- 期刊
不同高度赤腳著地動作之生物力學分析
Biomechanical Analysis of the Barefoot Drop Landing from Different Heights
摘要
本研究的目的是在比較三種不同高度（59、72、100公分）赤腳著地動作的運動學和動力學變化的情形。以國立臺灣師範大學體育系20名男生為受試者，平均身高為171.5±4.8公分，平均體重為66.7±5公斤，平均年齡為22.1±1.8歲。運動學和動力學的資料是使用PEAK PERFORMANCE高速攝影機(120Hz)和KISTLER測力板9287型(1000Hz)同步收集資料。統計方法是使用重覆量數單因子變異數分析(α=.05)，達顯著差異後再使用杜凱氏法進行事後比較。 結果發現髖關節和膝關節角位移、下肢各關節之最大角速度、地面垂直反作用力和衝量的第一峰值和第二峰值、50毫秒內的被動衝量以及緩衝期內的全部衝量達到顯著差异，幷且隨著高度的增加而增加。因此在赤脚著地時，高度愈高衝擊速度也就愈大，人體骨胳肌肉系統必需承受更大的力量和衝量，如果著地動作不正確可能使我們的骨胳肌肉系統發生潜在性的傷害。所以著地時建議要增加下肢關節的角位移，以緩衝因著地時所產生的力量，以避免可能造成的傷害。
並列摘要
The purpose of this study was to analyse the kinematic and kinetic differences of the barefoot drop landing from three different heights (59, 72, 100cm). Twenty undergraduates P. E. major male students served as the subjects for this study. The mean height, weight, and age were 171.5±4.8cm, 66.7±5kg, and 22.1±1.8 years respectively. Kinematic and kinetic data were acquired simultaneously by using a PEAK PERFOR-MANCE high speed camera (120Hz) and a KISTLER (model 9287) force plate (1000Hz). The selected variables were tested by one-way repeated ANOVA (α=.05) and Tukey method posterior comparisons. The results indicated that there were significant increases in lower extremity joints flexion (hip and knee joints)and greatest angular velocity、first peak vertical reaction force、second peak vertical reaction force、the passive impulse and the impluse of landing phase durations as height increases. It is suggested that when landing from greater height, the subject should increase the lower extremity joints flexion to avoid the possibility of injury.