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Original Research Open Access


Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects

Savitri Parvatgouda Siddanagoudra, Priya Arjunwadekar.

Abstract
Background: Studies have shown a significant relationship between the autonomic nervous system and cardiovascular mortality. In autonomic failure patients, water drinking has been shown to rise in blood pressure, bradycardia, and low heart rate variability (HRV). Previous studies have shown gaps in acute effects of ice water intake, in healthy subjects. This study aimed to record HRV in healthy subjects after ice water ingestion.

Aims and Objectives: To assess frequency domain parameters of HRV before and after ingestion of water at room temperature (control group) and cold water (study group) in healthy subjects.

Material and Methods: This cross-sectional study included total 80 healthy, both gender, subjects between the age group of 18-24 years were randomly assigned into two groups. Study group ingested ice water and control group ingested normal room temperature water. Before and after water ingestion, HRV parameters were recorded and compared. Statistically data were analyzed by student’s paired and unpaired t-test.

Results: High frequency power (HFP) (858.23 ± 242 vs. 964.72 ± 232.2, P < 0.001), total power (2280 ± 524. 64 vs. 2450.14 ± 449.4, P = 0.01), and very low frequency power (743.4 ± 170.12 vs. 813.2 ± 103, P = 0.01) were increased whereas low/high frequency power ratio (LHR) (1.374 ± 0.4 vs. 1.118 ± 0.41, P = 0.03), were significantly reduced after ice water ingestion in study group compared to controls.

Conclusion: Ice water ingestion increases vagal activity in healthy subjects as indicated by high HFP and reduced LHR.

Key words: Ice Water; Heart Rate Variability; Blood Pressure; Vagal Modulation


 
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How to Cite this Article
Pubmed Style

Siddanagoudra SP, Arjunwadekar P. Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects. Natl J Physiol Pharm Pharmacol. 2017; 7(12): 1309-1312. doi:10.5455/njppp.2017.7.0621901072017


Web Style

Siddanagoudra SP, Arjunwadekar P. Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects. http://www.njppp.com/?mno=270314 [Access: December 18, 2017]. doi:10.5455/njppp.2017.7.0621901072017


AMA (American Medical Association) Style

Siddanagoudra SP, Arjunwadekar P. Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects. Natl J Physiol Pharm Pharmacol. 2017; 7(12): 1309-1312. doi:10.5455/njppp.2017.7.0621901072017



Vancouver/ICMJE Style

Siddanagoudra SP, Arjunwadekar P. Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects. Natl J Physiol Pharm Pharmacol. (2017), [cited December 18, 2017]; 7(12): 1309-1312. doi:10.5455/njppp.2017.7.0621901072017



Harvard Style

Siddanagoudra, S. P. & Arjunwadekar, P. (2017) Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects. Natl J Physiol Pharm Pharmacol, 7 (12), 1309-1312. doi:10.5455/njppp.2017.7.0621901072017



Turabian Style

Siddanagoudra, Savitri Parvatgouda, and Priya Arjunwadekar. 2017. Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects. National Journal of Physiology, Pharmacy and Pharmacology, 7 (12), 1309-1312. doi:10.5455/njppp.2017.7.0621901072017



Chicago Style

Siddanagoudra, Savitri Parvatgouda, and Priya Arjunwadekar. "Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects." National Journal of Physiology, Pharmacy and Pharmacology 7 (2017), 1309-1312. doi:10.5455/njppp.2017.7.0621901072017



MLA (The Modern Language Association) Style

Siddanagoudra, Savitri Parvatgouda, and Priya Arjunwadekar. "Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects." National Journal of Physiology, Pharmacy and Pharmacology 7.12 (2017), 1309-1312. Print. doi:10.5455/njppp.2017.7.0621901072017



APA (American Psychological Association) Style

Siddanagoudra, S. P. & Arjunwadekar, P. (2017) Effect of ice water ingestion on cardiac autonomic reactivity in healthy subjects. National Journal of Physiology, Pharmacy and Pharmacology, 7 (12), 1309-1312. doi:10.5455/njppp.2017.7.0621901072017



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