Cardiovascular and hormonal reponses to 20 min of 70° head-up tilt(HUT) were observed in 12 young men following 3 hrs supine bed-rest(BR protocol) and 30 min(control protocol)
Jae-Hoon Bae and Won-Kyun Park. (1995). Changes in Cardiovascular and Hormonal Responses to Head-up Tilt Following 3 Hours of Sipine Bed-rest. 항공우주의학, 5(2), 88–96.