Physical activity alleviates negative effects of bedroom light pollution on blood pressure and hypertension in Chinese young adults

被引:11
作者
Xu, Yu-xiang [1 ]
Zhou, Yi [1 ]
Huang, Yan [1 ]
Yu, Yang [1 ]
Li, Jing-ya [2 ]
Huang, Wen-juan [1 ]
Wan, Yu-hui [1 ,3 ,4 ]
Tao, Fang-biao [1 ,3 ,4 ]
Sun, Ying [1 ,3 ,4 ,5 ]
机构
[1] Anhui Med Univ, Sch Publ Hlth, Dept Maternal Child & Adolescent Hlth, Hefei, Anhui, Peoples R China
[2] Anhui Med Univ, Sch Publ Hlth, Hefei, Anhui, Peoples R China
[3] Anhui Med Univ, Key Lab Populat Hlth Life Cycle, Minist Educ Peoples Republ China, 81 Meishan Rd, Hefei 230032, Anhui, Peoples R China
[4] Anhui Med Univ, Anhui Prov Key Lab Populat Hlth & Aristogen, 81 Meishan Rd, Hefei 230032, Anhui, Peoples R China
[5] Anhui Med Univ, Sch Publ Hlth, Dept Maternal Child & Adolescent Hlth, Hefei, Anhui, Peoples R China
关键词
Light at night; Bedroom light pollution; Young adults; Blood pressure; Hypertension; Physical activity; OLDER-ADULTS; MELATONIN; NIGHT; EXPOSURE; RISK; ASSOCIATION; COMPONENTS; DISEASE; HEALTH;
D O I
10.1016/j.envpol.2022.120117
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Excessive exposure to light at night (LAN) has become a serious public health concern. However, little is known about the impact of indoor LAN exposure on blood pressure, particularly among young adults. We aimed to investigate the effects of bedroom individual-level LAN exposure in real-world environment on blood pressure and hypertension among vulnerable young adults, and to evaluate the possible buffering effect of physical activity. In this cross-sectional study, a total of 400 healthy young adults aged 16-22 years were included. Bedroom LAN exposure was recorded at 1-min intervals for two consecutive nights using a TES-1339 R illuminance meter. Blood pressure was measured three times (8-11 a.m. in the physical examination day) in the seated position using an Omron HEM-7121 digital sphygmomanometer. A wrist-worn triaxial accelerometer (ActiGraph GT3X-BT) was used to assess physical activity for seven consecutive days. Each 1 lx increase of bedroom LAN intensity was associated with 0.55 mmHg-increase in SBP (95% CI: 0.15, 0.95), 0.30 mmHg-increase in DBP (95% CI: 0.06, 0.54), and 0.38 mmHg-increase in MAP (95% CI: 0.12, 0.65). Higher levels of LAN exposure were associated with increased risk of hypertension (LAN >= 3lx vs. LAN < 3lx: OR = 3.30, 95%CI = 1.19-9.19; LAN >= 5lx vs. LAN < 5lx: OR = 3.87, 95%CI = 1.37-10.98). However, these detrimental effects of bedroom LAN exposure on blood pressure and hypertension were not observed among young adults with high MVPA (>= 2 h/day) level. MVPA can alleviate negative effects of bedroom LAN exposure on blood pressure and hypertension. Maintaining bedroom settings darkness at night may be an important strategy for reducing the risk of hypertension. Furthermore, for individuals living with high levels of indoor LAN exposure, regular physical activity may be a good option for preventing cardiovascular disease and hypertension.
引用
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页数:8
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