登山、健行是現代人非常喜愛從事的休閒運動之一。由於扁平足弓的足部結構異常，長時間在有坡度的環境下行走，容易造成足部累積性的負荷，且極易發生疲勞和受傷的情形，因此有效分析扁平足弓在不同上坡步行時的足底壓力分佈確有其重要性。本研究以十名下肢無受過嚴重傷害之國小男性高年級學生為受試者(足弓高為1.59±0.4lcm，足長為24.6±0.49cm，身高為156.1±6.59cm，體重為54.7±10.11kg)，使用EMED- Pedar足底壓力測量系統擷取以 1.33m/sec在三個不同坡度 (0%、8.5%、15%)上走時之足底壓力的資料，以了解坡度對足底壓力所造成之影響及變化情形。所得數據經單因子變異數分析(蹠=0.05)得到以下結果：最大地面反作用力在足跟、第一蹠骨區，姆指區有顯著差異；最大足底壓力在足跟區、第－、二蹠骨區有顯著差異;壓力時間積分值在第一、二、其他蹠骨區有顯著差異；力量時間積分值在第一、其他蹠骨區，其他腳趾區有顯著差異。由以上可知坡度的改變對於足底壓力的影響很大。本研究可得到以下結論 1.在上坡行走時，地面反作用力與足底壓力分佈的位置會移至前足區，且受力有向外栘的現象；2.坡度愈往上增加，足跟區的負荷逐漸減少；3.扁平足弓在上坡走時，足中和其他蹠骨處承受很大的負荷，扁平足弓的人應加強該處保護；4.在上坡的環境行走，坡度8.5%以下可以做為長時間訓練的坡度。

　　　　　Climbing and walking has been the most popular exercise. The flat foot is easier to get fatigued and pain than normal foot, because of their structural and functional difference. So analyzing plantar pressure of flat foot when we are walking on different uphill slopes is necessary. In this study, ten health pupil without serious lower extremity injuries served as subjects. (arch height 1.59+__0.41cm, foot long 24.6+0.49cm, 156.1 +_6.59cm, 54.7+ 10.1 lkg ) .The ground reaction force and plantar pressure was measured by EMED-Pedar Foot Pressure Measuring System. Subjects were designed to walk in velocity (1.33 m/sec) on the treadmill with three different uphill slopes (096 - 8.5% - 15%) .All the data were analyzed by one-way ANOVA (a =0.05), The results were as fellow: MF were different significantly in heel, first metatarsal and great toe regions .PPP were different significantly in heel, first and second metatarsal regions .PTI were different significantly in first, second and other metatarsal regions .Fri were different significantly in first, other metatarsal and other toes regions. When slope was changed, the effects of the plantar pressure were significantly different. The conclusions o f t his study w ere a s follow: 1. When walking uphill, t he MF and t he PPP distribution would change t o forefoot a rea and centralizing region would move to outside. 2.As the treadmill gradient increased, loading decreased in the heel region. 3.When walking uphill, loading increased in the arch and other metatarsal .So the flat foot should protect these regions. 4.When walking uphill, the findings of this study suggest that long training would be best achieved under treadmill conditions less then 8.5%.