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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국사회체육학회 한국사회체육학회지 한국사회체육학회지 제31권
발행연도
2007.11
수록면
961 - 973 (13page)
DOI
10.51979/KSSLS.2007.11.31.961

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초록· 키워드

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The aim of this study was to investigate the age-related changes of MVF (maximal voluntary contraction force) and finger interaction indices such as finger force enslaving (FE: force production by unintended fingers during force production by task finger), force deficit (FD: force difference between single finger MVF and the force of the same finger in four- finger task), and force sharing (FS: percent contributions of individual finger forces to the total force in four- finger task). Children(n=25, 6-11 years) and young adults(n=8, 20-23 years) participated as subjects in this study. The subjects performed single-finger and four-finger maximal voluntary contraction tasks. During the tasks, the subjects inserted the distal phalanges of the right hand into thimbles affixed to small force sensors with 20° of flexion about the metacarpophalangeal joint and pressed the sensor(s) to produce their maximum isometric force. The results revealed that: 1) MVF increased with age, the steep of increasing slope(N/year) from regression analysis was greatest at four-finger task, then index & middle finger, ring, and little finger task in that order. 2) FE showed the tendency of decrease with age, however, there was no significant difference across age groups. 3) FD revealed the tendency of decrease at all finger tasks with age, however, index finger only showed significant decrease with age. 4) FS was different across task fingers(M > I > R > L). FS pattern of individual finger was very similar across all age groups. We conclude that the finger strength increases with age, however, finger interaction indices(FE and FD) show the tendency of decrease with age from 6 to 23 years. The sharing pattern of fingers appears to develop before 6 years of age.

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