Experimental Study on Physiological and Subjective Thermal Responses of Different Age Groups Under Stepwise Temperature Changes

doi:10.12068/j.issn.1005-3026.2025.20240209

Abstract

Abstract:

Taking Shenyang shopping malls as the research subject， this study investigated the temporal variations in physiological parameters and subjective evaluations among different age groups under stepwise temperature changes during moderate activity. A total of 60 participants were recruited. The experiment involved cold exposure at -12 ℃ and indoor exposures at 18 ℃ and 24 ℃. Participants underwent three successive phases for experimental research： hot， cold， and hot exposure. The results show that it takes approximately 18 minutes for the human body to reach a new physiological steady state after cold exposure， with children demonstrating quicker recovery time. Blood pressure varies significantly under stepwise temperature changes， with the variation range in the children group approximately 2.5 times that of the middle-aged group. LF/HF （low frequency/high frequency） shows significant differences among different age groups. The LF/HF value is significantly influenced by different age groups and environmental temperature conditions and can be used as a potential indicator for evaluating thermal comfort of the human body under various environmental conditions.

Key words: stepwise temperature change, age group, physiological parameter, thermal comfort, thermal sensation

CLC Number:

TU 111.2

Xiao-meng SI, Jiu-hong ZHANG, Jiang AN, Ming-xiao MA. Experimental Study on Physiological and Subjective Thermal Responses of Different Age Groups Under Stepwise Temperature Changes[J]. Journal of Northeastern University(Natural Science), 2025, 46(11): 154-162.

Figures/Tables 15

References 22

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测量参数	设备型号	量程	精度
空气温度/℃	JT2180	-20~85	±0.5
黑球温度/℃	JT2180	-20~85	±0.5
空气流速/（m·s^-1）	JT2180	0.05~2.0 2.0~5.0	±(0.05+2%) ±(0.10±2%)
相对湿度/%	JTR08	0~100	±1.5

测量参数	设备型号	量程	精度
空气温度/℃	JT2180	-20~85	±0.5
黑球温度/℃	JT2180	-20~85	±0.5
空气流速/（m·s^-1）	JT2180	0.05~2.0 2.0~5.0	±(0.05+2%) ±(0.10±2%)
相对湿度/%	JTR08	0~100	±1.5

年龄组	年龄/岁	总计人数	身高/cm	体重/kg
儿童	6~12	15	128.4±12.6	28.5±7.6
青少年	13~18	15	158.8±8.6	58.2±4.4
青年	19~44	15	167.9±9.5	69.2±10.3
中年	45~59	15	165.7±8.6	58.9±11.2

年龄组	年龄/岁	总计人数	身高/cm	体重/kg
儿童	6~12	15	128.4±12.6	28.5±7.6
青少年	13~18	15	158.8±8.6	58.2±4.4
青年	19~44	15	167.9±9.5	69.2±10.3
中年	45~59	15	165.7±8.6	58.9±11.2

阶段	具体时刻/min	18 ℃工况		24 ℃工况
阶段	具体时刻/min	平均皮肤温度/℃	p值（前后对比）	平均皮肤温度/℃	p值（前后对比）
降温	11	33.0±0.7 ℃	p<0.01**	33.4±0.2 ℃	p<0.001***
降温	15	30.4±1.3 ℃	p<0.01**	30.9±0.4 ℃	p<0.001***
升温	41	27.0±1.7 ℃	p<0.01**	27.5±0.6 ℃	p<0.001***
升温	45	30.1±1.0 ℃	p<0.01**	31.1±0.4 ℃	p<0.001***
热适应	10	33.2±0.8 ℃	p<0.01**	33.4±0.2 ℃	p=0.402
热适应	70	32.5±0.9 ℃	p<0.01**	33.5±0.3 ℃	p=0.402