NCT06078683

Effects of Ketone Ester Consumption on Exercise Tolerance and Cardiac Function

Effects of Acute and Chronic Ketone Ester Consumption on Exercise Tolerance and Cardiac Function in Subjects With Diabetes

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 30 (estimated)
• Sponsor: Ohio State University · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

This study is being done to evaluate how a ketone ester (KE) supplement affects heart function and health in people with diabetes compared to a placebo supplement (made with standard food ingredients that do not contain ketone esters).

Detailed description

This study is a single center, randomized controlled study of up to 30 subjects with diabetes. The study is designed to compare the acute effects of KE versus an energy and volume matched placebo on cardiac function and blood flow following a meal. Eligible subjects will have a known diagnosis of type 2 diabetes and will be selected from a larger population at the Ohio State University Wexner Medical Center. Enrolled subjects will be stratified by sex to ensure equal proportions of men and women in each group (KE and placebo) and then randomly assigned (1:1) to a group, before washing out and crossing over to the other group (KE or Placebo). The order of treatment will be randomized such that half the cohort starts first with KE, and the other half with Placebo. CMR will be performed on the days of supplement ingestion. CPET may be performed prior to starting the first intervention. Following a 2-wk washout period, each patient will replicate the acute CMR visit with the opposing treatment (KE or Placebo). CMR will be used to evaluate cardiac function, myocardial blood flow, and cardiac and vascular function. CMR will provide insightful data on the magnitude, timeline, and functional impact of nutritional ketosis on cardiovascular function and myocardial blood flow in patients diagnosed with T2D.

Conditions

• Type 2 Diabetes
• Ketone Body Metabolism
• Ketones, Metabolism

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Ketone Ester Acute	Participants will undertake a controlled feeding intervention where they will consume 25g of C8 Ketone Diester with a meal, and images obtained before and after consumption. The supplement powder contains 12.5 g C8 Diester, sodium caseinate and soluble corn fiber, per serving. The powder contains 120 kcal, 0 g fat, 3 g carbohydrate, and 0 g protein. A standardized meal will be provided to subjects to consume with their allocated supplement during the MRI visits. This meal is formulated with whole foods (i.e. chicken, rice, and a fruit bar) as a mix of macronutrients (29% protein, 3% fat, and 68% carbohydrate - not including the supplements). The meal consists of \~700kcal of food and will be standardized between all visits and subjects.
DIETARY_SUPPLEMENT	Placebo Acute	Participants will undertake a controlled feeding intervention where they will drink two servings of the placebo with a meal, and images obtained before and after consumption. The placebo is flavor, energy, volume, and macronutrient matched will be given to patients as part of the placebo arm of the study. This placebo will not contain any BHB, which will be replaced with a similar caloric content of fat in the form of canola oil.

Timeline

• Start date: 2023-06-06
• Primary completion: 2027-08-31
• Completion: 2027-08-31
• First posted: 2023-10-12
• Last updated: 2026-04-03

Locations

1 site across 1 country: United States