Georgievskiĭ V S, Korol'kov V I, Mikhaĭlov V M
Kosm Biol Aviakosm Med. 1976 Jul-Aug;10(4):45-9.
Orthostatic tolerance of 18 healthy test subjects (three groups of 6 persons each) who were exposed to an altitude of 2200 m for 12 days and 3200 m for 12 days was studied. The first group subjects remained in bed with minimized motor activity. The second group test subjects rested in bed and twice a day performed physical exercises with energy expenditures of 300 kcal/day. The third group subjects led a normal mode of life. The studies demonstrated that a prolonged restriction of motor activity and a decrease in the blood hydrostatic pressure of healthy test subjects in highlands resulted in their diminished orthostatic tolerance. Physical exercises proved ineffective in that case. The subjects who led a normal mode of life showed increased cardiovascular reactions to orthostatic tests.
对18名健康受试者（每组6人，共三组）进行了研究，他们分别在海拔2200米处停留12天，在海拔3200米处停留12天。第一组受试者卧床休息，尽量减少运动活动。第二组受试者卧床休息，每天进行两次体育锻炼，能量消耗为300千卡/天。第三组受试者过着正常的生活方式。研究表明，在高原地区，健康受试者运动活动的长期受限以及血液静水压的降低导致他们的直立耐力下降。在这种情况下，体育锻炼被证明是无效的。过着正常生活方式的受试者对直立试验表现出增强的心血管反应。
