Sleep Duration and Cardiovascular Health

This is a cross-sectional study with an optional intervention that will examine how extreme sleep durations relate to cardiovascular health, physical activity, and sleep quality by studying three groups of participants: short sleepers (≤ 6 hrs), long sleepers (≥ 9 hrs), and average duration sleepers (7-8 hrs). The optional intervention asks participants to maintain an 8-hour per night regular sleep schedule for one week.

NCT Number	NCT04804124
Lead Sponsor	Oregon Health and Science University
Conditions	Sleep, Cardiovascular Risk Factor
Enrollment	24 participants
Start Date	2021-06-09
Primary Completion	2027-09-15 (estimated)
Study Completion	2027-09-15 (estimated)
Updated on ClinicalTrials.gov	2026-08-04