EFFECT OF SHIP MOTION ON LOW BACK MOMENTS DURING MANUAL LIFTING

2007 ◽  
Vol 40 ◽  
pp. S29
Author(s):  
G.S. Faber ◽  
I. Kingma ◽  
N.J. Delleman ◽  
J.H. van Dieën
Keyword(s):  
Ship Motion ◽  
Low Back ◽  
Manual Lifting

scholarly journals The Risk Assessment of Low Back Pain Based on Allowable Weight Limits for Manual Lifting in Iranian Women Workers

2020 ◽  
Vol 12 (3) ◽  
Author(s):  
Davood Afshari ◽  
Maryam Mojaddam ◽  
Maryam Nourollahi
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Women Workers ◽  
Musculoskeletal Disorders ◽  
Cross Sectional Study ◽  
Low Back ◽  
Iranian Women ◽  
Cross Sectional ◽  
Manual Lifting ◽  
Occupational Low Back Pain

Background: Manual load lifting is one of the most important risk factors for musculoskeletal disorders, including occupational low back pain. These disorders are common in women workers who perform manual load lifting and displacement tasks at the workplace. Objectives: To determine the level of musculoskeletal disorders and to evaluate the recommended limits of manual load lifting in women workers using WISHA checklist and ACGIH TLV, the recommended limits of Iran, and compare the results of two methods. Methods: This cross-sectional study was conducted on 100 women workers who performed manual loading tasks in 2018. Nordic questionnaire was used to determine the prevalence of musculoskeletal disorders, and two methods, WISHA checklist and ACGIH TLV, were used to determine the recommended allowable limits for manual load lifting. Results: The results of the prevalence assessment of musculoskeletal disorders showed that most of the musculoskeletal disorders were in the low back (55%) in the past 12 months. The results of the assessment of the allowable lifting limits also showed that 8% of women in the WISHA checklist method and 31% in the ACGIH TLV method were at risk for low back injuries. The kappa coefficient test (0.031) also showed that there is a poor and insignificant agreement between the two methods of WISHA checklist and ACGIH TLV in determining the allowable limits for manual lifting. Conclusions: The results of this study showed a poor agreement between the WISHA checklist and ACGIH TLV in determining the allowable limits for manual lifting, which suggest that the two methods are not mutually exclusive. Hence, owing to the increasing presence of women in various occupations and raising the hand load-lifting and, naturally increasing occupational low back pain among them, it is necessary that in a comprehensive study, the allowable limits of lifting loads according to anthropometric and physiological characteristics of Iranian women, prepare and compile according to a comprehensive instruction.

Relationships between the NIOSH (1991) Lifting Index, Compressive and Shear Forces on the Lumbosacral Joint, and Low Back Injury Incidence Rate Based on Industrial Field Study

1994 ◽  
Vol 38 (10) ◽  
pp. 654-657 ◽  
Author(s):  
Waldemar Karwowski ◽  
Marenda Caldwell ◽  
Paul Gaddie
Keyword(s):  
Regression Models ◽  
Incidence Rates ◽  
Back Injury ◽  
Injury Incidence ◽  
Strong Positive Correlation ◽  
Low Back ◽  
Shear Forces ◽  
Manual Lifting ◽  
Low Back Injury ◽  
Manual Handling

The main objective of this study was to investigate relationships between the values of NIOSH (1991) Lifting Index calculated for as set of industrial manual handling tasks, the corresponding (estimated) compressive and shear forces on the lumbosacral joint (L5/S1), and the back injury incidence rates based on analysis of the epidemiological field data. A strong positive correlation was observed between the estimated compressive forces on L5/S1 and the lifting index (LI) values, and between the incidence rates (IR) of low back injury and the LI index. Two sets of regression models describing the relationships between the lifting index (LI) and the compressive forces on the L5/S1 were developed. It was shown that the LI=1.0 corresponds to about 1.8 kN and 2.4 N of compression on the L5/S1, for the destination and origin of the lift, respectively. For the lumbar compressive strength values (with safety factor of one standard deviation) of 4.1 kN for males (40 years of age), proposed by Jager and Luttman (1992), the corresponding values of the lifting index are as follows: LI=4.1 (for the lift destination) and 6.4 (for the lift origin). Implications of results for prevention of back injury due to manual lifting were discussed.

