Fig. 1.

Summary of experimental protocol. 1) Application of monitor, 2) Supine rest (15 min), 3) □ Data of 6 min resting state, 4) Thigh cuff method, ■ thigh cuff inflation 2 min, ▒ thigh cuff deflation 5 min, 5) Melatonin administration, 6) Supine rest (60 min).