Photo of Saurabh Thosar, Ph.D., M.S., OTR/L

Saurabh Thosar Ph.D., M.S., OTR/L

Saurabh received a B.O.Th in Occupational Therapy from Maharashtra University of Health Science in India, an M.S. in Movement Sciences from the Univ. of Illinois Chicago, and a Ph.D. in Human Performance (Physiology) from Indiana Univ. Bloomington. He is a certified clinical exercise specialist and licensed occupational therapist. Saurabh joined Dr. Shea's group as a postdoctoral fellow in January 2014 and has received a fellowship from the National Space Biomedical Research Institute, an early clinical investigator award from the Medical Research Foundation of Oregon, and a postdoctoral fellowship from the National Institutes of Health. Dr. Thosar studies the interactions between sleep, circadian rhythms and physical inactivity/activity as they relate to cardiovascular disease; and the development of chronotherapeutic countermeasures to cardiovascular risks in vulnerable populations.

Areas of interest

  • Inactivity and exercise physiology
  • vascular function assessment
  • circadian rhythms
  • cardiovascular disease research
  • occupational and public health
  • chronotherapeutics


  • M.S., University of Illinois, Chicago Illinois 2007
  • Ph.D., Indiana University, Bloomington Indiana 2014
  • Fellowship:

    • First award fellowship from the National Space Biomedical Research Association 10/01/2015-06/30/2016 **Relinquished to accept NIH/NHLBI F32 award
    • Ruth L. Kirschstein National Research Service Award (NRSA) Individual Postdoctoral Fellowship (Parent F32) from NHLBI/NIH 06/05/2016-06/04/2018
    • Early career Investigator grant from Medical Research Founcation of Oregon 09/01/2015-08/31/2016
  • Certifications:

    • Clinical Exercise Specialist American College of Sports Medicine 2007
    • Occupational Therapist National Board for Certification in Occupational Therapy 2007
    • Occupational Therapist Licensed in the State of Oregon 2014

Honors and awards

  • Travel Award for Outstanding Abstract Sleep Research Society, 2016
  • Best (first place) oral scientific presentation OHSU Research week, 2016
  • Travel Award Implementation Science Workshop-Sleep Research Society, 2015
  • Young Investigator Forum awardee American Academy of Sleep Medicine/NIH, Bethesda, MD, 2015

Memberships and associations

  • All India Occupational Therapy Association (AIOTA) Life Member
  • ‘GOSUMEC’, Seth. G. S. Medical College, India Life Member
  • Sleep Research Society 2014- Present
  • American Heart Association 2017- Present
  • American College of Sports Medicine 2005- Present
  • Society for Research on Biological Rhythms 2014- Present


  • Thosar, S. S., Berman, A. M., Herzig, M. X., Roberts, S. A., Lasarev, M. R., Shea, S. A. (2018). Morning impairment
    in vascular function is unrelated to overnight sleep or the inactivity that accompanies sleep. American Journal of
    Physiology-Regulatory, Integrative and Comparative Physiology. Accepted for publication.

  • Thosar, S. S., Herzig, M. X., Roberts, S. A., Berman, A. M., Clemons, N. A., McHill, A. W., Bowles, N. P., Morimoto,
    M., Butler, M. P., Emens, J. S., Shea, S. A. (2018). Lowest perceived exertion in the late morning due to effects of the
    endogenous circadian system. Epub ahead of print pii: bjsports-2018-099148. PMID: 29475839

  • Thosar, S. S., Butler, M. P., Shea, S.A. (2018). Role of the circadian system in cardiovascular disease: a double-edged
    sword. Journal of Clinical Investigation, 128(6):2157-2167. PMID: 29856365

  • Thosar, S. S., Niederhausen, M., Lapidus, J., et al. (2017). Self-regulated use of a wearable activity sensor is not
    associated with improvements in physical activity, cardiometabolic risk or subjective health status British Journal of
    Sports Medicine. Epub ahead of print. doi: 10.1136/bjsports-2017-098512. PMID: 29222201

  • Parthasarathy, S., Carskadon, M. A., Jean-Louis, G., Owens, J., Bramoweth, A., Combs, D., Hale, L., Harrison, E.,
    Hart, C. N., Hasler, B. P., Honaker, S. M., Hertenstein, E., Kuna, S., Kushida, C., Levenson, J. C., Murray, C., Pack, A.
    I., Pillai, V., Pruiksma, K., Seixas, A., Strollo, P., Thosar, S. S., Williams, N., Buysse, D. (2016). Implementation of
    Sleep and Circadian Science: Recommendations from the Sleep Research Society and National Institutes of Health
    Workshop. SLEEP. 39(12): 2061–2075. PMID: 28201795

  • Berman, Alec M., Thosar, S. S. & Shea, S. A. (2016). Are we underestimating the lifelong benefits of therapy for
    obstructive sleep apnea? Nature and Science of Sleep. 8: 87. PMID: 27051325

  • Thosar S. S., Wiggins, C. C., Shea, S. A, Wallace, J. P. (2015). Brachial artery endothelial function is stable across the
    morning hours in young men. Cardiovascular Ultrasound. 13: 42. PMID: 26438100

  • Thosar, S.S., Bielko, S., Mather, K., Johnston, D., Wallace, J. (2015). Effect of prolonged sitting and breaks in sitting
    time on endothelial function. Medicine and Science in Sports and Exercise. 47(4):843-849. PMID: 25137367

  • Thosar, S. S., Bielko, S. L., Wiggins, C. C., Klaunig, J. E., Mather, K. J., Wallace, J. P. (2015). Antioxidant Vitamin C
    prevents the decline in endothelial function during sitting. Medical Science Monitor. 21: 1015–1021. PMID: 25848890

  • Thosar, S. S., Bielko, S. L., Wiggins, C. C., Wallace, J. P. (2014). Differences in brachial and femoral artery responses
    to prolonged sitting. Cardiovascular Ultrasound. 12:50. PMID 25512175

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