This study is comparing two different diets for people with heart failure that has preserved ejection fraction (meaning your heart still pumps blood normally). You would either follow a ketogenic diet or a low-fat mixed diet. Researchers want to see if one diet helps improve your ability to exercise. To join, you need to be between 18 and 80 years old, have heart failure with normal pumping function, and be willing to be assigned to either diet. The study aims to enroll 90 participants. The current recruitment status is unclear.

Study design

This is an interventional study where participants will be randomly assigned to one of two diets. It plans to enroll 90 participants.

What's involved

For the first 6 weeks, all your food will be prepared and delivered. After that, you'll receive educational materials and coaching for about 20-22 weeks to help you maintain the diet. You will also have sensors applied at different times to monitor ketone and glucose levels, and your weight, blood pressure, heart rate, and activity will be monitored.

Compensation

All foods and/or groceries will be provided at no cost for the first six weeks of the study.

Follow-up

Your maximal exercise performance will be measured at baseline, 6 weeks, and at the end of the study (26 weeks).

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.