Evaluation of total grip strength and individual finger forces on opposing (A-type) handles among Koreans

Kong, Yong‐Ku; Seo, Min-Tae; Kang, Hyun-Sung

doi:10.1080/00140139.2013.851284

Cited by 11 publications

(2 citation statements)

References 28 publications

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“…Although several studies have measured the grasping forces exerted by the hand, most of them have focused on pinch prehension or have used specific instrumented devices rather than real objects (Aoki et al, 2006;Kinoshita et al, 1995;Radwin et al, 1992;Reilmann et al 2001;Santello and Soechting 2000, Kong et al, 2011, Kuo et al, 2013. The grip force and the relative contributions of different areas of the hand have also been studied for the design of handles (Lee et al, 2009;McGorry and Lin 2007;Kong et al, 2014). Specific devices have been designed for studying the grip force distribution, especially for cylindrical handles (Chadwick and Nicol, 2001;Dong et al, 2008;Rossi et al, 2012) and recently for pliers (Kim et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Grip force and force sharing in two different manipulation tasks with bottles

et al. 2016

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Grip force and force sharing during two activities of daily living were analysed experimentally in 10 right-handed subjects. Four different bottles, filled to two different levels, were manipulated for two tasks: transporting and pouring. Each test subject's hand was instrumented with eight thin wearable force sensors. The grip force and force sharing were significantly different for each bottle model. Increasing the filling level resulted in an increase in grip force, but the ratio of grip force to load force was higher for lighter loads. The task influenced the force sharing but not the mean grip force. The contributions of the thumb and ring finger were higher in the pouring task, whereas the contributions of the palm and the index finger were higher in the transport task. Mean force sharing among fingers was 30% for index, 29% for middle, 22% for ring and 19% for little finger. Practitioner Summary: We analysed grip force and force sharing in two manipulation tasks with bottles: transporting and pouring. The objective was to understand the effects of the bottle features, filling level and task on the contribution of different areas of the hand to the grip force. Force sharing was different for each task and the bottles features affected to both grip force and force sharing.

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Section: Introductionmentioning

confidence: 99%

Grip force and force sharing in two different manipulation tasks with bottles

et al. 2016

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“…However, they have some problem to be applied to the hand tool design for Koreans, since their study was for only western people. Another study by Kong et al (2014) presents Korean men's optimum grip span is 50mm. However, it does not address women's grip span.…”

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confidence: 99%

Evaluation of Gender Effect in Various Pliers' Grip Spans for Maximum Isometric Grasping Tasks

Kong¹,

Kim²,

Park³

et al. 2014

Journal of the Ergonomics Society of Korea

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Objective: The purpose of this study was to evaluate the effect of gender (male, female) and grip spans (45, 50, 60, 70, 80mm) on total grip strength, resultant force, finger force and subjective discomfort ratingI. Background:In order to prevent musculoskeletal disorders, studies of hand tools need to be preceded based on grip strength, finger force, and subjective discomfort rating. However, experimental apparatus using tools such as pliers that reflect the actual work place was almost non-existent.Method: Fifty-Two (26 males and 26 females) participants were recruited from the student population. In this study, a pair of revised pliers, which can change grip span from 45 to 80mm was applied to estimate total grip strength, resultant force and individual finger forces. All participants were asked to exert a maximum grip force with three repetitions, and to report the subjective discomfort rating for five grip spans of pliers (45, 50, 60, 70, 80mm).Results: There were significant differences of total grip strength, resultant force, individual finger forces and subjective discomfort rating according to grip span. The lowest total grip strength was obtained from the grip span of 80mm for both genders. For resultant force, the highest resultant force was exerted at grip spans of 50, 60 and 70mm for females and 50 and 60mm for males. The lowest subjective discomfort rating was observed in the 50mm for both genders. Conclusion:Based on the result, 50mm and 60mm grip spans which provide the highest force and lowest discomfort rating might be recommendable for the male and female pliers users. Application:The findings of this study can provide guidelines on designing a hand tool to help to reduce hand-related musculoskeletal disorders and obtain better performance.

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Relation between grip force, ergonomic interventions, and task performance: a review

Alam,

Khan

2024

Int J Interact Des Manuf

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Evaluation of total grip strength and individual finger forces on opposing (A-type) handles among Koreans

Cited by 11 publications

References 28 publications

Grip force and force sharing in two different manipulation tasks with bottles

Grip force and force sharing in two different manipulation tasks with bottles

Evaluation of Gender Effect in Various Pliers' Grip Spans for Maximum Isometric Grasping Tasks

Relation between grip force, ergonomic interventions, and task performance: a review

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