Janos Porszasz, M.D., Ph.D.

Dr. Porszasz is an Adjunct Professor of Medicine at the David Geffen School of Medicine and Researcher at the Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center. In 1999 he started the Pulmonary Function and Exercise Physiology Laboratories together with Richard Casaburi, Ph.D, MD. specifically for Clinical Studies in the Rehabilitation Clinical Trails Center. He is currently the co-director of the same laboratory.

Dr. Porszasz’s research interests involve exercise limitation by respiratory and cardiovascular causes, ventilatory limitation, dynamic hyperinflation and respiratory mechanics during exercise, and pulmonary hypertension. During his tenure he mentored numerous research fellows, undergraduate and graduate students and clinical fellows. Under his initiative, the laboratory developed a linearized treadmill protocol for clinical exercise testing (US patent) and an extended version this protocol can be used in assessing athletic performance during running. He also developed a breath-by-breath method for assessing dynamic airway compression by looking at the shape changes of the expiratory flow-volume curves. The latest achievement is that he led the effort to get FDA compliant approval for central CORE laboratory for processing exercise gas exchange data from six different CPET systems.

Specialty Pulmonary and Exercise Physiology and Function
Degrees M.D. (1976), Ph.D. (1996)
Areas of Expertise
  • Pulmonary function testing
  • Cardiopulmonary exercise testing
  • Ventilatory and dynamic airway limitation developing during exercise
  • Different exercise modalities (cycle ergometer vs. treadmill)
  • Rehabilitative exercise training
Years of Experience 40 Years
Publications Google Scholar