지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
Objective:The aim of this study is to evaluate contributions of individual finger forces associated with various levels of submaximal voluntary contraction tasks.
Background: Although many researches for individual finger force have been conducted, most of the studies mainly focus on the maximal voluntary contraction. However, Information concerning individual finger forces during submaximal voluntary contraction is also very important for developing biomechanical models and for designing hand tools, work equipment, hand prostheses and robotic hands. Due to these reasons, studies on the contribution of individual finger force in submaximal grip force exertions should be fully considered.
Method: A total of 60 healthy adults without any musculoskeletal disorders in the upper arms participated in this study. The young group (mean: 23.7 yrs) consisted of 30 healthy adults (15 males and 15 females), and the elderly group (mean: 75.2 yrs) was also composed of 30 participants (15 males and 15 females). A multi-Finger Force Measurement (MFFM) System developed by Kim and Kong (2008) was applied in order to measure total grip strength and individual finger forces. The participants were asked to exert a grip force attempting to minimize the difference between the target force and their exerted force for eight different target forces (5, 15, 25, 35, 45, 55, 65, and 75% MVCs). These target forces based on the maximum voluntary contraction, which were obtained from each participant, were randomly assigned in this study.
Results: The contributions of middle and ring fingers to the total grip force represented an increasing trend as the target force level increased. On the other hand, the contributions of index and little fingers showed a decreasing trend as the target force level increased. In particular, Index finger exerted the largest contribution to the total grip force, followed by middle, ring and little fingers in the case of the smallest target force level (5% MVC), whereas middle finger showed the largest contribution, followed by ring, index and little fingers at the largest target force levels (65 and 75% MVCs).
Conclusion: Each individual finger showed a different contribution pattern to the grip force exertion. As the target force level increase from 5 to 75% MVC, the contributions of middle and ring fingers showed an increasing trend, whereas the contributions of index and little fingers represented a decreasing trend in this study.
Application: The results of this study can be useful information when designing robotic hands, hand tools and work equipment. Such information would be also useful when abnormal hand functions are evaluated.
Background: Although many researches for individual finger force have been conducted, most of the studies mainly focus on the maximal voluntary contraction. However, Information concerning individual finger forces during submaximal voluntary contraction is also very important for developing biomechanical models and for designing hand tools, work equipment, hand prostheses and robotic hands. Due to these reasons, studies on the contribution of individual finger force in submaximal grip force exertions should be fully considered.
Method: A total of 60 healthy adults without any musculoskeletal disorders in the upper arms participated in this study. The young group (mean: 23.7 yrs) consisted of 30 healthy adults (15 males and 15 females), and the elderly group (mean: 75.2 yrs) was also composed of 30 participants (15 males and 15 females). A multi-Finger Force Measurement (MFFM) System developed by Kim and Kong (2008) was applied in order to measure total grip strength and individual finger forces. The participants were asked to exert a grip force attempting to minimize the difference between the target force and their exerted force for eight different target forces (5, 15, 25, 35, 45, 55, 65, and 75% MVCs). These target forces based on the maximum voluntary contraction, which were obtained from each participant, were randomly assigned in this study.
Results: The contributions of middle and ring fingers to the total grip force represented an increasing trend as the target force level increased. On the other hand, the contributions of index and little fingers showed a decreasing trend as the target force level increased. In particular, Index finger exerted the largest contribution to the total grip force, followed by middle, ring and little fingers in the case of the smallest target force level (5% MVC), whereas middle finger showed the largest contribution, followed by ring, index and little fingers at the largest target force levels (65 and 75% MVCs).
Conclusion: Each individual finger showed a different contribution pattern to the grip force exertion. As the target force level increase from 5 to 75% MVC, the contributions of middle and ring fingers showed an increasing trend, whereas the contributions of index and little fingers represented a decreasing trend in this study.
Application: The results of this study can be useful information when designing robotic hands, hand tools and work equipment. Such information would be also useful when abnormal hand functions are evaluated.
목차
1. Introduction
2. Methods
3. Results
4. Discussion
References
참고문헌 (13)
참고문헌 신청
[학술지(정기간행물)] - An, K.N. / 1985 / Forces in the normal and abnormal hand / Journal of Orthopaedic Research 3 (2) : 202 ~ 211
[학술지(정기간행물)] - Crago, P.E. / 1991 / Feedback regulation of hand grasp opening and contact force during stimulation of paralyzed muscle / IEEE Transactions on Biomedical Engineering 38 (1) : 17 ~ 28
[단행본] - Fess, E.E. / 1981 / Clinical Assessment Recommendations / American Society of Hand Therapist, University of Minnesota Press
[학술지(정기간행물)] - 공용구 / 2008 / MFFM System을 이용한 손가락 별 파지 폭들의 변화에 따른 악력 및 개인 선호도에 대한 연구 / 대한인간공학회지 27 (3) : 1 ~ 6
[학술지(정기간행물)] - Kong, Y.K. / 2005 / Optimal cylindrical handle diameter for grip force tasks / International Journal of Industrial Ergonomics 35 (6) : 495 ~ 507
[학술지(정기간행물)] - Crago, P.E. / 1991 / Feedback regulation of hand grasp opening and contact force during stimulation of paralyzed muscle / IEEE Transactions on Biomedical Engineering 38 (1) : 17 ~ 28
[단행본] - Fess, E.E. / 1981 / Clinical Assessment Recommendations / American Society of Hand Therapist, University of Minnesota Press
[학술지(정기간행물)] - 공용구 / 2008 / MFFM System을 이용한 손가락 별 파지 폭들의 변화에 따른 악력 및 개인 선호도에 대한 연구 / 대한인간공학회지 27 (3) : 1 ~ 6
[학술지(정기간행물)] - Kong, Y.K. / 2005 / Optimal cylindrical handle diameter for grip force tasks / International Journal of Industrial Ergonomics 35 (6) : 495 ~ 507
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UCI(KEPA) : I410-ECN-0101-2017-530-001948585