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- Gerber, Markus, et al.
(författare)
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Association of change in physical activity associated with change in sleep complaints : results from a six-year longitudinal study with Swedish health care workers.
- 2020
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Ingår i: Sleep Medicine. - : Elsevier. - 1389-9457 .- 1878-5506. ; 69, s. 189-197
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE: To increase our understanding of patterns of change in physical activity and sleep complaints and to test whether intra-individual changes in physical activity are correlated with intra-individual changes in sleep complaints across four measurement time-points over six years, adopting both a between-person and within-person perspective.METHODS: Data from a longitudinal cohort study were used in this research. At baseline, 3187 participants took part in the study (86% women, Mage = 46.9 years). The response rate was 84% (n = 3136) after two years, 60% (n = 2232) after four years, and 40% (n = 1498) after six years. Physical activity was assessed with the [51] widely used 4-level physical activity scale (SGPALS), and sleep complaints with three items from the Karolinska Sleep Questionnaire (KSQ). Patterns and correlations of change between physical activity and sleep complaints were examined with latent growth curve modeling.RESULTS: Changes in physical activity were associated with changes in sleep complaints across the six years. More specifically, significant associations occurred between baseline levels, correlated (between-person) change, and coupled (within-person change). These associations indicate that higher physical activity levels are not only cross-sectionally linked with fewer sleep complaints, but that increases in physical activity over time (either in comparison to others or to oneself) are paralleled by decreases in sleep complaints.CONCLUSIONS: Given that changes in physical activity and sleep are correlated, our findings indicate that it is worthwhile to initiate more physically active lifestyles in physically inactive individuals; and to ensure that those who are already physically active maintain their physical activity levels over longer periods.
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| 2. |
- Kobayashi Frisk, Mio, et al.
(författare)
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Eveningness is associated with coronary artery calcification in a middle-aged Swedish population
- 2024
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Ingår i: Sleep Medicine. - : Elsevier. - 1389-9457 .- 1878-5506. ; 113, s. 370-377
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Tidskriftsartikel (refereegranskat)abstract
- Coronary artery calcification (CAC) is an established imaging biomarker of subclinical atherosclerosis, but its relationship to diurnal preference is not well studied. We investigated the association between chronotype and CAC in the Swedish CArdioPulmonary bioImage Study (SCAPIS) pilot cohort. Participants aged 50–64 years were randomly recruited and underwent extensive examination including imaging and accelerometry-assessed physical activity. 771 participants (47.3 % male, 57.6 ± 4.4 years) were included in this cross-sectional analysis. CAC was assessed by non-contrast computed tomography, and a CAC score > 10 was considered significant calcification. Self-assessed chronotype was classified as extreme morning, moderate morning, intermediate, moderate evening, or extreme evening. 10-year risk of first-onset cardiovascular disease was estimated by the Systemic Coronary Risk Evaluation 2 (SCORE2). Significant CAC was present in 29 % of the cohort. CAC prevalence increased from extreme morning to extreme evening type (22 %, 28 %, 29 %, 27 %, 41 % respectively, p = 0.018). In a multivariate logistic regression model controlling for confounders, extreme evening chronotype was independently associated with increased CAC prevalence compared to extreme morning type (OR 1.90, [95%CI 1.04–3.46], p = 0.037). When stratified by SCORE2 risk category (low: <5 %; moderate: 5 to <10 %; high: ≥10 %), significant CAC was most prevalent among extreme evening chronotypes in the low and moderate-risk groups, while chronotype seemed less important in the high-risk group (p = 0.011, p = 0.023, p = 0.86, respectively). Our findings suggest circadian factors may play an important role in atherosclerosis and should be considered in early cardiovascular prevention.
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