Habituation of sleep to road traffic noise by Actiwatch

Actiwatch 使睡眠习惯适应道路交通噪音

• 批准号: 10670314
• 负责人: KAWADA Tomoyuki
• 金额: $ 1.15万
• 依托单位: Gunma University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10670314/
• 关键词: Road traffic noise; Habituation; Sleep polysomnography; Activity monitoring; 作動; ポリグラフ; 体動; なれ

The habituation of sleep to road traffic noise was evaluated by body movement using wrist accerelometer and also sleep polygraphy.Subjects were four 21-year old students and they slept for 17 nights independently in a sleep laboratory. From fifth to 14th nights, road traffic noise was exposed all-night long. From fifth to 17th night, consecutive experiments were conducted. The daily life is not limited. They usually go to bed at 22 o'clock and gets up around seven o'clock in the next morning. ACTIWATCH【encircledR】 was installed in the wrist of their recessive arms. The sampling frequency was 32Hz and sensitivity was 0.05G, counting for one minute as a unit. The number of body movement was calculated by the summation in the number of active electricity. If the count is 40 or over, we judged it as awakening. Though under 40, n(e-2)×0.04+n(e-1)×0.2+n(e)+n(e+1)×0.2+n(e+2)×0.04 exceeds 40, then we judged it as awakening. By this algorithm, the agreement between ACTIWATCH【encircledR】 and sleep polygraph was 87% on average by calculating 18 nights.There was no trend in activity of mental muscle. Sleep latency in subject A in the last three days increased rapidly. Body movement % for all-night long decreased significantly in subject B. There was a significant relationship between body movement % and activity of mental muscle by sleep polygraphy.A significant increase of body movement in MT was recognized in subjects B, C, D. A significant increase of body movement in REM was recognized in subjects A, B, D. The latter fact is not logical because of drop in muscle tonus. There was a significant decrease of body movement in slow wave sleep in subject D.Body movement by accerelometer seems to be a good indicator for monitoring the effect of noise on sleep from the point of simplicity. As some individual differences are existed, much more cases are needed to check the validity using sleep polygraphy.

研究对象为4名21岁的大学生，他们在睡眠实验室中独立睡眠17个晚上。5日至14日晚，道路交通噪声暴露一整夜。从第5天晚上到第17天晚上，进行连续实验。日常生活不受限制。他们通常22点睡觉，第二天早上7点左右起床。ACTIWATCH[encircledR]被安装在他们隐性手臂的手腕上。采样频率为32 Hz，灵敏度为0.05G，以分钟为单位计数。身体运动的次数由有功电的次数之和计算。如果计数是40或以上，我们判断为觉醒。40岁以下，n（e-2）×0.04+n（e-1）×0.2+n（e）+n（e+1）×0.2+n（e+2）×0.04超过40，则判定为觉醒。通过这种算法，通过计算18个晚上，ACTIWATCH[encircledR]与睡眠多导生理记录仪的平均一致率为87%，而脑力肌肉的活动没有变化趋势。受试者A的睡眠潜伏期在最近三天迅速增加。受试者B的整夜身体运动%显著降低。睡眠多导睡眠描记法显示，躯体运动百分比与心理肌肉活动度呈显著相关，B、C、D组在MT时躯体运动显著增加。在受试者A、B、D中，REM中的身体运动显著增加。后一个事实是不符合逻辑的，因为肌肉紧张度下降。受试者D在慢波睡眠中的身体运动显著减少。从简单的角度来看，加速度计的身体运动似乎是监测噪声对睡眠影响的良好指标。由于个体差异的存在，需要更多的病例来验证睡眠多导睡眠图的有效性。

项目成果

辛鵬,川田智之,笹澤吉明,鈴木庄亮: "Habituation of Sleep Road Traffic Noise Assessed by Pdygraphy and Rating Scale"Journal of Occupational Health. 42(1). (2000)

Shinho、Tomoyuki Kawada、Yoshiaki Sasazawa、Shosuke Suzuki：“通过 Pdygraphy 和评级量表评估睡眠道路交通噪音的习惯”《职业健康杂志》42(1)。

辛 鵬、川田智之、笹澤吉明、鈴木床亮: "Habituation of Sleep to Road Traffic Noise Assessed by Polygraphy and Rating Scale"Journal of Occupational Health. 42(1). 20-26 (2000)

Peng Shin、Tomoyuki Kawada、Yoshiaki Sasazawa 和 Tokoro Suzuki：“通过测绘和评级量表评估睡眠对道路交通噪音的习惯”，职业健康杂志 42(1)。

Xin-P, Kawada T, Sasazawa Y, Suzuki S.: "Habituation of Sleep to Road Traffic Noise Assessed by Polygraphy and Rating Scale"Journal of Occupational Health. 42(1). 20-26 (2000)

Xin-P、Kawada T、Sasazawa Y、Suzuki S.：“通过测绘和评级量表评估睡眠对道路交通噪音的习惯”职业健康杂志。