scholarly journals Postural Analysis on Manual Pine Resin Collecting Work: Lifting Index and L5/S1 Compression-Shear Forces

2021 ◽  
Vol 9 (3) ◽  
pp. 368-378
Author(s):  
Efi Yuliati Yovi ◽  
Nasruli Awaliyah
Keyword(s):  
Injury Risk ◽  
Material Handling ◽  
Three Dimension ◽  
Shear Forces ◽  
Manual Lifting ◽  
Prediction Program ◽  
Manual Material Handling ◽  
Lower Back ◽  
Psychophysical Analysis ◽  
Postural Analysis

Even though pine oleoresin harvesting is labor-intensive forestry work involving manual material handling (especially lifting) and is massively carried out in Indonesia, there is a lack of ergonomics studies on manual pine oleoresin harvesting. This study focused on lifting-related postures in pine oleoresin harvesting. A Three Dimension Static Strength Prediction Program Version 7.1.0 was used to identify the injury risk on the lower back (lumbosacral joint, L5/S1) using biomechanical criteria (compression and shear forces) at extreme postures. Recommended Weight Limit (RWL) and Lifting Index (LI) were calculated for a comprehensive analysis. The exceeding compression and shear forces indicated that the L5/S1 injury risk on oleoresin collecting work (part of oleoresin harvesting) is high. The psychophysical analysis confirmed the findings, as several main postures in this work were categorized as intense manual lifting due to the excessive score of LI.  A significant reduction in the L5/S1 compression and shear forces were shown at a simulation using a proposed load threshold (using the calculated RWL). Keywords: biomechanics, ergonomics, forestry work, manual lifting, oleoresin harvesting

scholarly journals Forces Loaded on the Back of Manual Material Handling Tasks' Workers of Food Industries in Malard Using"3D Static Strength Prediction Program”

2018 ◽  
Author(s):  
Sayedtaghi MIRMOHAMMADI ◽  
Ali GHOLIZADEH ABBASABAD ◽  
Seyednourddin MOUSAVINASAB ◽  
Seyed Esmaeil HOSSEINI NEJAD ◽  
Homira ALIZADEH
Keyword(s):  
Musculoskeletal Disorders ◽  
Material Handling ◽  
Physical Workload ◽  
Shear Forces ◽  
Manual Lifting ◽  
Food Industries ◽  
Prediction Program ◽  
Manual Material Handling ◽  
Lower Back

Introduction: Manual Material Handling tasks can cause fatigue in the short term and increase physical workload and musculoskeletal injuries in the long term. The present study was conducted to determine the amount of forces entered to the lower back in workers with manual material handling tasks.Methods: This descriptive-analytic study was conducted on 100 workers in food industries in Malard city in 2017. The Nordic questionnaire was used to determine the frequency of musculoskeletal disorders. The 3DSSPP was also applied to determine the amount of forces entered to the lower back of manual material handling tasks workers. Data analysis was conducted using SPSS (version 23)Results: we found that 24percent of workers had discomfort in at least one of their nine musculoskeletal muscles. The results of 3DSSPP showed that 30 and 34 percent of the compressive forces entered into L5/S1 and L4/L5 discs, respectively. In addition, the shearing force loaded on the L5/S1 disc was also found to be higher than the permissible limit eight percent of the participants. No significant relationship was found between the frequency of musculoskeletal disorders and the amount of compressive and shear forces entered to the lower back of workers.Conclusion: Based on NIOSH  recommended limits, the amount of compressive and shear forces entered to the lower back in 3DSSPP showed that in 30 percent of manual lifting load tasks, the risk of injury to the lower back was moderate and this risk was low in 70 percent of tasks.

scholarly journals Evaluasi Aktivitas Manual Material Handling dan Penerapan K3 Bagian Palletizing Kemasan Jerigen di PT. XYZ

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Kusnadi Kusnadi ◽  
Aulia Fashanah Hadining ◽  
Wahyudin Wahyudin
Keyword(s):  
Working Conditions ◽  
Material Handling ◽  
Manual Lifting ◽  
Work Attitude ◽  
Manual Material Handling ◽  
Lower Back ◽  
Risk Of Injury ◽  
Work Posture ◽  
Line Section ◽  
Heavy Loads

