Thermal and humidity changes on body surface of primary schoolchildren in different activities and their influence on school uniform design

To make a better understanding of the influence of the thermal and humidity changes on body surface of primary schoolchildren in different activities on school uniform design,a series of related experiments were conducted: 50 primary schoolchildren were required to perform such three actions as rest with sitting posture,piaffe,and run fast,and their skin temperatures and humidity on 8 sites like chest,armpit,etc. were measure. The collected data reveal that the highest temperature and lowest humidity are observed in rest with sitting posture. While running,skin temperature is the lowest and relative humidity is the highest, in particular, at armpit, chest, back and neck. Based on the experimental results, the influences of primary schoolchildren thermal and humidity changing characteristics on determining material properties and structure design of school uniform are discussed, along with design principles of school uniform when considering their functionality.