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Heart Rate Response to Caffeine Inge...

Wright, Kelsey.

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Heart Rate Response to Caffeine Ingestion as a Predictor of Magnitude and Direction of Blood Pressure Changes.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Heart Rate Response to Caffeine Ingestion as a Predictor of Magnitude and Direction of Blood Pressure Changes./
作者:	Wright, Kelsey.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2018,
面頁冊數:	62 p.
附註:	Source: Masters Abstracts International, Volume: 58-01.
Contained By:	Masters Abstracts International58-01(E).
標題:	Nutrition. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10932064
ISBN:	9780438309241

Heart Rate Response to Caffeine Ingestion as a Predictor of Magnitude and Direction of Blood Pressure Changes.
Wright, Kelsey.

Heart Rate Response to Caffeine Ingestion as a Predictor of Magnitude and Direction of Blood Pressure Changes. - Ann Arbor : ProQuest Dissertations & Theses, 2018 - 62 p.

Source: Masters Abstracts International, Volume: 58-01.

Thesis (M.S.)--Saint Louis University, 2018.

A number of studies have been conducted to track the blood pressure (BP) response to caffeine and most indicate that caffeine modestly increases blood pressure. However, the variability in BP responses in these studies is large, indicating that some individuals show increases in BP while others experience decreases in BP. We evaluated the hypothesis that changes in heart rate (HR) after caffeine ingestion may be predictive of the direction and magnitude of changes in BP, such that larger increases in HR are correlated with larger increases in BP. The study was a double-blind, randomized sequence crossover trial with each participant taking part in both a placebo and treatment trial. Blood pressure, heart rate, and heart rate variability were measured every 15 minutes for two hours after ingestion of caffeine. Results show a positive correlation between mean HR and mean systolic blood pressure (SBP) (p=0.04) along with HR and mean arterial pressure (MAP) (p=0.04). A multivariate regression analysis indicated that the primary predictor of all mean postprandial blood pressures was mean postprandial HR. The low frequency (LF) power response correlated with the change in both SBP and MAP. A multivariate regression analysis also indicated that the fasting to postprandial rise in all blood pressures was predicted by LF responses. Variability in BP and HR responses was large with changes in BP ranging as low as -17.3 mmHg for DBP and as high as +8.5 for SBP. In conclusion, results from this study highlight the large variability of BP responses to caffeine and provide evidence that HR responses and autonomic nervous system responses modulate this effect.

ISBN: 9780438309241Subjects--Topical Terms:

517777
Nutrition.

Heart Rate Response to Caffeine Ingestion as a Predictor of Magnitude and Direction of Blood Pressure Changes.
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