Laboratório de Cronobiologia e Sono do Hospital de Clínicas de Porto Alegre (HCPA), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brazil.
Programa de Pós-Graduação em Psiquiatria e Ciências do Comportamento - Faculdade de Medicina, UFRGS, Porto Alegre, Rio Grande do Sul, Brazil.
BMC Psychol. 2020 Apr 17;8(1):35. doi: 10.1186/s40359-020-00397-2.
Disruption of biological rhythms has been linked to the pathophysiology of mental disorders. However, little is known regarding the rhythmicity of mood symptoms due to the lack of validated clinical questionnaires. A better understanding of the rhythmicity of mood symptoms can help identifying individuals whose severity of mood symptoms follows an altered circadian rhythm. The objective of this study was to validate the English version of the Mood Rhythm Instrument (MRhI), a self-reported measure of self-perceived rhythmicity of mood symptoms and behaviours, in a sample of the general population from Canada.
After the translation process, the final English version of the Mood Rhythm Instrument (MRhI-English) was applied on participants recruited at McMaster University and St. Joseph's Healthcare Hamilton campuses. Individuals were also asked to answer the Reduced Morningness-Eveningness Questionnaire (rMEQ).
Four hundred one individuals completed the English version of the MRhI and the rMEQ. The MRhI-English presented a Cronbach's alpha of 0.75. The factorial analysis grouped the MRhI-15 items in 3 factors (cognitive, affective and somatic), with affective items having a lower frequency of self-reported 24-h peaks. Comparison between sexes showed that women reported a higher frequency of daily peaks in irritability, anxiety, sadness and talking to friends, while men exhibited peaks more frequently in problem-solving, sexual arousal and motivation to exercise.
Our findings suggest that the English version of the MRhI displayed good internal consistency. Future directions will include the use of the MRhI instrument in individuals with mood disorders, aiming to provide a better understanding of the relationship between daily patterns of mood variability and mental health outcomes.
生物节律的破坏与精神障碍的病理生理学有关。然而，由于缺乏经过验证的临床问卷，人们对情绪症状的节律性知之甚少。更好地了解情绪症状的节律性可以帮助识别那些情绪症状严重程度遵循改变的昼夜节律的个体。本研究的目的是验证英文版的情绪节律仪（MRhI），这是一种自我报告的情绪症状和行为自我感知节律性的测量工具，在来自加拿大的一般人群样本中进行验证。
经过翻译过程后，最终的英文版情绪节律仪（MRhI-English）应用于在麦克马斯特大学和圣约瑟夫健康汉密尔顿校区招募的参与者。还要求参与者回答简化的清晨-傍晚问卷（rMEQ）。
401 人完成了英文版的 MRhI 和 rMEQ。MRhI-English 的 Cronbach's alpha 为 0.75。因子分析将 MRhI-15 项分为 3 个因子（认知、情感和躯体），情感项目报告的 24 小时高峰频率较低。性别比较显示，女性报告在易怒、焦虑、悲伤和与朋友交谈方面的日常高峰频率更高，而男性在解决问题、性唤起和锻炼动机方面的高峰频率更高。
我们的研究结果表明，英文版的 MRhI 显示出良好的内部一致性。未来的方向将包括在情绪障碍患者中使用 MRhI 仪器，旨在更好地了解情绪变异性的日常模式与心理健康结果之间的关系。
