A recent study at Binghampton University, performed by Dr. Kenneth Mcleod, professor of bioengineering, showed conclusively that using True Wave II combination carbon and ceramic heaters in a Clearlight Sauna three times a week can eliminate an average of four percent body fat over a four month period. For a 175 pound man, that represents a reduction of seven pounds. The control group in the study showed no weight loss over the 16 month period. Additionally, the participants in the study did not change their diet or exercise patterns. Interestingly, the participants that came into use the sauna later in the day (afternoon and evening) lost significantly more body fat than those that came in the morning.
The hypothesis was that increasing core body temperature will cause an increase in human growth hormone production which will in turn help to maintain healthy blood glucose levels. When the human growth hormone in the body is increased it will help to improve body composition, increased bone mass, muscle mass and assist to decrease fat stores.
Phase One (16 week study):
Participants were exposed 3 times per week for a 45 minute infrared sauna at 110 degrees for 16 weeks. Compliance ranged from a low of 12 sessions completed to 45 sessions.
Findings: Participants who had high compliance (used the sauna regularly) had a greater loss in body fat. Participants measured up to a 4% drop in body fat over the four months. However, interestingly, those that came in late in the day or evening lost significantly more body fat than those using the sauna in the morning. The change in body fat was confirmed by measurements of serum glucose levels. Our hypothesis is that increasing core body temperature will increase human growth hormone production and that should increase serum glucose levels, which is what was found. In addition, we observed that the higher the core body temperature reached, the larger the decrease in body fat, also consistent with the HGH hypothesis.
Phase Two (8 week study):
Participants were exposed 5 times per week for a 30 minute infrared sauna at 110 degrees after 3pm. On average, the study subjects lost about 0.25% body fat per week totaling approximately 4% over 8 weeks. This resulted in approximately twice the rate of fat loss as compared to Phase 1 (8 weeks vs. 16 weeks). A control population was used in Phase Two of the study and the body fat of the control group did not change over the 8 week study.