The effects of energy expenditure rate on work productivity performance at different levels of production standard time

Nur, Nurhayati Mohd; Dawal, Siti Zawiah Md; Dahari, Mahidzal; Sanusi, Junedah

doi:10.1589/jpts.27.2431

Cited by 15 publications

(4 citation statements)

References 17 publications

(22 reference statements)

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“…Hence, the assessment of energy expenditure or physical exertion during a specific task can deliver more accurate results. As per Nurhayati Mohd Nur et al, (2015), working with an energy expenditure rate that is either equal to or above the maximum energy expenditure rate of the tasks results in decreased work productivity performance.…”

Section: Discussionmentioning

confidence: 96%

Influence of footwear on individual performance during prolonged standing

Shaikh¹

2019

IJECS

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Standing is a normal posture during working in industries, some jobs even make it mandatory to stand while working. Standing is natural and itself doesn't pose a specific health risk. But standing for a very long duration has an immense share in many health complications. The aim of this study is to determine which type of footwear is healthier to wear while standing for long periods. Five physically fit participants (= 5) were chosen from lthe ive industrial environment. All the five participants participated in this study without disturbing their usual work as ma achine operator. Photo-plethysmography (PPG) was used to collect continuous heart rate information from each participant. Each participant was observed for six hours each day for two consecutive days, wearing different footwear each day. The information collected was used to calculate total energy expenditure during the experimentation period. In this study, it was observed, that standing for longer duration when wearing floaters (= 1699.5, = 451.5) and when wearing shoes (= 1288, = 140), have alternaan tive hypothesis. It was observed that there is signifia cant difference ((4) = 2.095, < 0.1; 90%) in energy expenditure while different footwear type was used. Participants were more physically exerted when wearing floaters than that when wearing shoes. Thus, it can be concluded that wearing shoes while standing for longer duration is the best choice. This study shows that the average energy expenditure among the group while using shoes is 22% less than that while using floaters. This makes wearing shoes a good choice while standing for longer duraa tion.

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Section: Discussionmentioning

confidence: 96%

Influence of footwear on individual performance during prolonged standing

Shaikh¹

2019

IJECS

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“…If plant factory work is simplified through the use of assistive devices, the work time will shorten. Work pace is a key issue in production system design 16 , 17 , 18 , 19 , 20 ) ; improvement of work efficiency may also prevent additional work-related musculoskeletal disorders.…”

Section: Discussionmentioning

confidence: 99%

Muscle activity and mood state during simulated plant factory work in individuals with cervical spinal cord injury

et al. 2016

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[Purpose] The present study investigated the physical and mental effects of plant factory work in individuals with cervical spinal cord injury and the use of a newly developed agricultural working environment. [Subjects] Six males with C5–C8 spinal cord injuries and 10 healthy volunteers participated. [Methods] Plant factory work involved three simulated repetitive tasks: sowing, transplantation, and harvesting. Surface electromyography was performed in the dominant upper arm, upper trapezius, anterior deltoid, and biceps brachii muscles. Subjects’ moods were monitored using the Profile of Mood States. [Results] Five males with C6–C8 injuries performed the same tasks as healthy persons; a male with a C5 injury performed fewer repetitions of tasks because it took longer. Regarding muscle activity during transplantation and harvesting, subjects with spinal cord injury had higher values for the upper trapezius and anterior deltoid muscles compared with healthy persons. The Profile of Mood States vigor scores were significantly higher after tasks in subjects with spinal cord injury. [Conclusion] Individuals with cervical spinal cord injury completed the plant factory work, though it required increased time and muscle activity. For individuals with C5–C8 injuries, it is necessary to develop an appropriate environment and assistive devices to facilitate their work.

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“…Since the increase in workload will lead to a significant increase in energy consumption, workers will be prone to fatigue. When energy consumption required is higher than that of the maximum capability of workers, it would lead to a risk of WMSDs [24].…”

Section: Problem Descriptionmentioning

confidence: 99%

“…As Nur et al described in his study, the trend in modern industry is moving towards more time-intensive production with standardized, short cycle times and limited completion times at present [24]. We still consider how to improve productivity from these points of time, cost, and other factors directly related to production rather than energy consumption, employee fatigue, and other factors related to ergonomics.…”

Section: Introductionmentioning

confidence: 97%

A Biobjective Model for Manual Materials Handling with Energy Consumption Being Accounted For

Zhang

Fan

Xiong

et al. 2018

Mathematical Problems in Engineering

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Aiming at production environment and operation design in manual materials handling which often overlook workers' physiological factors and cause fatigue, even work-related musculoskeletal disorders, we construct a biobjective model based on economics and ergonomics. In the model, two objectives include functions about handling time and energy consumption. Based on the openness of IGRIP/ERGO simulation software combined with MATLAB, we design and develop the interactive simulation platform, where program language can be automatically generated. Then, we analyze the case about handling operations in an automobile brake pad manufacturing company, and the number of input materials and process scheduling are taken as research objects. Finally, the results show that the win-win optimal solution can be usually obtained between productivity and ergonomics for decision makers according to the proposed biobjective model. Moreover, the case study demonstrates that the interactive simulation platform can be devoted to providing the solution for modern production operation directly and conveniently, which can make the production environment and operation design in accordance with ergonomics.

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The effects of energy expenditure rate on work productivity performance at different levels of production standard time

Cited by 15 publications

References 17 publications

Influence of footwear on individual performance during prolonged standing

Influence of footwear on individual performance during prolonged standing

Muscle activity and mood state during simulated plant factory work in individuals with cervical spinal cord injury

A Biobjective Model for Manual Materials Handling with Energy Consumption Being Accounted For

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