint moment of a lifting task at lift-off and set-down and the lift duration. Twelve men performed lifting tasks at varying lifting ranges and asymmetric angles in a laboratory environment. The cumulative L5/S1 joint moment was calculated from continuous dynamic L5/S1 moments as the reference for comparison. The static L5/S1 joint moments at lift-off and set-down were measured for the two regression models. The prediction error of the cumulative L5/S1 joint moment was 21 ± 14 Nm × s (12% of the measured cumulative L5/S1 joint moment) and 14 ± 9 Nm × s (8%) for the first and the second models, respectively. Practitioner Summary: The proposed regression models may provide a practical approach for predicting the cumulative dynamic L5/S1 joint loading of a lifting task for field studies since it requires only the lifting duration and the static moments at the lift-off and/or set-down instants of the lift.
Subject:
[+]
Analysis Of Variance
Article
Biomechanical Phenomena
Cumulative L5/S1 Moment
Female
Humans
Imaging, Three-Dimensional
Lifting
Linear Models
Low Back Pain
Lumbar Vertebrae
Male
Manual Materials Handling
Middle Aged
Models, Anatomic
Posture
Sacrum
Static Moment
Statistics As Topic
Task Performance And Analysis
Weight-Bearing
Low Back Pain

Source:
Ergonomics. 55(9):1093-1103.
Pubmed ID:
22803616
Pubmed Central ID:
PMC4690458
Document Type:
Journal Article ;
Funding:
CC999999/Intramural CDC HHS/United States ;
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:02160acb6f5e10dfd9b64a8553d5ef56d7af71ec557ae071de017783a71709d5
File Type:

Supporting Files

• 	nihms-740858.nxml	bin
  	nihms-740858-f0001.gif	gif
  	nihms-740858-f0001.jpg	jpeg
  	nihms-740858-f0002.gif	gif
  	nihms-740858-f0002.jpg	jpeg
  	nihms-740858-f0003.gif	gif
  	nihms-740858-f0003.jpg	jpeg
  	nihms-740858-f0004.gif	gif
  	nihms-740858-f0004.jpg	jpeg

More +