Track topics on Twitter Track topics that are important to you
Drinking ice water is a common daily activity. The safety of ice water ingestion has been questioned due to its possible deleterious effect on heart rate or cardiac rhythm, especially in patients with acute myocardial infarction. Thus, we investigated the heart rate variability (HRV) before and after ice water ingestion in normal subjects to delineate the possible effect of ice water ingestion on autonomic nervous modulation.
Subjects were volunteers who came to the hospital to receive routine health examination. They were randomly assigned to drinking 250 ml of ice water or room temperature water. Twenty-eight subjects in the room temperature water ingestion group and 25 subjects in the ice water ingestion group were studied. The relationships between the change in HRV measures before and after water ingestion and clinical parameters were assessed by correlation analysis.
After ice water ingestion, the percentage change in mean RR intervals (RRIs) (4 +/- 4 vs. -1 +/- 4, P < 0.001), standard deviation of RRIs (19 +/- 35 vs. 0 +/- 21, P = 0.018), high-frequency power (64 +/- 90 vs. -3 +/- 41, P < 0.001), and normalized high-frequency power (39 +/- 99 vs. -5 +/- 31, P = 0.038) were higher, while the percentage change in low-/high-frequency power ratio (3 +/- 92 vs. 44 +/- 97, P = 0.017) was lower, when compared with those after the room temperature water ingestion.
Ice water ingestion can decrease heart rate through temperature stimulus-mediated vagal enhancement in healthy subjects.
Institute of Traditional Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan.
This article was published in the following journal.
Name: Clinical autonomic research : official journal of the Clinical Autonomic Research Society
There is conflicting evidence as to whether water drinking elicits a pressor response in healthy young adults. The inclusion of a variable number of women may have contributed to the discrepancies fou...
Patients with acute whiplash-associated disorder (WAD) demonstrate an inefficient endogenous pain inhibition and may experience a dysfunction in autonomic nervous system reactivity to pain. This study...
Triptans, which activate 5-hydroxytryptamine (5-HT)-1B/1D receptors in cerebral arteries, are very effective in aborting attacks of migraine. Although activation of 5-HT-1B/1D receptors diminishes the...
Cortical and autonomic arousals have been found to be closely associated. As arousal events are not evenly dispersed across sleep, we hypothesized the relationship between high frequency electroenceph...
Flavanoids may have a beneficial effect on blood pressure (BP) and endothelial function. There is however, limited data on this effect during a longer period (8 weeks) and no data on the effect on EPC...
In this study the investigators propose to assess the hemodynamic response to the ingestion of 16 fl oz of water. The investigators will test the hypothesis that water ingestion will incr...
Since Tai Chi Chuan (TCC) training has been shown to be beneficial to the cardiopulmonary function of the subject, TCC might have a beneficial effect on the pulmonary function, autonomic n...
The principal objective of this research is the evaluation of the effect of mineralized water consumption upon evolution of LDL Cholesterol and triglycerides, compared to a low mineralized...
The purpose of the study is to determine if pyridostigmine bromide improves heart rate variability of type 2 diabetes mellitus subjects with cardiovascular autonomic neuropathy.
In this functional magnetic resonance imaging study, effects of different information of fat content of high or low fat will be examined in FD patients and healthy volunteers (n=30, respec...
Agents affecting the function of, or mimicking the actions of, the autonomic nervous system and thereby having an effect on such processes as respiration, circulation, digestion, body temperature regulation, certain endocrine gland secretions, etc.
Adverse effect upon bodies of water (lakes, RIVERS, seas, groundwater etc.) caused by CHEMICAL WATER POLLUTANTS.
A condition where damage to the peripheral nervous system (including the peripheral elements of the autonomic nervous system) is associated with chronic ingestion of alcoholic beverages. The disorder may be caused by a direct effect of alcohol, an associated nutritional deficiency, or a combination of factors. Clinical manifestations include variable degrees of weakness; ATROPHY; PARESTHESIAS; pain; loss of reflexes; sensory loss; diaphoresis; and postural hypotension. (From Arch Neurol 1995;52(1):45-51; Adams et al., Principles of Neurology, 6th ed, p1146)
Loss of detectable antigen from the surface of a cell after incubation with antibodies. This is one method in which some tumors escape detection by the immune system. Antigenic modulation of target antigens also reduces the therapeutic effectiveness of treatment by monoclonal antibodies.
The effect of GLOBAL WARMING and the resulting increase in world temperatures. The predicted health effects of such long-term climatic change include increased incidence of respiratory, water-borne, and vector-borne diseases.
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...
Cardiovascular disease (CVD)
Acute Coronary Syndromes (ACS) Blood Cardiovascular Dialysis Hypertension Stent Stroke Vascular Cardiovascular disease (CVD) includes all the diseases of the heart and circulation including coronary heart disease (angina...
Cardiology is a specialty of internal medicine. Cardiac electrophysiology : Study of the electrical properties and conduction diseases of the heart. Echocardiography : The use of ultrasound to study the mechanical function/physics of the h...