2.5. Questionnaire Survey
This protocol is extracted from research article:
Can Heart Rate Variability (HRV) Be Used as a Biomarker of Thermal Comfort for Mine Workers?
Int J Environ Res Public Health, Jul 17, 2021; DOI: 10.3390/ijerph18147615

A questionnaire was administered simultaneously during the experiment to assess the subjects’ thermal sensation and thermal comfort status. The questionnaires were distributed to the subjects at the beginning of the test, and the subjects were asked to fill out a thermal sensation vote in the last 1 min of the preparatory stage, and at 15 and 25 min of each stage of sitting and running. Considering that the metabolic rate of the subject in this test was relatively large, a new thermal sensation scale was obtained by modifying the thermal sensation scale proposed by the American Society of Heating, Refrigeration and Air Conditioning Engineers. The new thermal sensation scale contains 9 thermal sensation levels, which are extremely cold (−4), very cold (−3), cold (−2), slightly cold (−1), neutral (0), warm (1), hot (2), very hot (3), and extremely hot (4), respectively.

Note: The content above has been extracted from a research article, so it may not display correctly.



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