Postural control during lifting

Any voluntary motion of the body causes an internal perturbation of balance. Load transfer during manual material handling may increase these perturbations. This study investigates effects of stance condition on postural control during lifting. Nineteen healthy subjects repeatedly lifted and lowered...

Full description

Saved in:
Bibliographic Details
Published in:Journal of biomechanics 2002-05, Vol.35 (5), p.585-594
Main Authors: Kollmitzer, J., Oddsson, L., Ebenbichler, G.R., Giphart, J.E., DeLuca, C.J.
Format: Article
Language:English
Subjects:
Adult
Balance
Biomechanical Phenomena
Center of mass (COM)
Center of pressure (COP)
Humans
Leg - physiology
Lifting
Male
Manual material handling
Middle Aged
Perturbation
Postural Balance - physiology
Posture - physiology
Weight-Bearing - physiology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Any voluntary motion of the body causes an internal perturbation of balance. Load transfer during manual material handling may increase these perturbations. This study investigates effects of stance condition on postural control during lifting. Nineteen healthy subjects repeatedly lifted and lowered a load between a desk and a shelf. The base of support was varied between parallel and step stance. Ground reaction force and segmental kinematics were measured. Load transfer during lifting perturbed balance. In parallel stance postural response consisted of axial movements in the sagittal plane. Such strategy was accompanied by increased posterior shear forces after lift-off. Lifting in step stance provided extended support in anterior/posterior direction. The postural control mechanisms in the sagittal plane are less complex as compared to parallel stance. However, lifting in step stance was asymmetrical and thus accompanied by distinct lateral transfer of the body. Lateral shear forces were larger as compared to parallel stance. Both lifting techniques exhibit positive and negative aspects. We cannot recommend either one as being better in terms of postural control.
ISSN:0021-9290
1873-2380
DOI:10.1016/S0021-9290(01)00238-X