Ergonomic Aspects Research Articles

Differential Degradation of Wooden Cutting Boards and Ergonomic Aspects of Beef and Chevon Marketing in Port Harcourt, Nigeria

Abstract Although wood degradation and ergonomics are critical design issues in the wood product industry worldwide, data on wood as a degradable and culturally important material for cutting meat and the ergonomics of meat marketing in urban Nigerian markets are unavailable. This study investigated the degradation of wooden cutting boards (WCB) caused by meat cutting and marketing ergonomics. Degradation was estimated using eight WCB administered to four participants marketing chevon and four participants marketing beef. Descriptive and anthropometric data were obtained from 129 participants using questionnaires and measurements. The degradation results showed that after three months, cutting meat caused a significant monthly average WCB loss of 19.6 ± 4% and 11.6 ± 4% and a cumulative weight loss of 58.17% and 34.72% for chevon and beef, respectively. A substantial number of meat marketers were found to work in awkward postures, especially in the upper extremity mismatched condition, where they potentially exert more force, resulting in contact between the cutting tools and WCB that degrades the cutting board during meat cutting. Therefore, mismatched working conditions are a feasible and heightened factor contributing to wood degradation during meat cutting and marketing. The results can help people gain a deeper understanding of wood degradation from commercial meat cutting and the ergonomics of meat marketing and provide strategies for ensuring a sustainable supply of high-quality wood and improving ergonomic conditions.

ESTRATÉGIAS DE CONFORTO AMBIENTAL PARA QUADRAS FECHADAS VOLTADAS A ESPORTES DE ALTO RENDIMENTO

Sports architecture, with its particularities, is essential to optimize the efficiency of environments, considering the specific needs of each sport. This article addresses environmental comfort strategies applied to indoor courts intended for high-performance sports, highlighting the importance of an architecturally planned environment to ensure the well-being of athletes and optimize their performance. The study focuses on thermal, visual, acoustic and ergonomic aspects, and analyzes how each of these factors influences sports performance. In addition, it explores the interaction between the body and the physical environment, proposing solutions that favor the creation of functional and comfortable spaces for sports practice and competitive events. The research, of a bibliographic and exploratory nature, brings together concepts of environmental psychology and athletic performance, in addition to highlighting the construction strategies of ventilation, lighting and acoustic control that can be applied to indoor courts with the aim of promoting human well-being. The work proposes solutions so that sports centers offer adequate conditions for sports practice, supporting the creation of environments that favor both the satisfaction and the enhancement of the performance of athletes. From this study, it is possible to define the importance of the preparation and competition environment in the performance of high-performance athletes, and architecture, linked to environmental comfort, is shown to be a tool for the development of these spaces, essential for success in national and international sports competitions.

Development and experimental validation of a 3D numerical model to investigate performance of phase change based cooling vest in hot environments

To ensure health and safety of outdoor workers exposed to harsh environment, particularly during summer, they must be protected against heat-related injuries. Personal cooling device like cooling vest are viable solution in such situations considering their cooling capabilities and ergonomic aspects. In the present study, a 3D numerical model is developed for analyzing performance of PCM vest and it is validated with experimental results obtained from a torso thermal manikin facility fabricated in-house. Thermal performance of the PCM vest is analyzed in terms of temperature, liquid fraction and energy storage of PCM and skin temperature for different thermophysical properties of PCM, ambient conditions and mode of operations. Based on the study, PCM with higher latent heat and melting temperature is recommended for the longer working duration of the vest. Increasing ambient temperature from 40 °C to 45 °C reduces the effectiveness time by 20 % while decreasing ambient temperature from 40 °C to 35 °C increases effectiveness time of the PCM vest by 32 %. Fraction of energy stored by the PCM from the body and environment remains unaffected by the change in the latent heat of PCM. Further, it is noticed that increasing the air flow rate or using the PCM vest in hybrid mode of operation is not recommended from the point of view of its effective useable duration. Overall, the study presents a comprehensive approach to estimate performance of the PCM vest realistically and provides guidelines for the design of effective cooling vest for various practical applications.

