- Repeated thermal therapy in a far infrared-ray dry sauna system improves impaired vascular endothelial function in patients with coronary risk factors. Journal of the American College of Cardiology 2001 Sept https://www.jacc.org/doi/10.1016/S0735-1097%2801%2901467-X
- Far infrared wavelength treatment for low back pain: Evaluation of a non-invasive device. It was concluded that use of site-specific FIR therapy over a four-week period in the workplace was associated with significant clinical improvements in pain and quality of life for office workers with previously refractory low back pain. WORK: ad journal of prevention, assessment and rehabilitation 2015 Sept https://journals.sagepub.com/doi/full/10.3233/WOR-152152
- Improved extremity tissue oxygenation with short-term exposure to textiles embedded with far infrared light emitting thermoactive particles in patients with diabetes mellitus. Short-term exposure to FIR textiles improves peripheral tissue oxygenation in patients with diabetes. Diabetes & Vascular Disease Research 2023 Apr https://pmc.ncbi.nlm.nih.gov/articles/PMC10123901/
- The effectiveness of far-infrared irradiation on foot skin surface temperature and heart rate variability in healthy adults over 50 years of age: A randomized study. Results suggest that FIR is beneficial for cardiovascular and ANS regulation. Medicine 2020 December https://journals.lww.com/md-journal/fulltext/2020/12110/the_effectiveness_of_far_infrared_irradiation_on.41.aspx