Publication highlights
Circadian disturbances and frailty risk in older adults
We investigated prospective associations of circadian disturbances with incident frailty in over 1000 older adults who had been followed annually for up to 16 years. We found that decreased rhythm strength, reduced stability, or increased variation were associated with a higher risk of incident frailty and faster progress of frailty over time. Perturbed circadian rest-activity rhythms may be an early sign or risk factor for frailty in older adults.
Cai R, Gao L, Gao C, Yu L, Zheng X, Bennett DA, Buchman AS, Hu K, Li P
Nature Communications
RESEARCH ARTICLE | Volume 14, Issue 1, Article 7219, November 2023


Daytime napping and Alzheimer’s dementia: A potential bidirectional relationship
Daytime napping was assessed objectively through actigraphy annually for up to 14 years. Daytime napping was modeled longitudinally with aging and Alzheimer’s progression. Our findings suggested that progression of Alzheimer’s dementia accelerated the aging-related changes in daytime napping. Our results also for the first time demonstrated directly that daytime napping and cognitionmay drive each other’s changes bidirectionally.
P Li, L Gao, L Yu, X Zheng, MC Ulsa, HW Yang, A Gaba, K Yaffe, DA Bennett, AS Buchman, K Hu, Y Leng
Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association
RESEARCH ARTICLE | Volume 19, Issue 1, Pages 158-168, January 2023
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