Abstract
Background
Sleep insufficiency is known to negatively impact on glucose metabolism. Consequently, there is interest in determining the impact of improving sleep on glucose metabolism. We conducted a meta-analysis of studies that aimed at improving sleep using cognitive behavioural therapy for insomnia (CBT-I) and/or sleep hygiene or sleep extension on glucose metabolism.
Methods
Searches were performed on MEDLINE, EMBASE, CINAHL and Cochrane. We included studies featuring adults≥18years, a sleep intervention and glycaemic measurements. The pooled mean differences were calculated by the inverse variance method.
Results
24 studies (15 CBT-I and/or sleep hygiene; 9 sleep extension) were included. Meta-analysis of 12 studies (n = 2,044) of CBT-I and/or sleep hygiene demonstrated a significant reduction in HbA1c of 0.27% (95% CI 0.07, 0.47, I2 74%, p = 0.008) compared to control. In T2DM (n = 1,911; 9 studies), HbA1c level decrease was 0.43% (0.19, 0.67, I2 59%, p = 0.0004). There were no significant changes in fasting blood glucose analyses nor in any sleep extension intervention. For quality assessment, only 9 studies had low concern.
Conclusions
Using CBT-I and/or sleep hygiene interventions led to significant reductions in HbA1c levels, which were clinically meaningful in T2DM. Addressing sleep insufficiency should be an integral part of diabetes care.
Registration
PROSPERO Identification number: CRD42022376606.
Sleep insufficiency is known to negatively impact on glucose metabolism. Consequently, there is interest in determining the impact of improving sleep on glucose metabolism. We conducted a meta-analysis of studies that aimed at improving sleep using cognitive behavioural therapy for insomnia (CBT-I) and/or sleep hygiene or sleep extension on glucose metabolism.
Methods
Searches were performed on MEDLINE, EMBASE, CINAHL and Cochrane. We included studies featuring adults≥18years, a sleep intervention and glycaemic measurements. The pooled mean differences were calculated by the inverse variance method.
Results
24 studies (15 CBT-I and/or sleep hygiene; 9 sleep extension) were included. Meta-analysis of 12 studies (n = 2,044) of CBT-I and/or sleep hygiene demonstrated a significant reduction in HbA1c of 0.27% (95% CI 0.07, 0.47, I2 74%, p = 0.008) compared to control. In T2DM (n = 1,911; 9 studies), HbA1c level decrease was 0.43% (0.19, 0.67, I2 59%, p = 0.0004). There were no significant changes in fasting blood glucose analyses nor in any sleep extension intervention. For quality assessment, only 9 studies had low concern.
Conclusions
Using CBT-I and/or sleep hygiene interventions led to significant reductions in HbA1c levels, which were clinically meaningful in T2DM. Addressing sleep insufficiency should be an integral part of diabetes care.
Registration
PROSPERO Identification number: CRD42022376606.
Original language | English |
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Pages (from-to) | 1-17 |
Number of pages | 17 |
Journal | Diabetes & Vascular Disease Research |
Volume | 22 |
Issue number | 1 |
Early online date | 23 Jan 2025 |
DOIs | |
Publication status | Published - Jan 2025 |
Keywords
- intervention
- Sleep disorder
- systematic review and meta-analysis
- glucose metabolism
- type 2 diabetes mellitus