While numerous studies examining the effects of heat and humidity on RPE have
been performed, little research has been performed on thermal sensation scales
specifically designed for hot environments. The Rohles Thermal Scale (RTS) was
created to examine thermal perceptions in hot environmental conditions and ranges from
1 (cold), to 7 (hot) (Rohles and Nevins, 1971). Over 1600 male and female participants
performed sedentary activity in an environmental chamber and having the participants
report on sample ballots their perceptions of heat every 30 minutes over a three-hour test
trial with temperatures ranging from 62°F to 98°F and relative humidity ranging from