Palm Force Distribution Probe of Handspring and Handspring Sideways

• Main Authors: Mao-Lung Lin, 林茂隆
• Other Authors: Jiunn-Jer Wu
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/60003282212488824263

碩士 === 國立臺灣師範大學 === 體育研究所 === 87 === One investigated that students in a Chinese opera school in Taipei had upper extremities injury as high as 45% in one year. The injury caused disturbance for students in learning, training and performance. Before, most sports injury studies about mechanics focused on low extremities bearing body weight and upper extremities exercise. However, learning and performing Chinese opera and gymnastics require handstand, handspring and handspring sideways as basic skills. The upper limb constantly bears the force which is over many times of the body weight. In the long run, the upper extremities tendon, ligament and even bone are injured. In order to find out the reason for the upper extremities injury, this study takes 7 gymnastic students and 10 Chinese opera students as subjects. The mean age of the gymnastic students is 15.0±1.5 years old, the Chinese opera students 17.2±0.4 years old; the mean height of the gymnastic students is 153.6±6.5 cm, the Chinese opera students 163.5±5.5 cm; the mean body weight of the gymnastic students is 46.2±5.9 kg, the Chinese opera students 57.1+3.9 kg. A capacitive pressure distribution platform(Emed-SF) is used for measuring the palm pressure distribution of handspring and handspring sideways, and for analyzing and comparing the gymnastic and Chinese opera students. The result of the study reveals that hypothenar has the peak relative impulse of the eight palm regions-thumb, index finger, middle finger, ring finger, little finger, metacarpal, thenar, and hypothenar. No significant difference is found between the eight regions of the two groups, the same as the result of the paired T test between those of right and left palms. The study result of the relative impulse should be the norm of the same movements, and can also be in comparison with the palm pressure change caused by various upper limb sports injuries. For the two groups, hypothenar has the peak palm pressure and the peak relative impulse of the eight regions in the three movements. Hypothenar, the outside of the palm, is therefore used to stabilize the body to do the handspring movements, just as the central pressure in walking pattern is toward outside to stabilize the body to move forward. And the result of the study reveals that no significant difference is found between the two groups of palm force distribution. Key words：handspring, handspring sideways, palm, force disrtibution