A carbohydrate meal attenuates the forearm vasoconstrictor response to lower body subatmospheric pressure in healthy young adults

Kearney, MT; Stubbs, T. A.; Cowley, A. J.; Macdonald, I. A.

doi:10.1007/bf02267719

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…Blood pressure is a dynamic variable whose values naturally change over time and within different regions of the body [31]. Following 30 min of meal ingestion, there is a fall in splanchnic vascular resistance, which results in an overall fall in total peripheral resistance [32] and this fact might explain the high diastolic blood pressure in the FST state at baseline compared to the FED state, although this change presents no clinical significance.…”

Section: Discussionmentioning

confidence: 99%

Fed and fasted states on heart rate variability, hemodynamic heart rate and blood pressure in adults submitted to moderate aerobic exercise

Rodrigues

Yamane

Gonçalves

et al. 2019

IJC Heart & Vasculature

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Background Heart rate variability (HRV) has proven to be a powerful non-invasive tool to investigate cardiac autonomic control and, seems to be influenced by nutritional status and exercise practice. However, the acute effects of fed or fasting states on HRV and blood pressure (BP) during low-to-moderate intensity aerobic exercise are currently unknown. Therefore, we investigated the baseline values and behavior of HRV, BP, and heart rate (HR) before and after low-to-moderate intensity aerobic exercise in fed and fasted states in healthy adults. Methods 12 healthy individuals with mean age (SD) 59.0 (9.1) years performed two tests on a treadmill at 80% of the mean velocity of the 6-min walking test separated by 48 h: 12 h fasted (FST) or 1 h fed (FED). HRV, BP and HR were analyzed at rest, posttest, and at the third, fifth, and seventh minutes of recovery. Results HRV and HR presented no significant alterations between nutritional conditions. HR at baseline was not different between nutritional conditions. Diastolic blood pressure was increased during the fasted baseline state. Conclusions The results of the current study provide that 12 h overnight fasting does not seem to be enough to affect significant changes in the autonomic modulation in healthy adults submitted to low-to-moderate intensity aerobic exercise.

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Section: Discussionmentioning

confidence: 99%

Fed and fasted states on heart rate variability, hemodynamic heart rate and blood pressure in adults submitted to moderate aerobic exercise

Rodrigues

Yamane

Gonçalves

et al. 2019

IJC Heart & Vasculature

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“…The coeYcient of variation for this technique in our laboratory is 11.5%. 10 Superior mesenteric artery blood flow Superior mesenteric artery flow was measured by transcutaneous Doppler ultrasound using a Diasonics Prisma system (Diasonics International, Les Ulis, France). The vessel was identified by ultrasound and the sample volume of the pulsed Doppler system was adjusted to the size of the vessel being interrogated.…”

Section: Cardiac Outputmentioning

confidence: 99%

Beneficial haemodynamic effects of insulin in chronic heart failure

Parsonage

Hetmanski

Cowley

2001

Heart

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OBJECTIVETo characterise the central and regional haemodynamic effects of insulin in patients with chronic heart failure.DESIGNSingle blind, placebo controlled study.SETTINGUniversity teaching hospital.PATIENTSTen patients with stable chronic heart failure.INTERVENTIONSHyperinsulinaemic euglycaemic clamp and non-invasive haemodynamic measurements.MAIN OUTCOME MEASURESChange in resting heart rate, blood pressure, cardiac output, and regional splanchnic and skeletal muscle blood flow.RESULTSInsulin infusion led to a dose dependent increase in skeletal muscle blood flow of 0.36 (0.13) and 0.73 (0.14) ml/dl/min during low and high dose insulin infusions (p < 0.05 and p < 0.005 v placebo, respectively). Low and high dose insulin infusions led to a fall in heart rate of 4.6 (1.4) and 5.1 (1.3) beats/min (p < 0.05 and p < 0.005 v placebo, respectively) and a modest increase in cardiac output. There was no significant change in superior mesenteric artery blood flow.CONCLUSIONIn patients with chronic heart failure insulin is a selective skeletal muscle vasodilator that leads to increased muscle perfusion primarily through redistribution of regional blood flow rather than by increased cardiac output. These results provide a rational haemodynamic explanation for the apparent beneficial effects of insulin infusion in the setting of heart failure.

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The effect on adipose tissue blood flow of isoenergetic meals containing different amounts and types of fat

et al. 2001

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OBJECTIVE:To investigate the factors regulating the increase in adipose tissue blood flow following meals. DESIGN: Eight subjects were fed three isoenergetic meals; two high-fat meals rich in either saturated or polyunsaturated fatty acids and one low-fat, high-carbohydrate meal. MEASUREMENTS: Blood samples were taken and adipose tissue blood flow was measured before and for 6 h after the meal. Plasma glucose, insulin, non-esterified fatty acid, total and chylomicron-triacylglycerol and catecholamine concentrations were measured. RESULTS: Adipose tissue blood flow rose to a peak after all three meals (P < 0.05 for each). The three meals stimulated adipose tissue blood flow at similar times. There was a marked and statistically significant similarity in the time course of changes in blood flow and insulin concentrations. In contrast, noradrenaline concentrations peaked later than adipose tissue blood flow (P ¼ 0.014). CONCLUSION: Adipose tissue blood flow may be 'carbohydrate-stimulated' rather than 'fat-stimulated', with insulin having a vasodilatory role in adipose tissue as in skeletal muscle.

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A carbohydrate meal attenuates the forearm vasoconstrictor response to lower body subatmospheric pressure in healthy young adults

Cited by 5 publications

References 34 publications

Fed and fasted states on heart rate variability, hemodynamic heart rate and blood pressure in adults submitted to moderate aerobic exercise

Fed and fasted states on heart rate variability, hemodynamic heart rate and blood pressure in adults submitted to moderate aerobic exercise

Beneficial haemodynamic effects of insulin in chronic heart failure

The effect on adipose tissue blood flow of isoenergetic meals containing different amounts and types of fat

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