NCT06341179: More2Sleep

Effect of Sleep Extension on Body Weight and Learning in Children (More2Sleep)

Recruiting now NA Last updated 25 November 2025

What this trial tests

NA trial testing Sleep extension in Sleep Duration in 142 participants. Currently enrolling.

Timeline

13 August 2024

Primary endpoint
31 December 2027

31 December 2028

Quick facts

Lead sponsor	University of Copenhagen
Phase	NA
Status	Recruiting now
Study type	INTERVENTIONAL
Allocation	randomized
Design	parallel
Masking	none
Primary purpose	treatment
Enrollment	142
Start date	13 August 2024
Primary completion	31 December 2027
Estimated completion	31 December 2028
Sites	3 locations across Denmark

Drugs / interventions tested

• Sleep extension

Conditions studied

• Sleep Duration — all drugs for Sleep Duration →
• Child Obesity — all drugs for Child Obesity →
• Child Development — all drugs for Child Development →
• Child Behavior — all drugs for Child Behavior →

Sponsor

University of Copenhagen

Who can join

Adults 6 to 12, any sex, with Sleep Duration or Child Obesity. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

More2Sleep is a randomized, controlled, parallel trial with two groups (sleep extension vs control) including 142 school-aged children (6-12 years) who have a BMI above average, defined as age- and sex-specific BMI Z-score above zero using WHO reference standards, and habitually sleep for ≤ 9 h/night. Data will be collected before and after a 3-month sleep extension intervention, and after a 6-month follow-up (at months 0, 3, and 9). The collection of data is mainly related to the main study. However, some optional examinations will be conducted on a first come, first serve basis, consisting of substudy-I (metabolic mechanisms, n=60) and substudy-II (learning mechanisms, n=142).

The primary objective is to assess the effects of sleep extension by \~45 min/night, achieved by going to bed 60-90 min earlier, on adiposity and learning ability in school-aged children who have a BMI for age and sex above average, and sleep less than recommended for their age.

Publications & conference data

2 peer-reviewed publications reference this trial (live from Europe PMC):

1. Protocol for a randomized controlled trial investigating the effects of sleep extension on body weight and learning in children (More2Sleep).
   Rasmussen CH, Neesgaard ND, Skriver-Bayer M, Muushardt CS, et al · · 2026 · PMID 42199500 · DOI 10.3389/fped.2026.1758117
2. Protocol for a randomized controlled trial investigating the effects of sleep extension on body weight and learning in children (More2Sleep)
   Rasmussen C, Neesgaard N, Skriver-Bayer M, Muushardt C, et al ·