Maximum Acceptable Weight of Manual Load Carriage for Young Taiwanese Males

Abstract

This study examined the maximum acceptable weight of carriage (MAWC) for young Taiwanese males experienced in manual load carriage tasks. The elements of the examined load carriage tasks included lifting a box from the floor to the waist height, turning around while holding the box, carrying the box at the waist height for a distance, lowering the box to the floor, turning around, and walking unloaded back to the original position. Subjects performed the load carriage tasks over different levels of carriage distance, frequency, box width (sagittal dimension), and handle according to a response surface design. The results showed that subjects' MAWC decreased with carriage distance, frequency and box width, while heart rate and rate of perceived exertion (RPE) increased with carriage distance, frequency and box width. The MAWC for box with handles was on average 1.5 kg more than that for box without handles, while the effects of handle on heart rate and RPE were very trivial.

Are cutout handles used when available in real occupational settings? Description of grips and upper extremities movements during industrial box handling

“…In the present study the wrist and elbow movements were objectively evaluated in real occupational setting, however, no data is available from the older boxes (without cutouts) used in the company to compare boxes with and without cutout. Regarding general types of handles, it has long been recognized that the use of handles is advantageous to reduce extreme range of movements and increase the maximum acceptable weight of handling [4], suggesting that cutout boxes would also be comparatively favorable in comparison with boxes without handles.…”

“…In this context, the use of box handles has been accepted as a means of improving the hand/box coupling, in order to avoid extreme range of movements and increase the maximum acceptable weight of carriage [4]. However, very few boxes have handles and, when available, they were not always used [6].…”

Analisa Postur Pengendara Motor Untuk Evaluasi Dimensi Bagian Tempat Dudukan

“…Duduk lama dengan posisi yang salah dapat menyebabkan otot-otot punggung menjadi tegang dan dapat merusak jaringan lunak sekitarnya. Bila keadaan ini berlanjut, dapat menyebabkan penekanan pada bantalan saraf tulang belakang yang mengakibatkan hernia nukleus pulposus (Cheng and Lee, 2006) (Henny et al, 2012) (Laviere at al., 2009). Keluhan nyeri punggung bawah akan mulai dirasakan setelah 6 bulan, apabila pengendara sepeda motor secara rutin berkendara setiap hari minimal 2,5 jam (Sukarto, 2006).…”

Evaluation of reusable cardboard box designs: Biomechanical and perceptual aspects

“…The use of box handles has been accepted as a means of improving the hand/box coupling in order to avoid harmful ranges of movement (ROM) and increase the maximum acceptable weight of carriage (Stalhammar et al, 1989;Jung and Jung, 2003;Cheng and Lee, 2006). However, very few boxes have handles and, when available, they were not always used .…”