Jissen Women\u27s University Physiology anthropology laboratory
Abstract
The purpose of this study was to observe the differences of thermoregulatory responses between normal condition (24℃RH 50%) and cold temperature condition (-30℃). Subjects were 18 healthy Japanese adult women (age : 21.5±1.1 yrs, stature : 158.9±3.3 cm, weight : 52.3±8.0 kg, fat% : 25.7±4.4%). The clothing conditions were 0.18 clo for normal condition and 2.0 clo for cold condition. The exposure time was 40 minutes for the first normal condition, 20 minutes for cold condition and 40 minutes for the second normal condition. The subjects kept a sitting position. Measurement items were rectal temperature, skin temperature, oxygen uptake and subjective sensations. We determined atsugari (susceptibility to the heat) and samugari (susceptibility to the cold) according to the subjective sensations during the first normal condition exposure. The grouping of atsugari and samugari did not always agree with the self-reported atsugari and samugari of each subject. The atsugari group had a tendency to show high peripheral skin temperature, low rectal temperature and warmer thermal sensation than samugari group. However, it was not significant. Oxygen uptake was significantly higher (p<0.05) in samugari group than atsugari group
