The adaptations to fatigue during a repetitive lifting test

Author

Sparto, Patrick J. ; Parnianpour, Mohamad ; Reinsel, Tom E. ; Simon, Sheldon R.

Author_Institution

Biomed. Eng. Center, Ohio State Univ., Columbus, OH, USA

fYear

1996

fDate

29-31 Mar 1996

Firstpage

195

Lastpage

196

Abstract

Twelve subjects performed a fatiguing repetitive lift in the sagittal plane until exhaustion to discover the effect of fatigue on changes in kinematics, postural stability, and coordination. A load equal to 25% of the subjects´ isoinertial lifting capacity was repetitively lifted and lowered at a maximal lifting rate from mid-tibia to waist height. Knee and hip range of motion were significantly decreased, while peak trunk flexion increased at the end of the task. Postural stability decreased and subjects extended their knee, hip and spine earlier in the lifting phase, at the end of the task. Some of these adaptations are indicative of mechanisms that may cause increased loading of the passive tissues of the spine and hence increased risk of injury, while others need to be investigated further

Keywords

biomechanics; ergonomics; kinematics; adaptations; coordination; exhaustion; fatigue; fatiguing repetitive lift; hip range of motion; injury risk; isoinertial lifting capacity; kinematics; knee range of motion; load; low back pain; maximal lifting rate; mid-tibia; passive tissues; peak trunk flexion; postural stability; repetitive lifting test; sagittal plane; spine; waist height; Back; Biomedical engineering; Fatigue; Hip; Injuries; Knee; Orthopedic surgery; Pain; Stability; 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.1996.493147

Filename

493147