Department of Public Health, Temple University, 957 Ritter Annex, 1301 Cecil B. Moore Ave, Philadelphia, PA 19122, USA.
Int J Environ Res Public Health. 2010 Sep;7(9):3457-66. doi: 10.3390/ijerph7093457. Epub 2010 Sep 15.
The present study builds on prior research that has examined the association between children's chronic exposure to community noise and resting blood pressure and blood pressure dysregulation during exposure to acute stressors. A novel contribution of the study is that it examines how chronic noise exposure relates to blood pressure responses during exposure to both noise and non-noise acute stressors. The acute noise stressor was recorded street noise and the non-noise stressor was mental arithmetic. The sample consisted of 189 3rd and 6th grade children (51.9% percent boys; 52.9% 3rd graders) from a noisy (n = 95) or relatively quiet (n = 94) public school in the city of Pune, India. There were no statistically significant differences between chronic noise levels and resting blood pressure levels. However, relative to quiet-school children, noisy-school children had significantly lower increases in blood pressure when exposed to either an acute noise or non-noise stressor. This finding suggests that chronic noise exposure may result in hypo-reactivity to a variety of stressors and not just habituation to noise stressors.
本研究在前人研究的基础上，考察了儿童长期暴露于社区噪声与静息血压以及暴露于急性应激源时血压调节之间的关系。本研究的一个新贡献是，它考察了慢性噪声暴露与暴露于噪声和非噪声急性应激源时的血压反应之间的关系。急性噪声应激源记录为街道噪声，非噪声应激源为心算。该样本由印度浦那市一所嘈杂（n=95）或相对安静（n=94）公立学校的 189 名 3 年级和 6 年级儿童组成（51.9%为男孩；52.9%为 3 年级学生）。慢性噪声水平与静息血压水平之间没有统计学上的显著差异。然而，与安静学校的孩子相比，嘈杂学校的孩子在暴露于急性噪声或非噪声应激源时，血压升高的幅度明显较低。这一发现表明，慢性噪声暴露可能导致对各种应激源的反应低下，而不仅仅是对噪声应激源的习惯化。
