Tsyganov E P, Kolchin E V, Dupik V S
Vopr Pitan. 1984 Nov-Dec(6):31-3.
Ten male volunteers received a low-caloric diet (LCD) (under 1200 kcal) containing 49.4 g protein, 28 g fat and 181 g carbohydrates for 3 weeks, with energy expenditure amounting to about 2900 kcal/day. During the time indicated, the body mass of the test subjects dropped by 7.1%. According to subjective data the well-being, physical and mental working ability remained unchanged in the test subjects. During feeding with the LCD and making the active orthostatic test, the increment of the heart rate upon the change of the body position appeared the same as that during the comparison period. Meanwhile on the 6th day of the recovery period the increment was significantly higher than at the comparison period. The systolic, pulse and mean arterial pressure, with the test subjects fed the LCD being in the vertical position and at the recovery period, was lower than at the comparison period. The data obtained attest to a definite lowering of the orthostatic stability of man kept on the LCD for a long time and at the recovery period, with this lowering taking place chiefly at the expense of changes in the tone of peripheral blood vessels.
十名男性志愿者接受了为期三周的低热量饮食（LCD）（热量低于1200千卡），该饮食包含49.4克蛋白质、28克脂肪和181克碳水化合物，能量消耗约为每天2900千卡。在所示时间段内，受试对象的体重下降了7.1%。根据主观数据，受试对象的幸福感、身体和精神工作能力保持不变。在采用LCD饮食并进行主动直立试验期间，身体位置改变时心率的增加与对照期相同。同时，在恢复期的第6天，心率增加明显高于对照期。受试对象在采用LCD饮食处于直立位以及在恢复期时，收缩压、脉压和平均动脉压均低于对照期。所获得的数据证明，长期采用LCD饮食的人和处于恢复期的人其直立稳定性明显降低，这种降低主要是由于外周血管张力的变化所致。
