Sleep and Cardiovascular Health in Adolescence

As with the pre-sleep arousal up- and down-regulation nights, the participant will sleep in comfortable sound-proof and temperature-controlled bedroom and will go to bed and wake up at his/her self-reported usual school-week times. On this night, pre-sleep activities include watching television or reading a book.

"On the low pre-sleep arousal night, about 30 min before lights-out, a 20 min session of relaxation-driven Virtual Reality (VR) + slow breathing will be conducted. Adolescents will be instructed to perform slow diaphragmatic breathing and to let the VR immersion guide them through this relaxation process."

"On the high pre-sleep arousal night, an anticipatory stress procedure from the Trier Social Stress Test (TSST) will be used to elicit stress-induced ANS activation in the pre-sleep period. About 30 min before lights-out participants will be told that the following morning they will need to prepare and give a 5-min speech in front of a panel of assessors who will judge their performance and ask questions. Participants will be shown the testing room (set up with chairs, video camera, microphone)."