Are there any active studies on intermittent fasting in healthy young adults? (NY area)

I’m interested in intermittent fasting but I’d like to objectively track the effects beyond fat/weight loss. For example: ketone body blood concentration, respiratory exchange ratio, heart rate variability, etc.

I couldn’t find anything here but maybe I’m not looking in the right place: https://clinicaltrials.gov/ct2/results?term=intermittent+fas...