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Sleep Optimization to Improve Glycemic Targets in Adults With Type 1 Diabetes: A Randomized Controlled Parallel Intervention Trial.

Clinical visual abstract: Sleep Optimization to Improve Glycemic Targets in Adults With Type 1 Diabetes: A Randomized Controlled Parallel Intervention Trial.

Clinical Bottom Line

In a Diabetes Care randomized trial, Sleep-Opt did not improve glycemic targets or sleep parameters, although sleep improved in both intervention groups. Key reported results included A1C and CGM parameters at 12 weeks indicated no significant differences between groups.

Summary: In a Diabetes Care randomized trial, Sleep-Opt did not improve glycemic targets or sleep parameters, although sleep improved in both intervention groups. Key reported results included A1C and CGM parameters at 12 weeks indicated no significant differences between groups.

PICO Summary

ElementDetail
PopulationAdults with T1D and short (<6.5 h/night) or irregular (variability of sleep duration ≥1 h) sleep were randomly assigned to either the Sleep-Opt (n = 73) or Healthy Living control (n = 71) intervention, both of which were remotely delivered in eight sessions for 12 weeks. Primary (A1C, continuous glucose monitoring [CGM], and objective sleep) and secondary (psychological and subjective sleep) outcomes were collected at…
InterventionAdults with T1D and short (<6.5 h/night) or irregular (variability of sleep duration ≥1 h) sleep were randomly assigned to either the Sleep-Opt (n = 73) or Healthy Living control (n = 71) intervention, both of which were remotely delivered in eight sessions for 12 weeks.
ComparisonAdults with T1D and short (<6.5 h/night) or irregular (variability of sleep duration ≥1 h) sleep were randomly assigned to either the Sleep-Opt (n = 73) or Healthy Living control (n = 71) intervention, both of which were remotely delivered in eight sessions for 12 weeks.
OutcomeA1C and CGM parameters at 12 weeks indicated no significant differences between groups. Sleep duration increased at 6 weeks in both groups, but no significant differences were observed between groups at any time point. Sleep-Opt participants had reduced diabetes distress (median difference -0.18 [95% CI -0.35, -0.01]) and improved subjective sleep quality (-0.96 [-0.17, -0.23]) compared with the Healthy Living group at 6 weeks but not at other time points. A significant interaction was found suggesting the effect…
RCT Diabetes Care · 2026

Sleep Optimization to Improve Glycemic Targets in Adults...

Primary RCT · Diabetes & glycaemia

Trial design
Diabetes & glycaemia Enrolled & assessed RANDOMISED RCT Intervention Active arm n = NR Comparator Comparator n = NR A1C and CGM parameters at 12 weeks indicated no significant differences between groups.
Proportion reaching endpoint
NR Reported percentage 95% Intervention 7% Comparator ARRSee PICO outcome
Reported result
95%
Primary abstract result
Results
12
Abstract-reported estimate
Interpretation
Sleep-Opt did not improve glycemic targets or sleep parameters, although sleep improved in both intervention...
Source conclusion
Limitations
95% CI not stated
Check full paper
⬡ Bottom Line

Sleep-Opt did not improve glycemic targets or sleep parameters, although sleep improved in both intervention groups. Glycemic benefits were observed in participants with suboptimal A1C, suggesting a possible role of sleep intervention in this patient group.

Expert Commentary

This Diabetes Care randomized trial evaluated Sleep Optimization to Improve Glycemic Targets in Adults With Type 1 Diabetes: A Randomized Controlled Parallel Intervention Trial. The abstract describes the study as follows: Adults with T1D and short (<6.5 h/night) or irregular (variability of sleep duration ≥1 h) sleep were randomly assigned to either the Sleep-Opt (n = 73) or Healthy Living control (n = 71) intervention, both of which were remotely delivered in eight sessions for 12 weeks. Primary (A1C, continuous… The main reported results were: A1C and CGM parameters at 12 weeks indicated no significant differences between groups. Sleep duration increased at 6 weeks in both groups, but no significant differences were observed between groups at any time point. Sleep-Opt participants had reduced diabetes distress (median difference -0.18 [95% CI -0.35, -0.01]) and improved subjective sleep quality (-0.96 [-0.17, -0.23]) compared with the Healthy… The authors conclude: Sleep-Opt did not improve glycemic targets or sleep parameters, although sleep improved in both intervention groups. Glycemic benefits were observed in participants with suboptimal A1C, suggesting a possible role of sleep intervention in this patient group. The clinical value of the result depends on whether the trial population, comparator, follow-up and outcome match the decision in front of..

References

Martyn-Nemeth P, Duffecy J, Steffen AD, et al.. Sleep Optimization to Improve Glycemic Targets in Adults With Type 1 Diabetes: A Randomized Controlled Parallel Intervention Trial.. Diabetes Care. 2026-Jul-01. doi:10.2337/dc26-0273. PMID: 42149583.

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