<span lang="EN">Production results that are handled manually are lifting the burden of jerry cans weighing 24 kg from the conveyor to the pallet. This removal process is risky for musculoceletal and can cause lower back pain. The appointment process takes place in the packing line section D. The purpose of this study is to determine the level of risk, find out the form of conveyor in accordance with working conditions and provide recommendations for corrective actions to be taken when the operator's work attitude has the risk of injury. The assessment of work posture is based on the assessment of RULA for each part (upper arm, forearm, wrist, wrist rotation, back, neck, and leg position) which are then categorized based on the results of the grand score on the action level indicating that the posture is required repair or not. The results of this study found that 3 workers for the grand score of work posture an average of 7 which indicates the need for action now. This is influenced by heavy loads with manual lifting</span>.

scholarly journals SPACE MAPPING OF HIP AND WRISTS MOTIONS FOR DIFFERENT TRANSFER DISTANCES IN MANUAL MATERIAL HANDLING TASK

2020 ◽  
Vol 21 (2) ◽  
pp. 164-176
Author(s):  
Radin Zaid Radin Umar ◽  
Fatin Ayuni Mohd Azli Lee ◽  
Muhammad Naqiuddin Khafiz ◽  
Nadiah Ahmad ◽  
Nazreen Abdullasim
Keyword(s):  
Material Handling ◽  
Space Mapping ◽  
Material Transfer ◽  
Repetitive Lifting ◽  
Manual Material Handling ◽  
Lower Back ◽  
Occupational Settings ◽  
Lifting Task ◽  
Transfer Tasks ◽  
Male Subjects

Manual material transfer tasks are common in occupational settings. Repetitive lifting tasks usually involve twisting and bending which are associated with occupational lower back injuries. One of the approaches to reduce bending and twisting is to separate the distance between lifting origin and destination, which will encourage lifters to step and turn entire bodies. However, adding lifting distances is likely to affect space usages and requirements. A study was conducted to investigate how the transfer distances influence space usage during the lifting task. Raw data of hip and hand wrists motion of 26 male subjects during transfer in 4 different distances were captured using X-Sens motion capture system. MVN Studio software was used to process and extract positional data. Tabulated space mapping revealed limited hip movement and semicircular shaped hand motions for short transfer distances. The pattern changes into a more stretched-curve shape as the distance increases. Overall, it was observed that shorter transfer distance caused participants to adopt more twisting and less bending postures, while further transfer distances resulted in more bending and less twisting. This study may provide industrial practitioners with information to design a space requirement for manual material transfer tasks. ABSTRAK: Kerja-kerja pemindahan barang secara manual adalah biasa dalam persekitaran kerja. Kerja-kerja mengangkat barang yang kebiasaannya melibatkan badan membengkok dan berpusing boleh menyebabkan kecederaan tulang belakang. Salah satu cara bagi mengurangkan risiko ini adalah dengan memisahkan jarak antara tempat asal dan tempat tuju pemindahan barang. Pemindah barang digalakkan untuk melangkah dan memusingkan seluruh badan. Namun, cara ini menyebabkan penggunaan ruang yang banyak. Satu kajian telah dijalankan bagi mengkaji bagaimana jarak pemindahan barang mempengaruhi penggunaan ruang ketika kerja-kerja pemindahan. Data asal pergerakan pinggul dan pergelangan tangan daripada 26 subjek lelaki ketika pemindahan barang pada 4 jarak berbeza diperolehi menggunakan sistem rakaman gerakan X-Sens. Perisian MVN Studio digunakan bagi memproses dan mengekstrak data ini. Ruang pemetaan berjadual mendedahkan pergerakan pinggul yang terhad dan pergerakan tangan berbentuk separa bulat pada jarak pemindahan terdekat. Corak ini berubah kepada bentuk lengkung memanjang apabila jarak bertambah. Keseluruhannya, jarak pindahan yang kurang menyebabkan para peserta lebih terdedah kepada postur memusingkan badan berbanding membengkok, sementara jarak yang jauh menyebabkan peserta lebih membengkok berbanding memusingkan badan. Kajian ini memberikan maklumat untuk penggiat industri mereka cipta keperluan ruang bagi kerja-kerja pemindahan barang secara manual.

