Physical Activity, Sleep and Brain Health Based on the Glymphatic System

"1. Measuring while patients are sitting in rest for 5 minutes.~2. Supine to stand test: lying down (5 min) standing up (5 min)~3. Repeated sit stand test: sitting (10 sec) ↔ standing (10 sec), changing position every 10 seconds for 5 minutes.~4. Paced breathing in sitting position: letting patients breath 6 breaths/minute (0.1Hz) for 5 minutes.~5. Breath hold manoeuvre in sitting position: 60s normal breathing, then 32s breath hold + 88s normal breathing repeated 3 times.~6. Arithmetic stress test by giving the subject single digit addition. To give the pressure, subject needs to do as many as possible calculation within 1 minute with 1 minute break. This is repeated 3 times."