Worker-centered evaluation and redesign of manufacturing tasks for ergonomics improvement using axiomatic design principles

Humans are considered the most valuable resource in manufacturing systems thanks to their craftsmanship, dexterity, and autonomy significantly affecting productivity, quality, and the overall company competitiveness. This paper introduces the SAGE (Systematic Approach to Generating Ergonomic Manufacturing tasks) methodology, a structured approach based on Axiomatic Design principles to integrate Human Factors evaluation early in the operations design phase and redesign manufacturing tasks to improve operators well-being. The primary objective is to mitigate discomfort and safety risks that often lead to musculoskeletal disorders, absenteeism, and production delays. SAGE provides a comprehensive framework for assessing ergonomic aspects of manufacturing tasks and identifying the need for redesign. It offers a detailed set of Functional Requirements (FRs) for reference, assesses FR satisfaction, evaluates task complexity using the Independence Axiom, and examines the intensity of FR satisfaction through the Information Axiom. The methodology includes specific implementation guidelines, ensuring its applicability across diverse manufacturing contexts. Its effectiveness is demonstrated through a large-scale parts assembly case study inspired by the bus and coach industrial sector, where a production engineer evaluated a windows assembly task and identified ergonomic design interventions. A comparative analysis with other relevant methods is finally presented, highlighting the approach's effectiveness.

The effect of squats on muscle activity in standing, kneeling, and half-kneeling positions: A cross-sectional study.

Kneeling and half-kneeling training are common positions used in physical therapy. however, research on lower extremity muscle activity is lacking compared to the ergonomic aspects and trunk muscle activity. The purpose of this study is to investigate the effects on lower extremity muscle activity during squats in kneeling and half-kneeling positions. The study was designed as a cross-sectional study with a single group of healthy adults. Participants were instructed to perform squats while assuming 3 positions (standing, kneeling, and half-kneeling). Surface electromyography data were recorded 3 times from the rectus femoris (RF), gluteus maximus (GMax), gluteus medius (GMed), and biceps femoris (BF) on the participant's dominant side, and the mean values were analyzed. The participants performed squats for 9 seconds, with 4 seconds of the descent phase, 1 second of the maintenance phase, and 4 seconds of the ascent phase. A metronome was used to ensure precise timing. The study included 30 participants (19 males and 11 females). The muscle activities of the RF, GMed, and BF showed statistically significant differences among the 3 positions, being highest in the half-kneeling position (HKP), followed by the standing position (SP) and kneeling position (KP). The muscle activity of the GMax was significantly higher in the HKP than in the SP and KP (P < .05). The co-contraction ratio was significantly higher with KP than with the SP and HKP (P < .05). In the SP and KP, there were statistically significant differences between the ascent and descent phases of the RF, GMax, GMed, and BF (P < .05). In the HKP, there were statistically significant differences between the ascent and descent phases of the RF, GMax, and GMed (P < .05). The results of this study indicate that squats in the HKP (especially during the ascent phase) require the highest muscle activity, whereas squats in the KP (especially during the descent phase) can be performed with the lowest muscle activity. It can be concluded that these findings could serve as selective indicators for squat exercises and in enhancing postural control, muscle strength, and lower extremity stabilization.

Engineering ergonomic risk assessment of karate choku zuki straight punch

This study utilizes the Rapid Upper Limb Assessment (RULA) technique to evaluate suggested improvements aimed at enhancing the safety and efficacy of the Choku Zuki (Straight Punch), a high-risk karate exercise. The primary objective is to identify and address potential musculoskeletal issues associated with this technique. Given the prevalence of musculoskeletal injuries in sports, particularly in activities with high intensity like karate, the need for reliable ergonomic risk assessment tools such as RULA is paramount. By applying RULA to analyze the ergonomic aspects of the Choku Zuki punch, this study provides crucial insights into potential areas of concern. It identifies specific postures and movements that may predispose practitioners to injury, allowing for the development of targeted interventions to mitigate risks and enhance safety. Furthermore, this research underscores the importance of integrating ergonomic considerations into sports training regimens to optimize performance and minimize injury risks. Beyond its implications for karate training, the study emphasizes the broader significance of ergonomic assessments in sports science and engineering. It showcases how engineering methodologies can be leveraged to improve the safety, efficiency, and overall performance of sporting activities, fostering collaboration between sports scientists, engineers, athletes, coaches, and healthcare professionals to advance sports performance and safety standards.lities.

