Experimental study of the negative effects of raised bedroom temperature and reduced ventilation on the sleep quality of elderly subjects

Abstract

Aging populations are a world-wide concern. The Chinese demographic statistics announced in March 2021 showed that the percentage of the population 60 years old or more in China was 18.7% (260 million). People experience many physiological and psychological changes in old age, including a decrease in sleep quality and quantity and altered sleep structure. 1 Sleep disturbance of about 50% has been observed among the elderly in many countries. [2][3][4][5][6][7] Sleep disturbance is detrimental to both the physical and mental

Association of extreme heat events with sleep and cardiovascular health: A scoping review

“…Three studies, summarized in Table 1, met criteria for inclusion in the analysis. Two studies were controlled trials, 23,24 while one was an observational cohort study. 25 Huang et al recruited participants (n = 41) into one of three intervention groups or a control group to assess the effect of these interventions (subsidies for air conditioning, education about health and environmental heat, and use of sprinklers to cool home exteriors) on sleep quality and CV measurements during a heatwave.…”

“…23 Yan et al performed a controlled, cross-over trial, placing participants (n = 16) in one of four room permutations, with rooms either 27ºC or 30ºC and either employing mechanical ventilation systems to circulate ltered outdoor air or not. 24 Kim et al observed the effects of a heat wave on elderly residents of rural communities in South Korea (n = 104). 25…”

“…The three studies analyzed here report data from China, 23,24 and South Korea 25 . One of these studies was at the regional level, 25 while two were at the city level.…”

“…One of these studies was at the regional level, 25 while two were at the city level. 23,24 3. Extreme Heat Event De nitions De nitions of EHEs varied greatly.…”

“…23 In the South Korea study, the criteria for heatwave were more than two consecutive days with a maximum temperature more than 33º C. 25 Finally, the Shanghai controlled trial used indoor temperatures of 27º C and 30º C to model extreme heat exposure. 24…”