TY - JOUR
T1 - Mechanical loading of the low back and shoulders during pushing and pulling activities
AU - Hoozemans, Marco J.M.
AU - Kuijer, P. Paul F.M.
AU - Kingma, Idsart
AU - Van Dieën, Jaap H.
AU - De Vries, Wiebe H.K.
AU - Van Der Woude, Luc H.V.
AU - Veeger, Dirk Jan H.E.J.
AU - Van Der Beek, Allard J.
AU - Frings-Dresen, Monique H.W.
AU - de Vries, W.K.H.
PY - 2004/1/15
Y1 - 2004/1/15
N2 - The objective of this study was to quantify the mechanical load on the low back and shoulders during pushing and pulling in combination with three task constraints: the use of one or two hands, three cart weights, and two handle heights. The second objective was to explore the relation between the initial and sustained exerted forces and the mechanical load on the low back and shoulders. Detailed biomechanical models of the low back and shoulder joint were used to estimate mechanical loading. Using generalized estimating equations (GEE) the effects were quantified for exerted push/pull forces, net moments at the low back and shoulders, compressive and shear forces at the low back, and compressive forces at the glenohumeral joint. The results of this study appeared to be useful to estimate ergonomics consequences of interventions in the working constraints during pushing and pulling. Cart weight as well as handle height had a considerable effect on the mechanical load and it is recommended to maintain low. cart weights and to push or pull at shoulder height. Initial and sustained exerted forces were not highly correlated with the mechanical load at the low back and shoulders within the studied range of the exerted forces.
AB - The objective of this study was to quantify the mechanical load on the low back and shoulders during pushing and pulling in combination with three task constraints: the use of one or two hands, three cart weights, and two handle heights. The second objective was to explore the relation between the initial and sustained exerted forces and the mechanical load on the low back and shoulders. Detailed biomechanical models of the low back and shoulder joint were used to estimate mechanical loading. Using generalized estimating equations (GEE) the effects were quantified for exerted push/pull forces, net moments at the low back and shoulders, compressive and shear forces at the low back, and compressive forces at the glenohumeral joint. The results of this study appeared to be useful to estimate ergonomics consequences of interventions in the working constraints during pushing and pulling. Cart weight as well as handle height had a considerable effect on the mechanical load and it is recommended to maintain low. cart weights and to push or pull at shoulder height. Initial and sustained exerted forces were not highly correlated with the mechanical load at the low back and shoulders within the studied range of the exerted forces.
KW - Biomechanics
KW - Cart weight
KW - Exerted forces
KW - Handle height
KW - Initial forces
KW - Physical workload
KW - Sustained forces
UR - http://www.scopus.com/inward/record.url?scp=0842307207&partnerID=8YFLogxK
U2 - https://doi.org/10.1080/00140130310001593577
DO - https://doi.org/10.1080/00140130310001593577
M3 - Article
C2 - 14660215
SN - 0014-0139
VL - 47
SP - 1
EP - 18
JO - Ergonomics
JF - Ergonomics
IS - 1
ER -