Pemilihan komponen dan pembuatan alat destilasi minyak sereh dengan kapasitas 10 kg

This research aims to design and manufacture a citronella oil distillation device with a capacity of 10 kg. The component selection process involves analysis of various factors such as efficiency, cost, material availability, and ease of maintenance. The main components selected include extraction tubes, condensers and heating systems. Choosing the right material, such as stainless steel for corrosion resistance, is one of the main focuses to ensure tool durability. The design of this distillation tool takes into account aspects of ergonomics and user safety. The manufacturing process involves several stages, starting from detailed design, material procurement, to assembling and testing the equipment. The test results show that this distillation equipment is capable of producing lemongrass oil with quality that meets standards, as well as better time efficiency compared to traditional methods. Thus, it is hoped that this distillation equipment can increase lemongrass oil production, especially for farmers and small and medium industries.

Engineering Ergonomic Risk Assessment of Karate Choku Zuki Straight Punch

This study utilizes the Rapid Upper Limb Assessment (RULA) technique to evaluate suggested improvements aimed at enhancing the safety and efficacy of the Choku Zuki (Straight Punch), a high-risk karate exercise. The primary objective is to identify and address potential musculoskeletal issues associated with this technique. Given the prevalence of musculoskeletal injuries in sports, particularly in activities with high intensity like karate, the need for reliable ergonomic risk assessment tools such as RULA is paramount. By applying RULA to analyze the ergonomic aspects of the Choku Zuki punch, this study provides crucial insights into potential areas of concern. It identifies specific postures and movements that may predispose practitioners to injury, allowing for the development of targeted interventions to mitigate risks and enhance safety. Furthermore, this research underscores the importance of integrating ergonomic considerations into sports training regimens to optimize performance and minimize injury risks. Beyond its implications for karate training, the study emphasizes the broader significance of ergonomic assessments in sports science and engineering. It showcases how engineering methodologies can be leveraged to improve the safety, efficiency, and overall performance of sporting activities, fostering collaboration between sports scientists, engineers, athletes, coaches, and healthcare professionals to advance sports performance and safety standards.lities.

Emerging occupational risks in green jobs: a review.

Green jobs are to be understood as those jobs directly associated with specific sustainability issues and activities related to the efficiency, quality and innovation of goods and services offered, from an eco-sustainability perspective. The objective of the research was to fill knowledge gaps of new and emerging environmental and occupational risks related to sustainable activities and to understand the impact these might have on workers' psychological and physical well-being. A selection of several scientific articles and a critical analysis of the selected articles was carried out from the perspective of defining the concept of "emerging occupational risks in green jobs," using different keywords in the title or abstract as search criteria. Emerging occupational risks, most prevalent in the green sector are those determined by the rapid introduction of new technologies, new materials, new processes and work organizations. In order to be able to improve prevention and protection at work, it is necessary to act on a more careful and adequate risk assessment, the definition of new professional figures expert in green issues, the expansion of research and development of scientific knowledge, and the improvement of ergonomic aspects. Int J Occup Med Environ Health. 2024;37(3):244-56.

Ergonomic assessment of mid-air interaction and device-assisted interactions under vibration environments based on task performance, muscle activity and user perceptions

Mid-air interaction has been increasingly introduced for human-computer interaction (HCI) tasks in vibration environments, but it has seldom been assessed from ergonomic aspects, especially in comparison with device-assisted interactions. This study aimed to provide a comprehensive ergonomic assessment of mid-air interaction and device-assisted interactions under vibration environments based on task performance, muscle activity in the upper limb and shoulder, and user perceptions. A within-subjects design was implemented in this study, where participants were required to perform basic pointing and dragging tasks with four interaction modes (i.e., one mid-air interaction and three device-assisted interactions) under static, low and high vibration environments, respectively. Both small and large target sizes were examined. Muscle activity was recorded with surface electromyography for five muscles from participants’ dominant arm. Results showed that mid-air interaction yielded longer task completion time, more errors, higher perceived workload, lower usability ratings, and larger muscle activities in the forearm, upper arm and shoulder compared with device-assisted interactions. There were significant interaction effects between vibration and interaction mode. Specifically, compared with device-assisted interactions, mid-air interaction was associated with greater susceptibility to the detrimental effects of vibration (poorer task performance and larger muscle activities). Target size significantly affected task performance, but the effects varied by tasks. Overall, our results suggest that mid-air interaction presents a higher ergonomic risk compared with device-assisted interactions, especially in vibration environments. These findings provide implications for better use, configuration and ergonomic assessment of interaction tools in vibration environments, and are useful in developing evidence-based interventions to control ergonomic risk in HCI tasks in vibration environments.

