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Type: Journal article
Title: Blood pressure responses in healthy older people to 50 g carbohydrate drinks with differing glycaemic effects
Author: Visvanathan, R.
Chen, R.
Horowitz, M.
Chapman, I.
Citation: British Journal of Nutrition, 2004; 92(2):335-340
Publisher: C A B I Publishing
Issue Date: 2004
ISSN: 0007-1145
Statement of
Renuka Visvanathan, Richard Chen, Michael Horowitz and Ian Chapman
Abstract: The aim of the present study was to determine the effects on blood pressure response of 50 g carbohydrate drinks with differing glycaemic effects in ten healthy elderly subjects (age >65 years; randomized crossover design). Systolic (SBP), diastolic (DBP) and mean arterial (MAP) blood pressure, heart rate and plasma glucose levels were determined following ingestion of equal volumes (379 ml) of water and 50 g carbohydrate drinks with differing reported glycaemic indices (GI) (surrogate marker for glycaemic effect): (1) low-GI: Apple & Cherry Juice; (2) intermediate-GI: Fanta Orange; (3) high-glucose. Glucose (SBP and DBP P,0·001; MAP P¼0·005) and Fanta Orange (SBP P¼0·005; DBP and MAP P,0·001) ingestion caused a significant decrease in BP whilst blood pressure increased (SBP P¼0·008; MAP P¼0·005) from baseline following Apple & Cherry Juice ingestion. Water had no significant effect on postprandial blood pressure. Fanta Orange and Apple & Cherry Juice caused similar (P¼0·679) glycaemic effects, which were significantly greater than water, but lower than glucose (P,0·001). There was no significant correlation between the glycaemic effect of the carbohydrate drinks and there was no change in blood pressure from baseline (SBP r 20·123, P¼0·509; DBP r 20·051, P¼0·784; MAP r 20·069, P¼0·712). Apple & Cherry Juice and Fanta Orange had similar glycaemic effects, but differing effects on blood pressure. Therefore, it is unlikely that the glycaemic effect of a drink can be used to predict the subsequent cardiovascular response.
Keywords: glycaemic effect; blood pressure; elderly
Provenance: Published online by Cambridge University Press 09 Mar 2007
Rights: © The Authors 2004
RMID: 0020041905
DOI: 10.1079/BJN20041193
Appears in Collections:Medicine publications

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