出版社：Brazilian Association of Sleep and Latin American Federation of Sleep Societies
摘要：There were no validation studies on portable sleep devices under different ambient temperature, thus this study evaluated the validity of wrist Actiwatch2 (AW2) or SenseWear armband (SWA) against polysomnography (PSG) in different ambient temperatures. Nine healthy young participants (6 males, aged 23.3±4.1 y) underwent nine nights of study at ambient temperature of 17 °C, 22 °C and 29 °C in random order, after an adaptation night. They wore the {AW2} and {SWA} while being monitored for {PSG} simultaneously. A linear mixed model indicated that {AW2} is valid for sleep onset latency (SOL), total sleep time (TST) and sleep efficiency (SE) but significantly overestimated wake after sleep onset (WASO) at 17 °C and 22 °C. {SWA} is valid for WASO, {TST} and {SE} at these temperatures, but severely underestimates SOL. However, at 29 °C, {SWA} significantly overestimated {WASO} and underestimated {TST} and SE. Bland–Altman plots showed small biases with acceptable limits of agreement (LoA) for {AW2} whereas, small biases and relatively wider LoA for most sleep variables were observed in SWA. The kappa statistic showed a moderate sleep–wake epoch agreement, with a high sensitivity but poor specificity; wake detection remains suboptimal. {AW2} showed small biases for most of sleep variables at all temperature conditions, except for WASO. {SWA} is reliable for measures of TST, {WASO} and {SE} at 17–22 °C but not at 29 °C, and {SOL} approximates that of {PSG} only at 29 °C, thus caution is needed when monitoring sleep at different temperatures, especially in home sleep studies, in which temperature conditions are more variable.