Electric Wheelchair Manufacturing Analysis For Physical Disabilities Reviewed from the Aspect of Ergonomics

The high rate of physical disability is a trigger and spur in the development of research/research for people with disabilities to help with their daily activities, one of which is with a wheelchair. There is a sense of concern to see manual wheelchairs used daily by people with physical disabilities, especially with their abnormal hands and feet, so it becomes a problem in itself because they are quite tricky and tired of pedaling a manual wheelchair. This condition impacts their work productivity, thereby reducing their income/economy. Therefore, the purpose of this research is to manufacture electric wheelchairs belonging to two people with physical disabilities (i.e., belonging to Bagus and Huda). The ergonomics tests are carried out, including (a) Compatibility of the anthropometry of the user's body and the dimensions of the wheelchair, (b) Results of the user's postural analysis with RULA (Rapid Upper Limb Assessment) (c) Conformity of the dimensions of the wheelchair with the standard, and (d) Evaluation of the usability of the wheelchair based on observation. The results obtained for the Bagus electric wheelchair are from the anthropometric side. The popliteal height is longer than the distance between the seat and the footrest in the wheelchair. For Bagus to be more comfortable in using his wheelchair and for his legs not to be crooked (which will potentially cause more excellent musculoskeletal disorders), it is recommended that the distance between the seat and the footrest be extended. As for Huda electric wheelchairs, in general, they have been modified to adjust to the needs and conditions of Huda's body and make the design of Huda wheelchairs more ergonomic. However, the postural analysis showed that the forearm position was raised, and the hand was twisted when Huda operated the electric wheelchair controller. It is, therefore, recommended to lower the position of the controller in line with the wheelchair mount.

Optimizing Coziness and Productivity: An All-Encompassing Ergonomic Investigation on Diners and Restaurant Operators in Dense Urban Living Environments

This research aims to determine and optimize the welfare of visitors and food stall owners in dense urban environments, especially in the context of dense residential areas in big cities. As ergonomics research, its main focus is to assess the physical and psychological conditions of visitors and food stall owners operating in dense urban environments. This research method involves a detailed analysis of ergonomic aspects, including room layout, furniture design, lighting and acoustics, taking into account the unique demands of dense housing. In addition, in-depth interviews with food stall owners and observations of visitor behavior were conducted to understand the non-physical aspects that influence their well-being. The research location is in the Paseban area, Central Jakarta. The results of this research provide an in-depth understanding of how environmental conditions can influence comfort and productivity in food stalls, both from the perspective of visitors and owners. The practical implications of these findings can serve as a guide for architects, designers and policy makers in improving the design of public spaces in dense urban environments, with the ultimate goal of improving the welfare of local communities. This study makes a significant contribution to our understanding of how ergonomics can be applied effectively to improve the quality of life amidst the challenges of dense housing in large cities.

Ergonomic Analysis of Small-Scale Palm Sugar Starch Processing Industry in Rancakalong Village, Sumedang Regency

Rancakalong village, Sumedang Regency, has been known for its small-scale palm sugar starch processing industry since 2013. This industry produces starch from palm trees, which is crucial for food and beverages. Generally, the processes involved in processing palm sugar starch include (i) splitting of the palm, (ii) grating, (iii) coarse fiber screening, (iv) fine fiber screening, (v) harvesting, and (vi) drying. Initial evaluations indicated that the workers experienced physical discomfort during their work. Therefore, this study aimed to analyze the ergonomic aspects of processing palm sugar starch, including the working posture, standard time, workload, noise, and vibration. Based on the analysis, the risk level for each work element in processing palm sugar starch fell into the high-risk (score 8-10) and very high-risk (score 11-15) categories. These risks cause discomfort due to inappropriate work posture and duration, necessitating significant changes. The standard time required for each work element was as follows: 212.88±28.43 seconds/kg (palm splitting), 363.45±12.90 seconds/kg (grating), 95.08±9.74 seconds/kg (coarse fiber screening), 192.05±21.27 seconds/kg (fine fiber screening), 35.57±5.78 seconds/kg (harvesting), and 1821.01±41.09 seconds/kg (drying). Regarding workload analysis, processing palm sugar starch activities fell into the moderate category with total energy cost (TEC) values ranging from 92.66±1.50 265.55±3.88 kcal/hour. Regarding noise and vibration analysis, the grating work element was identified as the station with the highest exposure, i.e., 96.00±0.82 dB and 1.6±0.05 m/s2, respectively. The results of this study could be used as a basis for developing more efficient work procedures, maintaining health, and improving safety in the processing of palm sugar starch.