scholarly journals Reviewing interventions to enhance comfort and productivity of workers in Enterprises

2020 ◽  
Vol 15 (2) ◽  
pp. 419-423
Author(s):  
Ekta Melkani ◽  
Kiran Singh ◽  
Manju Mehta
Keyword(s):  
Musculoskeletal Disorders ◽  
Material Handling ◽  
Small Scale ◽  
Upper Limbs ◽  
Manual Material Handling ◽  
Lower Back ◽  
Ergonomic Interventions

The following study deals with the detailed reviews regarding the interventions that have been done globally in the sector of entrepreneurial interventions in aspect of work simplification. Various standards hence can be considered while referring to different designs for enterprises, especially small scale enterprises. The studies have revealed the musculoskeletal disorders from manual material handling (MMH) works often involving strains and sprains to the lower back, shoulders, and upper limbs. The ergonomic interventions are found to give comfort to the workers in various postures. It is concluded that the design of the system must be incorporating to the worker, equipment, and environment as a whole.

scholarly journals Biomechanical workload during manual lifting: A case study on seaport stevedores in Colombia

2019 ◽  
Vol 18 (4) ◽  
pp. 71-80
Author(s):  
Luis A. Saavedra-Robinson ◽  
VickyL. Mendoza F ◽  
Sady Pacheco-Romero
Keyword(s):  
Material Handling ◽  
Musculoskeletal Discomfort ◽  
Manual Lifting ◽  
Work Related ◽  
Biomechanical Loading ◽  
Manual Material Handling ◽  
Compound Method ◽  
High Level ◽  
Niosh Lifting Equation

Workload related to material handling is one of main biomechanical risks that cause work related musculoskeletal disorderat work. The aim of this study wasto assess the risk factors for biomechanical loading present at carried out tasks by port stevedores. First, we made a diagnosis using the risk assessment matrix (RAM) then; we evaluated the biomechanical risk using the NIOSH lifting equation (Compound method). The results were a high level of unacceptable risk at the beginning and at the end of the task (scored 4.22 and 8.50 respectively). Subsequently, we made a correlation analysis between this scored and the musculoskeletal discomfort perceived by stevedores. From this analysis, it is evident that there is a direct relation between lifting vertical distance, trunk torsion, and the increase of musculoskeletal lesions suffered by the dockers. Finally, we proposed some methods to improve the activities of filling and emptying containers and minimize the manual material handling.

scholarly journals Ergonomic Checkpoint in Agriculture, Postural Analysis, and Prevalence of Work Musculoskeletal Symptoms among Indonesian Farmers: Road to Safety and Health in Agriculture

2018 ◽  
Vol 20 (1) ◽  
pp. 1-10
Author(s):  
Ari Widyanti
Keyword(s):  
High Risk ◽  
Material Handling ◽  
Safety Information ◽  
Developed Countries ◽  
Musculoskeletal Symptoms ◽  
Entire Body ◽  
Land Clearing ◽  
Prediction Program ◽  
Safety And Health ◽  
Postural Analysis

Agriculture is one of the most crucial and hazardous sectors in both the developing and the developed countries. The agriculture area has a various problem related to safety and health, calling an urgent research to solve the problem. The purpose of this study is to apply ergonomics checkpoint in agriculture (developed by ILO) in Indonesian as well as to observe the prevalence of musculoskeletal symptoms among Indonesian farmers.251 Indonesian farmers participate voluntarily in this study. “Ergonomic checkpoint in agriculture” as a tool to reduce agriculture-related accident and increase productivity is assessed by student researcher. Prevalence of musculoskeletal symptoms (MSS) is assessed using Nordic body map that is filling out by participants. Rapid Upper Limb Assessment (RULA), Rapid Entire Body Assessment (REBA), and postural analysis using 3 dimension Static Prediction Program (3D SSPP) are applied to observe the risk activities of Indonesian farmers including the manual hoe for land clearing, grass cutting for land clearing, planting the rice, manual plow, giving fertilizer, harvesting, threshing, cleaning the rice from the straw, and sun-drying of rice. According to ergonomics checkpoints, material handling and storage are the worst in Indonesian agriculture, coupled with minimum safety information, toilet and washing facilities, and first aid. The high-risk activities are manual hoe for land clearing, manual plow, grass cutting for land clearing and threshing. The reported MSS mainly found in the shoulder and lower back.In conclusion, Indonesian agriculture is in a poor ergonomics condition and is associated with high musculoskeletal symptoms. The postural analysis also reveals a high risk of farmer activities.

