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Purpose：This study was performed for find out temporal․spatial parameter of the gait according to age.
Method：Four groups of healthy people were allocated randomly in this study : groupⅠ(little child, 15), groupⅡ(child, 18) and groupⅢ(young people, 17), group(elder people, 16). This study was performed from 01 December to 31 December in 2007.
Results：The results were as follows :
1. The swing phase was the longest groupⅡ, groupⅣ was the shortest. Each groups, there was significant difference in swing phase(p<.05).
2. The stance phase was the longest groupⅣ, groupⅡ was the shortest. Each groups, there was significant difference in stance phase(p<.05).
3. The single support time was the longest groupⅡ, groupⅣ was the shortest. Each groups, there was significant difference in single support time(p<.05).
4. The double support time was the longest groupⅣ, groupⅡ was the shortest. Each groups, there was significant difference in double support time(p<.05).
5. The gait velocity was the fastest groupⅡ, groupⅠ was the slowest. Each groups, there was significant difference in gait velocity(p<.05).
6. The toe in/out was very increased groupⅣ, groupⅠ was very decreased. Each groups, there was significant difference in toe in/out(p<.05).
7. The cadence was the highest groupⅠ, groupⅣ was the lowest. Each groups, there was significant difference in cadence(p<.05).
8. The step length was the longest groupⅢ, groupⅠ was the shortest. Each groups, there was significant difference in step length(p<.05).
9. The step length asymmetry ratio was the highest groupⅣ, groupⅢ was the lowest. Each groups, there was no significant difference in step length asymmetry ratio(p>.05).
10. The single support time asymmetry ratio was the highest groupⅠ, groupⅣ was the lowest.
Each groups, there was no significant difference in single support time asymmetry ratio (p>.05).
11. The FAP was the highest groupⅢ, groupⅠwas the lowest. Each groups, there was significant difference in FAP(p<.05).