More Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration

Self-report tools that measure circadian rhythms have focused primarily on phase. We add to the sparse literature on assessing amplitude and stability. We randomly recruited 1,163 participants who completed several measures. The correlation between the LV scale (amplitude) and FR scale (stability) w...

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Autores principales:	Lee Di Milia, Simon Folkard
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	amplitude flexibility languid circadian phase resilience Psychology BF1-990
Acceso en línea:	https://doaj.org/article/8b167a908be043259314b2e5fa978c80
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spelling	oai:doaj.org-article:8b167a908be043259314b2e5fa978c802021-11-16T07:47:52ZMore Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration1664-107810.3389/fpsyg.2021.782349https://doaj.org/article/8b167a908be043259314b2e5fa978c802021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpsyg.2021.782349/fullhttps://doaj.org/toc/1664-1078Self-report tools that measure circadian rhythms have focused primarily on phase. We add to the sparse literature on assessing amplitude and stability. We randomly recruited 1,163 participants who completed several measures. The correlation between the LV scale (amplitude) and FR scale (stability) was −0.12 (p < 0.01). As expected, amplitude was negatively associated with phase (r = −0.64, p < 0.01) while stability showed a weak link with phase (r = 0.07, p < 0.05). Structural equation modeling suggested a close model-fit of the factor structure in the sample (RMSEA = 0.033). The LV scale explained 22% of the variance, while the FR scale explained 23%. Scale reliability was satisfactory for the LV scale (0.68) and good for the FR scale (0.73). Participants with low amplitude or flexible rhythms reported significantly better resilience, coping, and required less daily sleep. We constructed a composite circadian categorical variable to combine the best attributes from the LV and FR scales; participants with both low amplitude and flexible rhythms, reported significantly better resilience, coping, and less sleep need. We found rhythm amplitude decreased with age, while stability remained constant.Lee Di MiliaSimon FolkardFrontiers Media S.A.articleamplitudeflexibilitylanguidcircadianphaseresiliencePsychologyBF1-990ENFrontiers in Psychology, Vol 12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	amplitude flexibility languid circadian phase resilience Psychology BF1-990
spellingShingle	amplitude flexibility languid circadian phase resilience Psychology BF1-990 Lee Di Milia Simon Folkard More Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration
description	Self-report tools that measure circadian rhythms have focused primarily on phase. We add to the sparse literature on assessing amplitude and stability. We randomly recruited 1,163 participants who completed several measures. The correlation between the LV scale (amplitude) and FR scale (stability) was −0.12 (p < 0.01). As expected, amplitude was negatively associated with phase (r = −0.64, p < 0.01) while stability showed a weak link with phase (r = 0.07, p < 0.05). Structural equation modeling suggested a close model-fit of the factor structure in the sample (RMSEA = 0.033). The LV scale explained 22% of the variance, while the FR scale explained 23%. Scale reliability was satisfactory for the LV scale (0.68) and good for the FR scale (0.73). Participants with low amplitude or flexible rhythms reported significantly better resilience, coping, and required less daily sleep. We constructed a composite circadian categorical variable to combine the best attributes from the LV and FR scales; participants with both low amplitude and flexible rhythms, reported significantly better resilience, coping, and less sleep need. We found rhythm amplitude decreased with age, while stability remained constant.
format	article
author	Lee Di Milia Simon Folkard
author_facet	Lee Di Milia Simon Folkard
author_sort	Lee Di Milia
title	More Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration
title_short	More Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration
title_full	More Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration
title_fullStr	More Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration
title_full_unstemmed	More Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration
title_sort	more than morningness: the effect of circadian rhythm amplitude and stability on resilience, coping, and sleep duration
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/8b167a908be043259314b2e5fa978c80
work_keys_str_mv	AT leedimilia morethanmorningnesstheeffectofcircadianrhythmamplitudeandstabilityonresiliencecopingandsleepduration AT simonfolkard morethanmorningnesstheeffectofcircadianrhythmamplitudeandstabilityonresiliencecopingandsleepduration
_version_	1718426616249450496

More Than Morningness: The Effect of Circadian Rhythm Amplitude and Stability on Resilience, Coping, and Sleep Duration

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