Performance Evaluation, Machine Parameters and Ergonomic Aspects of Palm Fruit Harvesters

Performance Evaluation, Machine Parameters and Ergonomic Aspects of Palm Fruit Harvesters

Semantic Kansei Engineering Approach for Game Controllers and Design Improvement

The entertainment industry undergoes constant changes, and video games, along with the ways people enjoy them, evolve dynamically. In this context, there arises a need to innovate in areas such as user–game interaction and the design of conventional controllers to keep up with these transformations. This study has found that the design requirements of the external geometry of video game controllers significantly impact users’ purchasing decisions, who often rely on their sensations and emotions. The primary aim of this research has been to demonstrate that it is possible to develop a specific methodology to establish design guidelines that evaluate geometry and ergonomic aspects, considering users’ emotional needs. To achieve this goal, the Kansei methodology has been employed, an engineering discipline that focuses on product design based on emotional interaction and user sensations when using them. Through advanced statistical techniques such as principal component analysis and linear regression, the set of observations has been reduced and a robust predictive model has been developed. Following this methodological approach, surveys and field studies have been conducted, thus differentiating the project from a conventional engineering approach in various stages. Special attention has been paid to the tactile part of the controller, especially its casing. After thorough analysis, the redesigned casing, incorporating improvements derived from statistical analyses, has been compared to existing market models. The results obtained show a significant improvement compared to existing market models, particularly highlighting enhancements in functional characteristics and ergonomic design, enabling comfortable use for individuals with different hand sizes and preventing the grip surface from being slippery. In summary, this work supports the effectiveness of the Kansei methodology as an approach to adapting product design to users’ perceptions and emotional needs.

Practical Aspects of the Organization of Ergonomics Committees in the Context of the Quality of Ergonomic Activities Undertaken in Manufacturing Enterprises

Theoretical background: In order to systematize ergonomic activities in the enterprise, some of them decide to establish ergonomics committees whose task is to solve problems in this area and also to propose new, often innovative solutions for implementation. The structures of these units often include employees from different departments who have a different view of ergonomics depending on the position they hold. However, the organization of ergonomics committees can cause many problems due to the lack of top-down guidelines for their activities (each company must establish its own rules). In scientific research on the ergonomic aspects of projects, there is a tendency to look for factors that favor the diffusion of ergonomic issues in their implementation. One such factor may be the creation of an ergonomics committee to pursue ergonomic goals. Their activities are not described in detail in the literature (there are no practical guidelines for their functioning), which is why the topic is discussed in this article. Purpose of the article: The main goal of this article is to present propositions for actions that can be taken to systematize the functioning of the ergonomics committees and to link this task with the quality of ergonomics management in manufacturing enterprises. The aim of the article is also to describe, using a practical examples, various aspects of the operation of ergonomics committees and to indicate guidelines for their establishment and activities. Thus, the article aims to fill the research gap in the field of creating ergonomics committees. Research methods: The research used the interview method with participants of ergonomics committees from companies from various industries. The questions were asked in the following groups: organization and functioning of the ergonomics unit in the enterprise and assessment of the effects of the ergonomics team’s activities. The respondents were participants of the ergonomics committees, which was appointed at least 2 years earlier, the industries represented by the respondents are: automotive (2 companies) and furniture production. Data obtained in three selected enterprises (through informal interviews) where such committees operate, as well as a literature review in this area, were used to formulate these suggestions. The results of the undertaken research allowed for the identification of practical aspects of the functioning and organization of the ergonomics committees. This is an innovative area of research due to the fact that few scientific studies describe such units and guidelines for their practical implementation. Main findings: The main result of the undertaken research was to indicate the categories in which the activities of ergonomics committees should be considered and to provide practical guidelines for their activity. These guidelines are presented as structured areas for consideration when establishing an ergonomics committee: (1) establishing the principles of operation and reporting; (2) determining the composition of the committee; (3) determining the scope of activity of the committee; (4) providing appropriate training for committee’s representatives; (5) support for the committee’s activities. The most important conclusion from the undertaken research is the indication that each enterprise must plan the operation of the committee taking into account its internal conditions. The conclusions from the conducted research were supplemented with indications of directions for further research into the conditions for the functioning of ergonomics committees in manufacturing companies.

