- Research Article
- 10.1093/sleep/zsaf090.0523
0523 Does Sleep Reactivity Moderate the Association Between Daily Fluctuations in Stress and Sleep Onset and Maintenance Problems?
- May 19, 2025
- SLEEP
- Mara Egeler + 3 more +3
Introduction Sleep reactivity, or the tendency to experience sleep disturbances in response to stressful life events, is considered to be a vulnerability factor for insomnia. According to the sleep reactivity hypothesis, those individuals with high sleep reactivity tend to experience greater sleep onset and maintenance problems following a stressor. Few studies, however, have observed whether this phenomenon occurs at the daily level. That is, are day-to-day fluctuations in stress related to changes in sleep onset and maintenance problems among individuals with greater sleep reactivity? Methods Participants included 60 adults from the greater Northwest Arkansas area (63.9% White, 67.2% Female, 30-79 years old) who completed 10 consecutive days of sleep monitoring. Sleep was assessed objectively through actigraphy and subjectively through sleep diaries. Variables examined included actigraphy and diary based total sleep time (TST) and total wake time (TWT). Sleep reactivity was assessed using the Ford Insomnia Response to Stress Test (FIRST). Daily stress level was assessed using daily diaries. Participants were asked to rate how “stressed they were that day” on a scale of 1 (being not stressed at all) to 7 (being extremely stressed). Linear regression models were conducted with sleep variables as the outcome. Daily stress and FIRST scores were mean-centered and entered as independent variables. Race, gender, and age were entered as covariates. Results FIRST scores were associated with lower diary TST (β = -2.76, p = 0.02) and greater diary TWT (β = 0.18, p < 0.01). Daily stress was not found to be associated with any sleep variable. FIRST score was not found to moderate the relationship between daily stress level and diary TST (β = 0.63, p = 0.19), diary TWT (β = -0.03, p = 0.13), actigraphy TST (β = 0.54, p = 0.18), or actigraphy TWT (β = 0.07, p = 0.56). Conclusion While sleep reactivity (as assessed via the FIRST) has been consistently linked to greater risk for developing insomnia disorder, the data from the present study suggest that this effect may be cumulative and not observed at the daily level. Support (if any) Graduate-Professional Student Congress Tiffany Marcantonio Research Grant
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