經調查北市復興劇校學生一年內上肢曾經受過傷害的比例高達45%，造成學習、訓練及表演的困擾。以往運動傷害的力學研究，大都以下肢負重上肢運動的研究為主，而中國傳統戲劇或體操不管是在學習或表演時，倒立、前手翻、側手翻皆是必備的基本技能之一，因此讓上肢負重且不斷的接受超過身體幾倍的力量衝擊，久而久之就造成上肢的肌腱、韌帶、甚至骨骼的傷害。
為了探討受傷的可能原因，本研究以體操七名、劇校十名同學為受測對象，平均年齡體操組為15.0±1.5歲，劇校組為17.2±0.4歲，平均身高體操組為153.6±6.5cm劇校組為163.5±5.5cm，平均體重體操組為46.2±5.9kg劇校組為57.1±3.9kg，用壓力板(Emed-SF)量測劇校學員前手翻、側手翻運動時手掌的地面壓力分佈情形，嘗試了解劇校、體操運動員的手掌各部位壓力的分佈情形，並分析比較劇校、體操兩組之間有無差異。
結果發現拇指(thumb)、食指(index finger)、中指(middle finger)、無名指(ring finger)、小指(little finger)、掌部(metacarpal)、魚際(thenar)、及小魚際(hypothenar)八個部位的相對衝量分佈比例的最大值，在側手翻和前手翻皆為小魚際，且體操和劇校兩組八個部位比較都未達顯著水準，左右手配對t檢定也未達顯著水準。相對衝量分佈比例的實驗結果應可做為同樣動作正常人的常模參考，並可做為比較各種上肢運動傷害所引起的手掌壓力變化。
體操和劇校三個動作八個部位的瞬間最大力量值和相對衝量分佈比例的最大值皆為小魚際，可見分、併腿前手翻都是利用左右手外側的小魚際穩定身體，以達到翻轉的目的，類似走路步態的合力中心都是向外側，來穩定身體向前移動。而由統計結果顯示，體操和劇校相同動作的手掌力量分佈並無差異。
關鍵詞：前手翻、側手翻、手掌、力量分佈

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

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