Cheong So-Min, Gaynanova Irina
Department of Public Service & Administration, Texas A&M University, College Station, TX, USA.
Department of Biostatistics, University of Michigan, Ann Arbor, MI, USA.
Digit Health. 2024 Mar 24;10:20552076241241509. doi: 10.1177/20552076241241509. eCollection 2024 Jan-Dec.
This study assesses the person-specific impact of extreme heat on low-income households using wearable sensors. The focus is on the intensive and longitudinal assessment of physical activity and sleep with the rising person-specific ambient temperature.
This study recruited 30 participants in a low-income and predominantly Black community in Houston, Texas in August and September of 2022. Each participant wore on his/her wrist an accelerometer that recorded person-specific ambient temperature, sedentary behavior, physical activity intensity (low and moderate to vigorous), and sleep efficiency 24 h over 14 days. Mixed effects models were used to analyze associations among physical activity, sleep, and person-specific ambient temperature.
The main findings include increased sedentary time, sleep impairment with the rise of person-level ambient temperature, and the mitigating role of AC.
Extreme heat negatively affects physical activity and sleep. The negative consequences are especially critical for those with limited use of AC in lower-income neighborhoods of color. Staying home with a high indoor temperature during hot days can lead to various adverse health outcomes including accelerated cognitive decline, higher cancer risk, and social isolation.
本研究使用可穿戴传感器评估极端高温对低收入家庭的个体特定影响。重点是随着个体特定环境温度升高，对身体活动和睡眠进行密集且纵向的评估。
本研究于2022年8月和9月在得克萨斯州休斯敦一个低收入且主要为黑人的社区招募了30名参与者。每位参与者在其手腕上佩戴一个加速度计，该加速度计在14天内记录个体特定的环境温度、久坐行为、身体活动强度（低强度以及中等到剧烈强度）和睡眠效率，为期24小时。使用混合效应模型分析身体活动、睡眠和个体特定环境温度之间的关联。
主要发现包括随着个体水平环境温度升高，久坐时间增加、睡眠受到损害，以及空调的缓解作用。
极端高温对身体活动和睡眠有负面影响。对于有色人种低收入社区中空调使用受限的人群而言，这些负面后果尤为严重。炎热天气下待在室内温度较高的家中会导致各种不良健康后果，包括认知能力加速下降、患癌风险增加以及社交隔离。
