The influence of rice plow handle design and whole-body posture on grip force and upper-extremity muscle activation

Swangnetr, Manida; Kaber, David B.; Phimphasak, Chatchai; Namkorn, Ploypailin; Saenlee, Krittaya; Zhu, Biwen; Puntumetakul, Rungthip

doi:10.1080/00140139.2014.934301

Cited by 15 publications

(8 citation statements)

References 26 publications

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“…For the flexor muscles, the decrease in wrist joint angles toward palmar flexion induced a reduction in torque output. This suggests that in the case of rot-HP utilization, a surgeon might need less muscular effort to conduct laparoscopic procedures than with the fixed-HP in the area of Quadrants B and C. This hypothesis is supported by the findings of the present study with a reduction flexor muscle activity in Quadrant C at the lower working height as well as the findings of Swangnetr and colleagues (2014), who found increased muscle efficiency (more grip force per muscle activity) using an improved rice plow handle design that induced more neutral wrist positions.…”

Section: Discussionsupporting

confidence: 85%

Ergonomic Benefits From a Laparoscopic Instrument With Rotatable Handle Piece Depend on the Area of the Operating Field and Working Height

Steinhilber¹,

Reiff²,

Seibt³

et al. 2017

Hum Factors

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Objective To evaluate the effect of a laparoscopic instrument with a 360° rotatable handle piece (rot-HP) on biomechanical stress and precision in different areas of a simulated operating field at two working heights. Background Surgeons performing laparoscopic procedures are exposed to biomechanical stress and have an increased risk of musculoskeletal complaints. Method Fifty-seven healthy subjects (27 men, median age 26) without experience in laparoscopy performed a precision task in four quadrants (A-D) of the operating field using the rot-HP or a common fixed handle piece (fixed-HP) at an individually adjusted lower or higher working height. Biomechanical stress was assessed by surface EMG, wrist joint angles, and arm postures and precision by the number of mistakes. Results Using the rot-HP reduced muscle activity of the biceps brachii and flexor carpi radialis muscle. An interaction of flexor activity and area of the operating field occurred with the lowest activity in Quadrant C. Wrist joint angles were more neutral using the rot-HP, especially when the lower working height was applied and in Quadrants B and C. However, increased wrist dorsal flexion occurred in Quadrant A while using the rot-HP. Arm postures and precision were less affected. Conclusion The rot-HP allows some reductions of stresses in the arm and hand region, whereas the stress in the shoulder neck region is not modified. Application The instrument's position and the working height may have to be considered as mediatory factors when describing the effectiveness of an ergonomic handle design for laparoscopic instruments.

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Section: Discussionsupporting

confidence: 85%

Ergonomic Benefits From a Laparoscopic Instrument With Rotatable Handle Piece Depend on the Area of the Operating Field and Working Height

Steinhilber¹,

Reiff²,

Seibt³

et al. 2017

Hum Factors

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“…A new tool for planting rice was also carried out, thus avoiding doing this activity manually [44]. Other improvements in this type of crop were the modification of the equipment handles used for the plow, [45] and the mechanization of the tasks of transplantation and start-up in rice cultivation [46].…”

Section: Musculoskeletal Disorders In Agriculturementioning

confidence: 99%

Assessment of Postural Load during Melon Cultivation in Mediterranean Greenhouses

et al. 2018

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Health and safety at work directly influence the development of sustainable agriculture. In the agricultural sector, many farm workers suffer musculoskeletal disorders caused by forced posture. The objective of this research is to assess working postures during melon cultivation in Almería-type greenhouses. The Ovako Working Posture Assessment System (OWAS) has been used with pictures of the tasks. The variables studied by multiple correspondence analysis were as follows: Subtask, Posture code, Back, Arms, Legs, Load, Risk, and Risk combination. The OWAS analysis showed that 47.57% of the postures were assessed as risk category 2, 14.32% as risk category 3, 0.47% as risk category 4, and the rest as risk category 1. Corrective measures should be implemented immediately, as soon as possible, or in the near future, depending on the risks detected.

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“…These studies include the study by Swangnetr et al. [32] and others that studied ergonomic-related risk identification and pain analysis for farm workers involved in rice field preparation; Chanprasit and Kaewthummanukul [33] studied corn plantation farm workers and found that most of their working postures did not adhere to ergonomic recommendations such as the prevalence of body bending (9.2%), prolonged standing (97.7%), and manual heavy lifting (90%) [33] . In addition to those described above, studies were also conducted for sugarcane, rice, and rubber tree plantation workers [15] , [16] .…”

Section: Introductionmentioning

confidence: 99%

A Cross-sectional Study of Musculoskeletal Symptoms and Risk Factors in Cambodian Fruit Farm Workers in Eastern Region, Thailand

Thetkathuek

Meepradit

Sa-ngiamsak

2018

Safety and Health at Work

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BackgroundWork-related musculoskeletal disorders are accumulative disorders that are most frequently found in agricultural farmers. The purpose of this study was to investigate factors that affect symptoms resulting from work-related musculoskeletal disorders among Cambodian farm workers working in fruit plantations in the eastern region of Thailand.MethodsThe Nordic Musculoskeletal Questionnaire, Rapid Upper Limb Assessment, and Hazard Zone Jobs Checklist techniques were used to interview 861 farmers who participated in the study.ResultsThe data showed that men who had been working for >10 years were more at risk of neck pain than those working for <1 year with adjusted odds ratio (aOR) 1.66, 95% confidence interval (CI) (1.90, 14.5). Among women those who had been working for >10 years experienced lower back pain with aOR 8.13, 95% CI (1.04, 63.74), compared with those who had been working for <1 year. Men whose tasks required raising the arms above shoulder height had a risk factor contributing to neck pain of aOR 1.68, 95% CI (1.08, 2.61) when compared with those who did not work with this posture, and women had aOR 1.82, 95% CI (1.07, 3.12) when compared with those who did not work with this posture.ConclusionBased on the results of this study, it is recommended that work-related health conditions are monitored in migrant plantation workers to reduce the risks of musculoskeletal disorders.

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The influence of rice plow handle design and whole-body posture on grip force and upper-extremity muscle activation

Abstract: The findings of this work may be used to educate farmers on the potential for hand and arm injury in rice cultivation activities. Results may also provide a basis for redesign of existing tiller handles to promote neutral wrist posture, greater efficiency in muscle use and machine control.

Cited by 15 publications

References 26 publications

Ergonomic Benefits From a Laparoscopic Instrument With Rotatable Handle Piece Depend on the Area of the Operating Field and Working Height

Ergonomic Benefits From a Laparoscopic Instrument With Rotatable Handle Piece Depend on the Area of the Operating Field and Working Height

Assessment of Postural Load during Melon Cultivation in Mediterranean Greenhouses

A Cross-sectional Study of Musculoskeletal Symptoms and Risk Factors in Cambodian Fruit Farm Workers in Eastern Region, Thailand

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