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Finding DLMO: estimating dim light melatonin onset from sleep markers derived from questionnaires, diaries and actigraphy.
Chronobiology International ( IF 2.8 ) Pub Date : 2020-09-07 , DOI: 10.1080/07420528.2020.1809443
Andrew M Reiter 1 , Charli Sargent 1 , Gregory D Roach 1
Affiliation  

ABSTRACT

Determination of circadian phase is required to diagnose and treat circadian abnormalities, but the measurement of dim light melatonin onset (DLMO), the most common phase marker, is laborious. As sleep timing reflects circadian phase, measurement of sleep markers (e.g., sleep onset, sleep midpoint, sleep offset) provides a simple way to estimate DLMO. The study aim was to compare methods to estimate DLMO from markers derived from the Pittsburgh Sleep Quality Index (PSQI), Munich Chronotype Questionnaire (MCTQ), sleep diaries, and actigraphy. PSQI, MCTQ, and 1 week of diary and actigraphy data were collected from 72 (36 f, 36 m) healthy adults aged 23.1 (± 3.6) y prior to a laboratory sleep study. Saliva samples were collected hourly in dim light during the second evening of the study. The sleep markers most strongly associated with DLMO from each source were PSQI onset, MCTQ average midpoint, 7-d diary midpoint, and 7-d actigraphy midpoint. Estimates of DLMO as a fixed interval before the sleep marker exhibited proportional bias. DLMO estimated from regression models based on sleep midpoint from 7 d of diary or 7 d of actigraphy showed the narrowest limits of agreement with measured DLMO without proportional bias (±1.8 h and ±1.9 h, respectively). Our findings indicate none of the methods provided precise estimates of DLMO from sleep markers. The best estimates were from linear regressions on sleep midpoints from 7 d of diary or actigraphy, and these estimates of DLMO may be suitable for limited research purposes.



中文翻译:

查找DLMO:根据问卷,日记和书法的睡眠标记物估算褪黑素褪黑激素的发作。

摘要

确定昼夜节律相位是诊断和治疗昼夜节律异常所必需的,但是最常见的相位标记昏暗褪黑激素发作(DLMO)的测量很麻烦。由于睡眠时间反映了昼夜节律,因此睡眠标记(例如,睡眠发作,睡眠中点,睡眠偏移)的测量提供了一种估算DLMO的简单方法。这项研究的目的是比较从匹兹堡睡眠质量指数(PSQI),慕尼黑分型问卷(MCTQ),睡眠日记和书法作品中得出的标记估计DLMO的方法。PSQI,MCTQ以及1周的日记和书法记录数据是在进行实验室睡眠研究之前,从72位(36 f,36 m)年龄为23.1(±3.6)岁的健康成年人中收集的。在研究的第二天晚上,每小时在昏暗的光线下收集唾液样品。与每种来源的DLMO密切相关的睡眠标记是PSQI发作,MCTQ平均中点,7天日记中点和7天书法术中点。睡眠标记之前固定间隔的DLMO估计值显示出比例偏差。根据基于日记7 d或活动记录7 d的睡眠中点的回归模型估算的DLMO显示,与测得的DLMO一致的最窄限制为无比例偏差(分别为±1.8 h和±1.9 h)。我们的发现表明,没有一种方法可以从睡眠标记物提供DLMO的精确估计。最佳估计来自日记或书法的7 d睡眠中点的线性回归,这些DLMO估计可能适合于有限的研究目的。睡眠标记之前固定间隔的DLMO估计值显示出比例偏差。根据基于日记7 d或活动记录7 d的睡眠中点的回归模型估算的DLMO显示,与测得的DLMO一致的最窄限制为无比例偏差(分别为±1.8 h和±1.9 h)。我们的发现表明,没有一种方法可以从睡眠标记物提供DLMO的精确估计。最佳估计来自日记或书法的7 d睡眠中点的线性回归,这些DLMO估计可能适合于有限的研究目的。睡眠标记之前固定间隔的DLMO估计值显示出比例偏差。根据基于日记7 d或活动记录7 d的睡眠中点的回归模型估算的DLMO显示,与测得的DLMO一致的最窄限制为无比例偏差(分别为±1.8 h和±1.9 h)。我们的发现表明,没有一种方法可以从睡眠标记物提供DLMO的精确估计。最佳估计来自日记或书法的7 d睡眠中点的线性回归,这些DLMO估计可能适合于有限的研究目的。分别为9小时)。我们的发现表明,没有一种方法可以从睡眠标记物提供DLMO的精确估计。最佳估计来自日记或书法的7 d睡眠中点的线性回归,这些DLMO估计可能适合于有限的研究目的。分别为9小时)。我们的发现表明,没有一种方法可以从睡眠标记物提供DLMO的精确估计。最佳估计来自日记或书法的7 d睡眠中点的线性回归,这些DLMO估计可能适合于有限的研究目的。

更新日期:2020-09-07
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