Faculty Profiles

Colleges and Departments

Dr. S Gregory Marshall

  • Professor - College of Health Professions
  • Professor - Department of Respiratory Care
  • Christopher, Russian J (Principal), Percent Contribution: %25, Sam Gregory (Co-Principal), Percent Contribution: %25, Waugh, Jonathan (Supporting), Percent Contribution: %25, Dunlevy, Crystal, Percent Contribution: %25. Critical Thinking and Clinical Judgement Skills in Recent Graduates of Associate Degree and Baccalaureate Degree Programs, American Association for Respiratory Care, Private / Foundation / Corporate, $48950. (Funded: October 1, 2018 - September 30, 2019). Grant.
  • Marshall, Sam Gregory. Texas State Athlete Sleep Wellness Program — Development Grant, $10000.00. (Funded: 2007). Grant.
  • Marshall, Sam Gregory. Texas State Athlete Sleep Wellness Program — Development Grant, $13500.00. (Funded: 2006). Grant.
  • Marshall, Sam Gregory. Texas State Football Sleep Wellness Program, Respironics Phillips Corp., $23772.50. (Funded: 2006). Grant.
  • Marshall, Sam Gregory. Respironics Phillips Corp., Texas State Football Sleep Wellness Program, $9985.00. (Funded: 2006). Grant.
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  • Marshall, S. G. (2025). Regulation of Breathing. In Egan’s Fundamentals of Respiratory Care (13th ed). St. Louis, MO, USA: Elsevier.
  • Marshall, S. G. (n.d.). Physiology of Sleep Disordered Breathing. In Respiratory Care Anatomy and Physiology: Foundations for Clinical Practice (pp. 247–266). St. Louis, MO, USA: Elsevier.
  • Johnson, M. L., Marshall, S. G., Kelemen, W. L., & Westerberg, C. E. (2019). The effects of a single night of continuous positive airway pressure on memory in patients with obstructive sleep apnea. Sleep, 42(A33).
  • Marshall, S. G. (2017). Physiology of Sleep Disordered Breathing. In Respiratory Care Anatomy and Physiology. Philadelphia, PA, USA: Mosby/Elsevier.
  • Marshall, S. G., Henry, R. H., & Russian, C. J. (2016). Right versus left prong nasal cannula flow rate delivery and the effects of nasal cycling on inspired F102 in an adult anatomic model. Journal of Respiratory Care, 61, 397–404. https://doi.org/10.4187/respcare.04169
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  • Award / Honor Nominee: Service Excellence Award, College of Health Professions. 2016
  • Award / Honor Recipient: Dedication of Service Award, Texas Society for Sleep Professionals. October 2015
  • Award / Honor Recipient: Texas State University Service Award for "Thirty-five Years of Service". September 1, 2015
  • Award / Honor Nominee: Teaching Excellence Award, College of Health Professions. 2013
  • Award / Honor Recipient: Alpha Chi National Honor Society Favorite Professor Award, Alfred H. Nolle Chapter, Texas State University. 2011
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  1. Texas Medical Board -- Texas Board for Respiratory Care

  2. Other

    Department of Physical Therapy

  3. Round Rock Chamber of Commerce Annual Awards Banquet

  4. Vice President

    Coalition for Baccalaureate & Graduate Respiratory Therapy Education, Executive Board of Directors

  5. Member

    Virginia Academy of Sleep Medicine

  6. Other

    Coalition for Baccalaureate & Graudate Respiratory Therapy Education

  7. View all activities