PRIORITY OF BLOOD-FLOW TO SPLANCHNIC ORGANS IN HUMANS DURING PREMEAL AND POSTMEAL EXERCISE

被引:27
作者
ERIKSEN, M
WAALER, BA
机构
[1] Department of Physiology, Institute of Basic Medical Sciences, University of Oslo
来源
ACTA PHYSIOLOGICA SCANDINAVICA | 1994年 / 150卷 / 04期
关键词
CARDIAC OUTPUT; DOPPLER ULTRASOUND; EXERCISE; POSTPRANDIAL CIRCULATION; SPLANCHNIC CIRCULATION;
D O I
10.1111/j.1748-1716.1994.tb09700.x
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
Cardiac output and superior mesenteric arterial flow in five healthy young men were followed using Doppler ultrasound techniques at rest and during 4 min bouts of bicycle exercise in both a pre- and a post-meal situation. The meal given was mixed and heavy, with an energy content (related to body size) of about 1400-1600 kcal (5.9-6.9 MJ). Two levels of exercise, 50-65 W and 150-200 W (about 75% of V0(2max)), were tested, with the subjects cycling in a reclining position. Superior mesenteric arterial flow increased threefold, to about 1.1 l min(-1), after the meal. During exercise in the fasting situation there were only modest changes in splanchnic vascular conductance, and moderate increases in superior mesenteric arterial flow were actually recorded. Exercise in the post-prandial state caused appreciable reductions in splanchnic vascular conductance, and a 38% reduction was observed during the most heavy exercise. However, not even such a decrease in conductance resulted in any definite reduction in superior mesenteric arterial blood flow, which was maintained at the pre-exercise level. Cardiac output increased by about 1.3 l min(-1) after the meal. The exercise-induced increases in cardiac output were of the same order in the fasting and in the post-prandial state. Variance analyses showed the high cardiac output levels reached during postprandial exercise to be no different from levels that would be reached by pure summation of the changes caused by eating alone and by exercise alone. It is concluded that blood flow to the splanchnic organs in reclining man retains its high pre- and post-prandial priority during short exercise bouts of up to 75% of V0(2max).
引用
收藏
页码:363 / 372
页数:10
相关论文
共 22 条
[1]   DISTRIBUTION OF BLOOD-FLOW IN MUSCLES OF MINIATURE SWINE DURING EXERCISE [J].
ARMSTRONG, RB ;
DELP, MD ;
GOLJAN, EF ;
LAUGHLIN, MH .
JOURNAL OF APPLIED PHYSIOLOGY, 1987, 62 (03) :1285-1298
[2]  
BURNS GP, 1969, ARCH SURG-CHICAGO, V98, P790
[3]   HEMODYNAMIC EFFECTS OF CARBOHYDRATE AND PROTEIN MEALS IN MAN - REST AND EXERCISE [J].
DAGENAIS, GR ;
ORIOL, A ;
MCGREGOR, M .
JOURNAL OF APPLIED PHYSIOLOGY, 1966, 21 (04) :1157-+
[4]   A formula to estimate the approximate surface area if height and weight be known [J].
Du Bois, D ;
Du Bois, EF .
ARCHIVES OF INTERNAL MEDICINE, 1916, 17 (06) :863-871
[5]   DYNAMICS AND DIMENSIONS OF CARDIAC-OUTPUT CHANGES IN HUMANS AT THE ONSET AND AT THE END OF MODERATE RHYTHMIC EXERCISE [J].
ERIKSEN, M ;
WAALER, BA ;
WALLOE, L ;
WESCHE, J .
JOURNAL OF PHYSIOLOGY-LONDON, 1990, 426 :423-437
[6]   IMPROVED METHOD FOR CARDIAC-OUTPUT DETERMINATION IN MAN USING ULTRASOUND DOPPLER TECHNIQUE [J].
ERIKSEN, M ;
WALLOE, L .
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, 1990, 28 (06) :555-560
[7]   COMBINED EFFECT OF EXERCISE AND DIGESTION ON HEMODYNAMICS IN CONSCIOUS DOGS [J].
FRONEK, K ;
FRONEK, A .
AMERICAN JOURNAL OF PHYSIOLOGY, 1970, 218 (02) :555-+
[8]   Physiological variations in the cardiac output of man III. The effect of the ingestion of food on the cardiac output pulse rate, blood pressure, and oxygen consumption of man [J].
Grollman, A .
AMERICAN JOURNAL OF PHYSIOLOGY, 1929, 89 (02) :366-370
[9]   AUTONOMIC NERVOUS CONTROL OF POSTPRANDIAL HEMODYNAMIC-CHANGES AT REST AND UPRIGHT EXERCISE [J].
KELBAEK, H ;
MUNCK, O ;
CHRISTENSEN, NJ ;
GODTFREDSEN, J .
JOURNAL OF APPLIED PHYSIOLOGY, 1987, 63 (05) :1862-1865
[10]   MUSCULAR BLOOD-FLOW DISTRIBUTION PATTERNS AS A FUNCTION OF RUNNING SPEED IN RATS [J].
LAUGHLIN, MH ;
ARMSTRONG, RB .
AMERICAN JOURNAL OF PHYSIOLOGY, 1982, 243 (02) :H296-H306