瑜珈頭立式體位法之生物力學分析

Abstract

目的：分析瑜珈頭立式體位法動作特徵以及男、女專業瑜珈教師 施作之差異。方法：以男(年齡34.1±3.31、身高177±1.79cm、體重72.4±4.41kg)、女(年齡36.5±3.94、身高162.1±6.24cm、體重52.1±3.71kg)各6名瑜珈專業教練為受試對象。利用VICON Motion Capture System三度空間動作分析系統（200Hz）、同步Kistler測力板（1000Hz）與T＆T Medilogic壓力墊，擷取頭立式完成動作過程中的運動學(kinematics)、動力學(kinetic)參數。將結果以描述性統計呈現；並以無母數Mann-Whitney檢定，比較男性與女性之差異，顯著水準之考驗定為α=.05。結果：頭立式運動學特徵為，身體矢狀面中，脊椎、髖關節、膝蓋關節與站立時關節角度無差異。動力學特徵為頭部、左右手肘各承擔身體重量約三分之一。不同性別施做頭立式動作之無影響。結論：雖然頭立式動作有其困難性，尤其在完成期，踝、膝、髖關節與脊椎呈直線狀態且與地面呈垂直時，要保持穩定平衡更加困難。但是瑜珈教師經長期練習後均能完成頭立式動作，並達於動作的一致性。另外，練習者只要姿勢及動作正確，在施做瑜珈頭立式動作時，也不會因性別差異，造成動作結果之不同。

Purpose: To analyze the biomechanical characteristics of the yoga pose headstand, performed by both female and male yoga instructors, and compare the potential differences in the test results due to gender. Methods: 6 male(age:34.1±3.31,height:177±1.79cm,weight:72.4±4.41kg) and 6 female (age:36.5±3.94,height:162.1±6.24cm,weight:52.1±3.71kg) yoga instructors participated in the study. The Vicon Motion Capture System (200Hz), Kistler force platforms (1000Hz), and T＆T Medilogic pressure pad were used to collect the kinematics and kinetic data. Nonparametrics Mann-Whitney was used for statistics. The significant level of difference was set at α=.05. Results: In the sagittal plane, the angles in the spine, the hip and the knee during the performance of headstand were the same to those in standing. No gender effect was found during performing yoga pose headstand. conclusion：Although the headstand has its difficulties. In particular, the angles of the ankle, knee, hip and spine, was be a line formed, and vertical with the ground state, it more difficult to maintain a stable equilibrium. However, the long-term practice yoga instructors are able to complete the consistent headstand. In addition, When yoga practitioners perform headstand correctly with good alignment, the Biomechanical characteristics didn’t affect by gender.