Abstract: Physiological characteristics of primary schoolchildren in different activities are the important factors influence on material application and structure design of school uniform. In order to develop school uniform with comfortable performance, a series of experimental works were conducted in this study for understanding physiological characteristics of primary schoolchildren in different activities. 50 primary schoolchildren were recruited and they were required to perform three actions: resting with sitting posture, marking time, and running. During the different progresses, skin temperatures and relative humidity in 8 locations of human body were collected. The experimental results reveal that values of skin temperature are maximum and values of relative humidity are minimum in resting with sitting posture. In running exercise, values of skin temperature are minimum and values of relative humidity are maximum. During 8 body locations, armhole, chest (bust), back body and neck base are the important location with significant body characteristics. Based on experimental results, detailed influences of primary schoolchildren physiological characteristics on determining of material properties and structure design are analysed and discussed. Finally, the design principles on school uniform are proposed.

Key words: primfort schoolchildren uniform, physiological feature, design, thermal and humidity change, comfort