Manual handling techniques: Comparing novices and experts

Abstract The purpose of this study was to compare the techniques used by six expert handlers and six novices during a free handling task. Each subject had to transfer three sets of 16 boxes from a platform to a four-wheel cart. The observations dealt with the position of the subject at the beginning of transfer and at deposit (position of the back, knees and feet, pelvic orientation, position of the hands), his way of moving during the transfer (position of the feet) and his way of positioning and moving the box during handling (tilt). The results show that the expert handlers chose handling techniques rather different than those of the novices, particularly with regard to the position of the knees, feet and pelvis, the location of the grip, the movement of the feet during transfer, and the position of the box during handling. The study suggests that the strategies adopted by the experts would improve balance, and permit better control of the load and more efficient use of box momentum during transfer.

[1]  A Garg,et al.  Effects of lifting frequency and technique on physical fatigue with special reference to psychophysical methodology and metabolic rate. , 1979, American Industrial Hygiene Association journal.

[2]  C G Drury,et al.  Symmetric and asymmetric manual materials handling. Part 1: Physiology and psychophysics. , 1989, Ergonomics.

[3]  R D Huchingson,et al.  The effects of load knowledge on stresses at the lower back during lifting. , 1987, Ergonomics.

[4]  D. J. Wood,et al.  Design and Evaluation of a Back Injury Prevention Program Within a Geriatric Hospital , 1987, Spine.

[5]  Monique Lortie,et al.  The handling of objects other than boxes: univariate analysis of handling techniques in a large transport company. , 1995, Ergonomics.

[6]  Wang Wei,et al.  Evaluation of handle position — Comparison of psychophysical force/endurance and biomechanical criteria☆ , 1992 .

[7]  Colin G. Drury,et al.  A Survey of Industrial Box Handling , 1982 .

[8]  C G Drury,et al.  Symmetric and asymmetric manual materials handling, Part 2: Biomechanics. , 1989, Ergonomics.

[9]  Yu Ts,et al.  Low-back pain in industry. An old problem revisited. , 1984 .

[10]  M Lortie,et al.  Training in handling: an evaluative study. , 1989, Ergonomics.

[11]  R. Mostardi,et al.  Myoelectric Activity and Sequencing of Selected Trunk Muscles During Isokinetic Lifting , 1992, Spine.

[12]  M Lortie,et al.  Manual handling in warehouses: the illusion of correct working postures. , 1994, Ergonomics.

[13]  M Gagnon,et al.  Muscular mechanical energy expenditure as a process for detecting potential risks in manual materials handling. , 1991, Journal of biomechanics.

[14]  G M Hägg,et al.  Occupational lifting by nursing aides and warehouse workers. , 1989, Ergonomics.

[15]  A Mital,et al.  Patterns of differences between the maximum weights of lift acceptable to experienced and inexperienced materials handlers. , 1987, Ergonomics.

[16]  Don B. Chaffin,et al.  An evaluation of the effect of a training program on worker lifting postures , 1986 .

[17]  Wei Wang,et al.  Force distribution at the container hand/handle interface using force-sensing resistors , 1993 .

[18]  Karl H.E. Kroemer,et al.  Personnel training for safer material handling , 1992 .

[19]  Colin G. Drury,et al.  Optimum handle positions in a box-holding task. , 1982 .

[20]  Monique Lortie,et al.  Assessment of factors considered to be important in handling tasks by expert handlers , 1993 .

[21]  P Harber,et al.  Occupational back pain of nurses: Special problems and prevention. , 1988, Applied ergonomics.

[22]  S Kumar,et al.  The physiological cost of three different methods of lifting in sagittal and lateral planes. , 1984, Ergonomics.