Sleep disturbance and depressive symptoms in later-life: Cross-sectional examination of cognitive mechanisms

Brush, David; Paulson, Daniel; Legon, Manuel J. Herrera; James, Nicholas; Scheurich, Jennifer; Stevenson, Brittany L.; Dvorak, Robert D.

doi:10.1016/j.npbr.2020.05.001

Cited by 1 publication

(1 citation statement)

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“…53 Further, another study found that sleep disturbance was not associated with levels of rumination in older adults with higher inhibitory control, suggesting that inhibitory control, a component of executive function, may play a mediating role between sleep and RNT. 54 Based on our and others' findings, interventions such as meditation, that target cognitive control and/or emotion regulation may be particularly suited to improve sleep health and reduce RNT. Future research could investigate the benefits of such nonpharmacological interventions to reduce RNT and improve sleep outcomes among older adults.…”

Section: Discussionmentioning

confidence: 82%

Associations Between Repetitive Negative Thinking and Objective and Subjective Sleep Health in Cognitively Healthy Older Adults

Munns,

Demnitz-King,

André

et al. 2024

NSS

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Objective Poor sleep and high levels of repetitive negative thinking (RNT), including future-directed (ie, worry) and past-directed (ie, brooding) negative thoughts, have been associated with markers of dementia risk. The relationship between RNT and sleep health in older adults is unknown. This study aimed to investigate this association and its specificities including multiple dimensions of objective and subjective sleep. Methods This study used a cross sectional quantitative design with baseline data from 127 cognitively healthy older adults (mean age 69.4 ± 3.8 years; 63% female) who took part in the Age-Well clinical trial, France. RNT (ie, worry and brooding) levels were measured using the Penn State Worry Questionnaire and the Rumination Response Scale (brooding subscale). Polysomnography was used to assess sleep objectively, and the Pittsburgh Sleep Quality Index and the St. Mary’s Hospital Sleep Questionnaire were used to measure sleep subjectively. In primary analyses the associations between RNT and sleep (ie, objective sleep duration, fragmentation and efficiency and subjective sleep disturbance) were assessed via adjusted regressions. Results Higher levels of RNT were associated with poorer objective sleep efficiency (worry: β=−0.32, p <0.001; brooding: β=−0.26, p =0.002), but not objective sleep duration, fragmentation, or subjective sleep disturbance. Additional analyses, however, revealed differences in levels of worry between those with short, compared with typical and long objective sleep durations ( p < 0.05). Conclusion In cognitively healthy older adults, RNT was associated with sleep characteristics that have been implicated in increased dementia risk. It will take additional research to ascertain the causal link between RNT and sleep characteristics and how they ultimately relate to the risk of developing dementia.

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Section: Discussionmentioning

confidence: 82%