背景與目的：本研究目的在了解高低衝擊有氧運動訓練前後，正常年輕人平衡能力改變的情況。方法：學期初於某國立大學選修高低衝擊有氧體育課程的一般大學生中徵求志願者參與本研究。共完成16名受試者（9女、7男）的前後測平衡檢查。平衡檢查包括單腳站立測驗及電腦動態姿勢平衡儀的平衡測驗，每次測驗的順序以抽籤方式隨機安排。單腳站立測驗包括左右腳以及張閉眼等四種狀況。電腦動態姿勢平衡儀的評估內容包括感覺整合測驗、規律重心轉移測驗以及八方向持續重心轉移測驗。結果：受試者經過一學期的高低衝擊有氧運動訓練後，在單腳站立測驗左腳閉眼情境（平均進步7.02秒）以及感覺整合測驗中張眼下測力板與身體同步轉動情境（平衡分數平均進步8.54分）、閉眼下測力板與身體同時轉動情境（平衡分數平均進步9.98分）、屏幕與測力板皆與身體同步轉動情境的平衡表現有顯著進步（平衡分數平均進步19.40分）(p<0.05)。討論與結論：本研究結果顯示高低衝擊有氧運動對於平衡能力有助益，然而本研究缺乏對照組且缺乏長期追蹤，建議未來可以增加對照組以及增加受試者數目。此外亦可探討將高低衝擊有氧運動訓練融入一般平衡訓練之可行性。

Purpose: Hi-low impact aerobic exercise has been shown to improve cardiovascular endurance, muscle strength. flexibility and coordination. The purpose of this study was to investigate the effect of hi-low impact aerobic exercise on balance ability in healthy college students. Methods: Volunteers were recruited amongst the students who enrolled in the hi-low impact aerobic exercise class at the beginning of the semester. A total of 16 students (9 female, 7 male) completed both the pretest and post test conducted at the beginning and end of semester respectively. During each testing session, the duration of single leg stance with eyes open or closed were measured. The dynamic posturographic test (Smart Balance Master system) was also conducted which includes sensory organization test, rhythmic weight shift test and the sustained weight shift test. The sequence of the single leg stance test and the dynamic posturographic test was randomized during each testing session. Results The results revealed that after one semester (18 hours) of hi-low impact aerobic exercise training, the students improved in the ability to stand on the left leg with eyes closed (by 7.02 seconds). Furthermore, the postural stability improved under sensory conditions of: eyes open sway-referenced surface condition (equilibrium score improved by 8.54 points), eyes closed sway-referenced surface condition (equilibrium score improved by 9.98 points). And sway-referenced surface and visual condition (equilibrium improved by 19.40 points) (p<0.05). Discussion & Conclusion: In summary, the study revealed significant training effect on single and bipedal stance stability under varying sensory conditions after one semester of hi-low impact aerobic exercise training. Future study may examine the effects of adding specific balance training programs to the routine training of athletes.