Effects of Non-neutral Posture and Anthropometry on Heart Rate in Hand Tools Tasks

Shokshk, Ali Ahmed; Ahmad, Siti Hajar; Aziz, Faieza Abdul; Harith, Hazreen Haizi; Aziz, Azizul Rahman Abd; Suliano, Salami Bahariah

doi:10.1007/978-981-13-8297-0_10

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…However, these findings are inconsistent with those of Hills et al (2014), noting that larger people require more energy than smaller people. In addition, Shokshk et al (2020) revealed an inverse relationship between heart rate and body weight (free fat) in study participants. The contradictory results have prompted further investigation into the effect of individual weight and AEE on different loads, such as overlapping positions in drilling tasks.…”

Section: Body Weightmentioning

confidence: 87%

Effect of Workers’ Weight on Work Efficiency

Shokshk,

Shokshok

2023

JMSET

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The primary objective of the human factor is to optimize performance and ensure safety through physical work while mitigating the risk of musculoskeletal complaints and reducing energy expenditure. Lately, concerns have been raised that body capacities may not only contribute to an increased risk of musculoskeletal disorders but also to increased energy which leads to a decrease in work efficiency. Therefore, this study aimed to explore the impact of body weight on work efficiency, specifically in terms of activity energy expenditure (AEE). AEE amounts were conducted using the Actiheart device while subjects performed 12 coordinated trunks, shoulder, and leg postures during a drilling task. Statistical analyses, including independent samples t-test and mean differences, were employed to examine the effects of subject weight on AEE. The findings revealed a negative correlation between AEE and subject weight (free fat), with an R-squared value of 0.62. This indicates that as subject weight increases, AEE decreases. Interestingly, individuals with higher body weight (free fat) expended less AEE, suggesting a potentially more efficient use of energy during the task.

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Section: Body Weightmentioning

confidence: 87%

Effect of Workers’ Weight on Work Efficiency

Shokshk,

Shokshok

2023

JMSET

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“…Li et al (2009) examined the variables affecting physiological responses in MMH and found that lift height significantly affected oxygen consumption and heart rate. Maiti et al also presented evidence that the WHR during lifting was higher in below‐knee height than the back and shoulder heights, and the maximum acceptable weight for lifting load was lower at this height than that of the back region (Maiti & Ray, 2004a; Shokshk et al, 2020). Thus, the effect of lifting height in the present study would be consistent with these studies.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical and physiological responses to allowable load handling limits in Iranian female workers

Nourollahi‐Darabad,

Mojaddam,

Dianat

et al. 2023

Hum Ftrs & Erg Mfg Svc

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In 2017, load limit values for manual material handling (MMH) tasks were confirmed to protect workers from low back disorders without prior validity investigation for Iranian workers. The present study investigated the applicability and feasibility of the Washington State Department of Labor and Industries (WISHA) lifting method as an occupational exposure limit (OEL) for the MMH tasks in a sample of young Iranian female workers using biomechanical and physiological criteria. A laboratory study was conducted with 10 female participants performing lifting tasks as described in the Iranian OEL for the MMH tasks based on the WISHA checklist. Each participant completed 21 lifting task combinations that varied in height and reach with the maximal allowable load. To test the applicability of the WISHA method, the maximum aerobic capacity and the equivalent heart rate (EHR) were estimated for 10 young Iranian female workers using an ergometer and Astrand protocol. Moreover, spinal loads for each lifting task were calculated using a static biomechanical model. From a physiological point of view, approximately 38% of the lifting tasks resulted in an increase in the physical workload. For 33% of the lifting trials, the estimated compression loads exceeded 3400 N. The findings revealed that the weight and lift height of the loads affected the lifting capacity of the participants. It seems that the allowable weight limits for manual lifting are not matched to the biomechanical and physiological capacities of the Iranian women. Therefore, the Iranian guideline for manual lifting is recommended to be revised based on the physiological and biomechanical capacities of the Iranian women.

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“…They concluded that handgrip strength could serve as a reliable indicator of outstanding performance in cricket and a valuable criterion for player selection in this sport. Furthermore, a study by Shokshk et al [5] established a negative relationship between subjects' maximum grip strength and heart rate during a drilling task. However, the potential impact of maximum grip strength on AEE (activity-related energy expenditure) and work efficiency is still in need of clarity.…”

Section: Background Of Studiesmentioning

confidence: 99%

Effect of Grip strength on Work Efficiency in Hand Tools Tasks

Shokshk,

Shokshok

2024

JAU

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The overarching goal of ergonomics is to enhance performance and ensure workplace safety during physical tasks, simultaneously minimizing musculoskeletal disorders and energy expenditure. Recently, concerns have arisen about body measurements contributing not only to musculoskeletal issues but also to a potential decline in energy and work efficiency. Hence, this study aimed to explore the impact of maximum grip strength (MGS) on activity energy expenditure (AEE) and work efficiency. AEE measurements, conducted using the Actiheart, were carried out with 10 subjects performing a drilling task in 12 coordinated postures involving the shoulder, trunk, and leg. Analysis through independent samples t-test and mean differences revealed that AEE decreased as subject's MGS increased. Individuals with higher MGS exhibited lower in AEE, suggesting greater efficiency in their performance.

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Effects of Non-neutral Posture and Anthropometry on Heart Rate in Hand Tools Tasks

Cited by 5 publications

References 11 publications

Effect of Workers’ Weight on Work Efficiency

Effect of Workers’ Weight on Work Efficiency

Biomechanical and physiological responses to allowable load handling limits in Iranian female workers

Effect of Grip strength on Work Efficiency in Hand Tools Tasks

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