background: manual material handling is one of the major health and safety hazards in industry. this study aims to assess the lifting tasks, before and after intervention using niosh lifting equation and manual handling assessment charts (mac). methods: this interventional study was performed in 2011 in a tile manufacturing industry in hamadan, located in the west of iran. the prevalence of mus...

BACKGROUND Physical therapists working in the State of Kuwait are at risk of work-related musculoskeletal disorders (WMSDs). However, prevalence rates and risk factors are not well documented. The objective of this study was to determine the prevalence, characteristics, and impacts of WMSDs among physical therapists in the State of Kuwait. METHODS A self-administered questionnaire was distrib...

OBJECTIVES Work-related musculoskeletal disorders in the neck and shoulder regions are common among carpet weavers. Working for prolonged hours in a static and awkward posture could result in an increased muscle activity and may lead to musculoskeletal disorders. Ergonomic workstation improvements can reduce muscle fatigue and the risk of musculoskeletal disorders. MATERIAL AND METHODS The ai...

INTRODUCTION Despite the frequency of hand-held load carriage in many industrial settings, most research to date has focused primarily on packs as the means of load carriage. The Mover’s Assistive Device (MAD), developed in 2008 at Queen’s University in conjunction with local moving companies, is an on-body ergonomic aid designed to reduce musculoskeletal effort during hand-held load carriage. ...

introduction: work pressure and excessive workload can jeopardize and impair the people’s health. one of these impairments is musculoskeletal disorders. among these disorders, low back pain is the most common and most costly problem. the purpose of this study was to investigate the relationship between workload and prevalence of low back pain in assembly line workers of a car manufacturing fact...

Musculoskeletal models may enhance our understanding of the dynamic loading joints during manual material handling. This study used state-of-the-art musculoskeletal to determine effects load mass, asymmetry angle, horizontal location and deposit height on knees, shoulders lumbar spine lifting. Recommended weight limits lifting indices were also calculated using NIOSH equation. Based 1832 lifts ...

Development of artificial scaffold for musculoskeletal applications, especially in load-bearing situations, requires the consideration of biomechanical aspects for its integrity and its function. However, the biomechanical loading could also be used to favour tissue formation through mechano-transduction phenomena. Design of scaffold could take advantages of this intrinsic mechanical loading.

Weight gain and stretched abdominal muscles from an enlarged gravid uterus are remarkable features during pregnancy. These changes elicit postural instability and place strain on body segments, contributing to lower back pain. In general, the agonist and antagonist muscles act simultaneously to increase joint stabilization; however, this can cause additional muscle stress during movement. Furth...

Biomechanical analysis of human loco-motor system has been performed widely by applying rigid-body musculoskeletal models. This method enables to investigate the influence of muscle activation on body movements. Also, the finite element (FE) method enables the prediction of the internal forces and deformations. So, the musculoskeletal model and FE method are supplementary. At this point, integr...