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目的探讨健康青年脂肪分布特征对全身重要脏器血流的影响。方法 49例青年健康志愿者,根据标准分为非超重组和超重组。超声法测量腹部及肢体脂肪厚度,计算心排出量及各部位血流量,记录血管阻力。结果男性内脏脂肪较女性明显厚〔(5.0±0.4)cm vs.(3.2±0.2)cm,P<0.01〕,腿部脂肪较女性明显薄〔(0.8±0.1)cm vs.(1.4±0.1)cm,P<0.01〕,腰臀比较女性大〔(0.90±0.01)vs.(0.83±0.01),P<0.01〕。虽然腰臀比与大腿血流量和上肢血流量显著相关,但这种相关性在男组和女组内部并不存在。超重组青年心排出量明显增多,男性超重组脑血流量增多〔(0.84±0.17)L/min vs.(1.05±0.22)L/min,P<0.05〕,脑血管阻力下降〔椎动脉:(0.66±0.10)vs.(0.57±0.07),P<0.05〕。女性超重组所有检测血流指标均数均高于非超重组,但无显著差别。结论健康青年,脂肪分布对全身重要脏器的血流分布影响不显著。
Objective To investigate the effect of fat distribution in healthy young people on the blood flow of vital organs. Methods 49 healthy young volunteers were divided into non-overweight group and overweight group according to the standard. Ultrasound measurement of abdominal and limb fat thickness, calculate the amount of cardiac output and blood flow in various parts of the record vascular resistance. Results Male visceral fat was significantly thicker than that of females 〔(5.0 ± 0.4) cm vs. (3.2 ± 0.2) cm, P <0.01〕, and leg fat was significantly thinner than females 〔(0.8 ± 0.1) cm vs. (1.4 ± 0.1) cm, P <0.01). The waist-hip ratio was significantly higher in women than in women (0.90 ± 0.01 vs. 0.83 ± 0.01, P <0.01). Although waist-hip ratio was significantly associated with thigh blood flow and upper limb blood flow, this correlation did not exist within men and women. The cardiac output of overweight group was significantly increased, the cerebral blood flow increased in overweight group (0.84 ± 0.17 L / min vs. 1.05 ± 0.22 L / min, P <0.05) 0.66 ± 0.10) vs. (0.57 ± 0.07), P <0.05〕. The average number of all blood flow indexes in the overweight group was higher than that in the non-overweight group, but there was no significant difference. Conclusion The distribution of fat in healthy young people has no significant effect on the distribution of blood flow in vital organs.