scholarly journals ERGONOMIC ASSESSMENT OF MANUAL BUILDING WORK ASSOCIATED WITH LIFTING TASKS/RANKŲ DARBO STATYBOJE, KELIANT MAŽAGABARIČIUS SUNKIUS ELEMENTUS, ERGONOMINIS VERTINIMAS

2001 ◽  
Vol 7 (5) ◽  
pp. 370-373
Author(s):  
Kazys Algirdas Kaminskas
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Low Back ◽  
Work Injuries ◽  
Back Injuries ◽  
Manual Lifting ◽  
Pneumatic Device ◽  
Heavy Construction ◽  
Porous Silicate ◽  
Positive Effect

The purpose of these studies is to reduce the amout of low back pain as well as work injuries. Low back pain is more likely to occur if the load exceeds the worker's physical capabilities. In this paper, biomechanical criterion was based on calculating the compressive forces in the L5/S1 disc (Eqs (1), (2)). Three types of activity were taken into consideration. First, manual lifting granite plates (500× 500× 100 mm) with and without special devices (Figs 1, 2). Second manual lifting porous silicate blocks (300 × 600 × 200 mm). Third, manual lifting silicate brick in stooped postures. The investigation results presented in Fig 6 show clear benefits of ergonomic solutions for manual lifting heavy construction elements. The risk for back injuries becomes quite insignificant when ergonomic lifting devices are used (Fig 6 point f and g). These devices do not reduce the weight of lifted elements, but in case of a pneumatic device the total lifting weight is considerably increased, but the positive effect is achieved due to reducing moments because workers perform the task with a straight back. The reloaders of bricks usully feel back pain due to extreme repetitive bending of the back.

A Catastrophe Theory-Based Model for Quantification of Risk of Low Back Disorders at Work

1993 ◽  
Vol 37 (10) ◽  
pp. 683-687 ◽  
Author(s):  
Waldemar Karwowski ◽  
William S. Marras
Keyword(s):  
Musculoskeletal System ◽  
Catastrophe Theory ◽  
Dynamic Equilibrium ◽  
Cusp Catastrophe ◽  
Low Back ◽  
Dynamic Changes ◽  
Manual Lifting ◽  
Back Disorders ◽  
Low Back Disorders ◽  
Catastrophe Models

This paper discusses applications of the catastrophe theory in the dynamic modeling of occupational low back disorders, and offers a framework for conceptualization of such disorders in view of the elementary cusp catastrophe models. It was proposed that low back disorders due to manual lifting should be considered as a discontinuous phenomenon, reflecting dynamic changes in the state of human musculoskeletal system, which are dependent upon the combination of human strength abilities, muscular fatigue and endurance, spinal loading tolerance, as well as dynamic equilibrium between these variables. The behavior of the proposed cusp-catastrophe based model for the risk of LBDs due to manual lifting jobs was examined based on empirical data collected in industry.

Effect of ship motion on spinal loading during manual lifting

Ergonomics ◽  
2008 ◽  
Vol 51 (9) ◽  
pp. 1426-1440 ◽  
Author(s):  
Gert S. Faber ◽  
Idsart Kingma ◽  
Nico J. Delleman ◽  
Jaap H. van Dieën
Keyword(s):  
Ship Motion ◽  
Manual Lifting ◽  
Spinal Loading

Characteristics of manual lifting activities in the patients with low-back pain

2002 ◽  
Vol 29 (2) ◽  
pp. 101-106 ◽  
Author(s):  
Yang-Hua Lin ◽  
Chen-Sheng Chen ◽  
Wen-Jer Chen ◽  
Cheng-Kung Cheng
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Low Back ◽  
Manual Lifting
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