Analysis of the Productivity of Garden Maintenance Work and Efforts to Improve Effective and Efficient Work Procedures

Weeds growing wild among the staple crops cultivated by farmers have become a serious problem and must be immediately controlled, especially in forestry, agricultural and plantation areas. Therefore, practical knowledge is needed about how to manage the problem of weeds that grow undesirable and how to overcome them. Non-chemical weed control is carried out with physical activity. Physical activity carried out by workers while working is a physical workload that will affect their work productivity. The weight or lightness of work done by workers can be measured through direct measurements of human limbs or physique, among others, heart rate, blood pressure, body temperature, sweat rate, consumption of inhaled oxygen and chemical content in the blood. This study aims to identify the use of semi mechanical weed tools and brush cutter as well as analyze the physical workload experienced by workers. The stages and methods of research are carried out by measuring and testing tools in the field based on technical aspects including theoretical work capacity, effective work, field efficiency, fuel consumption, while ergonomic work aspects by measuring workload and fatigue levels directly on the operator's heart rate. From the measurement and calculation of the Increase Ratio of Heart Rate (IRHR), the lowest workload level was obtained with an index of 1.15 and the highest workload level of 1.51.

Designing A Disaster Preparedness Bag by Considering Ergonomics Aspect

Disasters may make people having to evacuate. When evacuating, evacuee may bring items required in evacuation place. The items must be ready previously in a bag, called a disaster preparedness bag. In case a disaster occurs, evacuee just grabs it and go for evacuation. Many bags used are not dedicated for disaster situation. Many types of items stored together and mixed causing of difficulty in retrieval. In addition, use of inappropriate bag will interfere with evacuee movement and slow down the evacuee while the evacuation time is too short. This research aims to design ergonomics disaster preparedness bag that can accommodate needs for 3x24 hours. Design process was started with planning phase to find out disaster preparedness bag development opportunity. The second phase is concept development. People who have evacuation experience are asked report their complaints regarding the bag used during previous evacuation and their needs for a disaster preparedness bag. Based on the needs, target specification is determined then concept alternatives are generated and selected. Then, main parts of the bag are identified. Continued with detailed design process, the dimensions of the proposed bag are determined using anthropometric data and dimension of required item in the first 72 hours of evacuation time. The design of proposed bag is such a backpack with multi compartments adjusted to item stored. The shoulder straps are designed like a vest then the load is not focused only on the shoulder but distributed to other part of body such as abdominal and chest muscle.

Lower Back &amp; Comfortability Analysis of Driving Posture to Mitigate Musculoskeletal Disorders: An Ergonomics Study using Digital Human Modelling in JACK Software

In this paper, the crucial aspect of driver comfort was explored by investigating the prevailing driving postures among individuals, aiming to discern their ergonomic implications and ascertain whether the commonly adopted postures are conducive to musculoskeletal health or pose potential risks. From the last decade vehicle like cars have become one of the common modes of personal transport. Car has high relevance in day-to-day activities like commuting, economic activities and sports etc. The continuous driving of vehicle can lead the driver prone to musculoskeletal disorders such as back pain, spine injury and posture issues. This study is conducted to address the ergonomic aspects of posture of the driver to highlight the risk of Musculoskeletal disorders (MSDs) and to optimize the driving posture. Lower Back Analysis (LBA) and Comfortability Analysis is performed in JACK Software to analyze the driving posture. A DHM (Digital Human Model) is created in JACK Simulation Software according to the collected anthropometric data of an average Pakistani man. A virtual Environment is created in JACK Simulation Software. The posture of the subject is analyzed by taking measurements of the subject’s angle of joints when they are sitting in a driving posture. For Ergonomic Analysis the Driving Posture is evaluated on JACK software to Mitigate Musculoskeletal Disorders. Results show that the subject is having low back compression force of 672 which is below the NIOSH Back Compression Action Limit of 3400N representing a nominal risk of low back injury.

2B3-4 Introduction of activities in ISO TC 159/SC4/WG3 to develop international standards related to ergonomics aspect of ABW （Activity-Based Working)

2B3-4 Introduction of activities in ISO TC 159/SC4/WG3 to develop international standards related to ergonomics aspect of ABW （Activity-Based Working)