Figure 2.
Changes in total sleep time (total time within rest intervals actually spent sleeping) during control period (∆M = −32.95) and treatment period (∆M = 42.02).
Note: Times are in minutes.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.