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Abstract
Aerobic Exercise Corps cétoniques Diabetes Mellitus Diabète sucré de type 2 Exercice aérobique Hémodynamique Ketone Bodies Métabolisme Type 2 Hemodynamics Metabolism
Type 2 diabetes mellitus is a global public health concern. Ketogenic diets and ketone ester supplements are emerging strategies for Type 2 diabetes mellitus management, yet their effects on post-exercise hemodynamics remain unclear. Accordingly, this study aims to investigate whether acute ketone ester supplements ingestion alters post-exercise hemodynamic responses in individuals with Type 2 diabetes mellitus and non-diabetic controls.
In a double-blind, randomized placebo-controlled trial, eighteen participants (n=9 type 2 diabetes mellitus; n=9 non-diabetic controls) ingested ketone ester supplements (ketone esters+carbohydrate) or a carbohydrate-only placebo prior to performing continuous-intensity treadmill exercise to exhaustion in a random, counter-balanced order. Central systolic blood pressure and central diastolic blood pressure, pulse wave velocity, and augmentation index were measured at baseline, immediately post-exercise, and at 15 and 45mins post-exercise. Blood glucose and blood ketones were assessed at similar timepoints, with an additional measure at 30mins post-exercise.
Ketone ester supplements significantly reduced central systolic blood pressure and central diastolic blood pressure in both groups (P<0.05). Post-exercise decreases in central systolic blood pressure and central diastolic blood pressure were greater following ketone ester supplements compared to carbohydrate-only placebo in both Type 2 diabetes mellitus and non-diabetic controls (P<0.05). Pulse wave velocity was consistently higher in Type 2 diabetes mellitus than non-diabetic controls (P<0.05) and increased immediately post-exercise before decreasing below baseline at 45mins in both groups, with no treatment differences (P>0.05). Augmentation index decreased post-exercise with no differences between ketone ester supplements and carbohydrate-only placebo. Blood glucose remained higher in Type 2 diabetes mellitus at all timepoints (P<0.05), and ketone ester supplementation did not significantly affect blood glucose or blood ketones concentrations. Acute ketone ester supplement ingestion enhanced post-exercise reductions in central systolic blood pressure and central diastolic blood pressure but did not affect pulse wave velocity, AIx, blood glucose or blood ketones in individuals with and without Type 2 diabetes mellitus, suggesting potential cardiovascular benefits independent of glycemic modulation.
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Title
Effects of ketone esters on hemodynamic responses to exercise in type 2 diabetes
Creators
B. Perry - Drexel University
M. Bruneau (Corresponding Author) - Drexel University