Prickly pear juice consumption after fat intake affects postprandial heart rate variability but not traditional risk factors of cardiovascular disease in healthy men

Journal article


Gouws, Caroline A., McKune, Andrew, Tee, Nicolin, Somerset, Shawn and Mortazavi, Reza. (2022). Prickly pear juice consumption after fat intake affects postprandial heart rate variability but not traditional risk factors of cardiovascular disease in healthy men. Nutrition. 96, p. Article 111555. https://doi.org/10.1016/j.nut.2021.111555
AuthorsGouws, Caroline A., McKune, Andrew, Tee, Nicolin, Somerset, Shawn and Mortazavi, Reza
Abstract

Objective
Prickly Pear (PP) fruit is proposed to have anti-atherosclerotic and anti-hyperglycemic effects. The aim of this study was to examine the effects of a single consumption of PP juice on modifiable blood and physiological markers of cardiovascular disease risk in healthy men using a postprandial hyperlipidemia model.

Methods
This was a double-blind, randomized, placebo-controlled, crossover trial with 17 healthy men (body mass index 22.6 ± 2.04 kg/m2; 29.5 ± 7.19 y of age). Participants consumed PP juice (250 mL; 45 mg betalain content; reduced fiber) or a simple placebo drink (water-based), with a high-fat muffin (50 g fat) to determine potential effects on physiologic and biological responses, for up to 3 h post-consumption (hourly, 2 sessions, 7-d washout period). Blood pressure, heart rate variability (HRV), total cholesterol (TC), triacylglycerides (TGs), low-density and high-density lipoprotein cholesterol (LDL-C and HDL-C, respectively), and glucose were measured.

Results
Key findings included a lower HRV measure after PP consumption (main effect for group, P ≤0.001–0.020) but no differences for TC, TG, LDL-C, or HDL-C.

Conclusion
Consumption of PP (with high-fat muffin), did not alter traditional cardiovascular disease risk responses but rather markers of HRV, beyond an expected increase in glucose attributed to the carbohydrate content of the trials foods. Additionally, macronutrient content is important when understanding HRV responses to meals.

Keywordsopuntia ficus indica; fiber; cholesterol; glucose
Year2022
JournalNutrition
Journal citation96, p. Article 111555
PublisherElsevier Inc.
ISSN0899-9007
Digital Object Identifier (DOI)https://doi.org/10.1016/j.nut.2021.111555
PubMed ID35167999
Scopus EID2-s2.0-85124474716
Page range1-8
Publisher's version
License
All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online26 Nov 2021
Publication process dates
Accepted21 Nov 2021
Deposited13 Mar 2023
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