抄録
Sleep has important physical, mental and regenerative purpose in a lifetime, and a causal relationship between declining core body temperature (T_c) and sleep quality has been well documented. In this study, we investigated the effect of the "V-shape" room temperature (T_r) controlled air-conditioner system (T_r decreases 2℃ from bedtime over 3 hours and fixes 1 hour and increases 1℃ up to the time of rising)on T_c, sleep latency and sleep stage. Ten healthy male subjects participated in two experimental sleeping conditions (V-shape T_r condition and Fixed T_r condition). Initial T_r was set at 29℃ in both conditions. The fall in T_c, was grater in V-shape T_r condition than in Fixed T_r condition. The longer deep sleep was also observed in V-shape T_r condition. These results indicated that V-shape T_r control system improve sleep quality with lower T_c, during sleep.
