ヒトの利き手と上肢の一側優位性
スポンサーリンク
概要
- 論文の詳細を見る
In the present paper, the relationship between handedness and laterality in some measurements of the human upper limb was discussed. On the basis of a questionaire on the handedness in routine work and action or sports movement deviced by Kimura and Asaeda (1974), of 392 male medical students, 28 (7.4%) were identified to be left handed and 2 (0.5%) ambidextrous, and others (92.4%) were right handed. The subjects of the study consisted of 28 left handed students and 22 right handed ones sampled at random. The following items were measured; somatornetrically the grip strength, the girth of upper arm and forearm, and the length of upper limb, upper arm, forearm and hand; and on the radiographs of the hand and wrist, the length and the width at mid shaft of all the metacarpals and phalanges, in both right and left sides. Laterality was discussed based on the differences of the means in both sides, the distributions of the dominant side and the laterality coefficient for each measurement between the right and left handed groups. The laterality coefficient was calculated based on the following equation for each individual; L.C. = 100(R-L)/C.V.(R+L). In this equation, the R and L are the measured values in the right and left sides, and the C.V. is the coefficient of variance. A negative sign is conventionally added to the coefficient, when the measurement is dominant at the left side. From this study, the following results were found; (1) The grip strength and the girth of forearm, followed by the girth of upper arm and the length of forearm, are apparently dominant at the same side of the handedness. The length of hand is dominant at the left side for both right and left handed groups. The length of upper limb and upper arm do not show any laterality. A relationship of compensatory is suspected between the forearm and the hand in length. It serves probably to keep a balance between the right and left upper limbs. (2) The length of every hand bone generally shows little lateralities. The width of the second metacarpal and proximal, middle and distal phalanges, the third metacarpal and proximal and middle phalanges, the fourth metacarpal and proximal phalanx, and the fifth metacarpal are dominant at the same side of the handedness. (3) Dominance of the measurement at the side of handedness is generally more apparent in the right handed group than in the left, as well as in males than in females.
- 日本民族衛生学会の論文
著者
関連論文
- 骨緻密質の加令的変化と年令推定に関する研究 : 3.推定の年令限界
- 側頭筋層分化に関する一知見
- 骨質量の指標としての第二・第三中手骨の比較〔英文〕
- 底翼指数による仙骨の性判別〔英文〕 (鈴木尚先生古稀記念特集--日本人)
- 国際解剖学用語語源辞典
- ヒトの利き手と上肢の一側優位性