Study of One-Time Infrared Sauna Use on Blood Sugar Control in Adults at Risk for Metabolic Problems

What this Trial Is About

This trial studies the effects of a single 40-minute infrared sauna session on blood sugar control in adults aged 30 to 55 who are at risk for metabolic problems like obesity. Researchers want to see if using a sauna before a meal can lower blood sugar spikes after eating and improve overall glucose control throughout the day. The study uses a randomized crossover design, comparing sauna sessions to resting sessions. Participants will first complete a sauna familiarization with two 20-minute infrared sauna exposures at 175F 79C. Then, they will undergo two lab visits one involving two 20-minute sauna sessions separated by a 5-minute break, and one with two 20-minute seated resting periods, also separated by a 5-minute break. Visits are spaced at least 72 hours apart. After each session, participants will consume standardized meals at home and wear a continuous glucose monitor CGM to track blood sugar. During visits, participants fast overnight and have blood pressure, heart rate, and body temperature measured before and after the sessions. Meals including breakfast, lunch, dinner, and a bedtime snack are provided and kept consistent across visits. Researchers will monitor glucose responses after meals and over 24 hours, along with other physiological measures. The trial ends after these assessments, with participation lasting a few weeks including familiarization and two experimental visits.

Acute Sauna Session and Glucose Control