Age related differences in mechanical demands imposed on the lower back by manual material handling tasks

2016 ◽  
Vol 49 (6) ◽  
pp. 896-903 ◽  
Author(s):  
Iman Shojaei ◽  
Milad Vazirian ◽  
Emily Croft ◽  
Maury A. Nussbaum ◽  
Babak Bazrgari
Keyword(s):  
Material Handling ◽  
Manual Material Handling ◽  
Lower Back ◽  
Age Related

Pre-Exertion Perceptions of Musculoskeletal Overexertion Injury Risk: An Assessment of Age, Gender, Anthropometric, and Lifting Task Factors

2007 ◽  
Vol 51 (1) ◽  
pp. 50-54
Author(s):  
Steven F. Wiker ◽  
Viviana Baggio
Keyword(s):  
Perceived Risk ◽  
Injury Risk ◽  
Material Handling ◽  
Estimation Methods ◽  
Materials Handling ◽  
Manual Material Handling ◽  
Manual Materials Handling ◽  
History Of ◽  
Lifting Task ◽  
Or History

Manual materials handling safety training programs typically encourage workers to make judgments regarding manual material handling risk prior to making attempts to perform the task. The objectives of this effort were to determine if: a) perceptions of MMH tasks are consistent with consensus-based lifting hazards, and b) judgments are materially affected by observer age and or gender. Photographs of orthogonally varied levels of horizontal and vertical origin and final position of a 20 Kg box lift at 0.2, 2 and 5 lifts per minute were presented to 50 males and 50 females who were distributed among age decades between 20 and 70 years. Subjects were asked to rate their perceived risk of musculoskeletal injury using magnitude estimation methods. Results showed that subjects, regardless of age, were unable to spatially perceive consensus-based biomechanical indexes of musculoskeletal hazard; this finding held regardless of age group, gender, stature, body mass, prior safe lifting practices training, or history of low back injury.

scholarly journals Analysis of manual material handling activity to increase work productivity (Case study: manufacturing company)

2018 ◽  
Vol 154 ◽  
pp. 01085 ◽  
Author(s):  
Muhammad Ragil Suryoputro ◽  
Khaerul Wildani ◽  
Amarria Dila Sari
Keyword(s):  
Musculoskeletal Disorders ◽  
Material Handling ◽  
Manufacturing Industry ◽  
Work Productivity ◽  
Physical Aspect ◽  
Time Study ◽  
Study Analysis ◽  
Productivity Measurement ◽  
Manual Lifting ◽  
Manual Material Handling

Manual material handling is one of work activities that have an effect on the physical aspect of workers in manufacturing industry, it is necessary to do the analysis of the risks from such activities. Analysis was performed on worker when performing manual lifting activity and when using two tools (Automatic Handlift and Manual Handlift). In addition to analyse in ergonomics aspect, time study analysis and productivity measurement were carried out to determine the effects of the equipment. Nordic Body Map (NBM) questionnaire on worker using Automatic Handlift showed declining level of musculoskeletal disorders by 22%. REBA method obtained score of 10 and was declined to 4 after using these tool. The results of MPL method showed declining of Fc value from 4756.37 N to 1346.56 N. The results of RWL method showed declining of LI value (Lifting Index) origin and destination from 1.84 and 1.18 to 1.12 and 0.89 respectively. As for worker using Manual Handlift, NBM questionnaire result shows declining level of musculoskeletal disorders by 57%. REBA method obtained scores of 8 and was reduced to 5. For MPL methode result, the Fc value is 4906.99 N and reduced to 2047.88 N. RWL method results showed declining of LI value (Lifting Index) origin and destination from 1.02 and 0.67 to 0.74 and 0.58. The results of time study analysis showed declining of Standard Time when use the two tools and make the increasing productivity of 9% by worker using Automatic Hadlift and 4% by worker using Manual Handlift.

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