Changes in trunk and spine biomechanics during repetitive fatiguing exertions

Author

Granata, K.P. ; Marras, W.S.

Author_Institution

Biodynamics Lab., Ohio State Univ., Columbus, OH, USA

fYear

1996

fDate

29-31 Mar 1996

Firstpage

439

Lastpage

442

Abstract

The objective of this study was to document trunk motions, muscle activity and spinal load during repetitive fatigueing lifting tasks. Ten warehouse employees transferred twelve pallets of 23 kg. boxes at a rate of 125 lifts per hour. Prior to transferring the load on each pallet, controlled “test” exertions were performed. Results from test exertions indicated lifts performed under more fatigued conditions were accomplished with greater pelvic flexion and reduced trunk angle. Compressive load on the spine decreased but shear loads increased significantly with fatigue. These findings may help explain how fatigue increases the risk of LED during repetitive lifting

Keywords

biomechanics; personnel; compressive load; lifts; muscle activity; pallets; pelvic flexion; reduced trunk angle; repetitive fatiguing exertions; repetitive lifting; shear loads; spine biomechanics; trunk biomechanics; trunk motions; warehouse employees; Acceleration; Area measurement; Biomechanics; Electromyography; Fatigue; Force measurement; Monitoring; Muscles; Musculoskeletal system; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Engineering Conference, 1996., Proceedings of the 1996 Fifteenth Southern

Conference_Location

Dayton, OH

Print_ISBN

0-7803-3131-1

Type

conf

DOI

10.1109/SBEC.1996.493270

Filename

493270