Psychobiology and Behavior

Mission: To promote research and the advancement of knowledge of sport psychology with a particular emphasis on psychobiology and health.

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Leadership

The Psychobiology & Behavior Special Interest Group is pleased to announce its leadership transition for the upcoming term. 

We extend our sincere gratitude to our outgoing Chair, Dr. Grace Giles, and student representatives, Seana Smith & Jacob Ninneman. Simultaneously, we formally welcome our rising Chair, Dr. Katey Wilson, newly elected Co-Chair, Dr. Jacob Ninneman, and incoming student representatives, Derek Elton & Shania Kelly. We look forward to their leadership, fresh perspectives, and shared vision as they guide the group into its next chapter. 

Kathryn (Katey) Wilson, PhD, FACSM
Chair

Dr. Kathryn (Katey) Wilson is an Associate Professor with tenure at Georgia State University. Her research focuses on the relevance of personality differences for promoting physical activity and exercise behavior and understanding resultant psychological effects. She also contributes to interdisciplinary research with expertise in personality theory, quantitative analysis, and psychometrics.

Jacob Ninneman, PhD
Co-Chair

Dr. Jacob Ninneman is a post-doctoral research fellow at the University of Wisconsin-Madison. His research interests center on understanding how neurological health contributes to chronic health conditions and how lifestyle interventions, such as physical activity, could mitigate those detrimental conditions. His dissertation focused on understanding the neuroinflammatory response to exercise in chronic multisymptom illness, and his master’s thesis focused on brain structure in Gulf War Veterans with and without chronic musculoskeletal pain.

Melissa McGranahan, PhD
Professional in Training

Dr. Melissa McGranahan is a postdoctoral research fellow at Emory University School of Medicine. She received her PhD in Exercise Psychology from the University of Georgia Mary Frances Early College of Education.

Derek Elton
Student Representative

Shania Kelly
Student Representative

Research Awards or Scholarships

Marsh Center Student Research Award

Awarded annually by the Department of Kinesiology at the University of Wisconsin – Madison, this competitive award recognizes outstanding research presentations by two student members of the Psychobiology and Behavior Special Interest Group of the American College of Sports Medicine.

Awardees will receive a certificate of achievement, a $500 award, and recognition at the ACSM Annual Meeting. Award winners will also be expected to present the highlights of their research at the special interest group meeting.

Jennifer Forse (University of Pittsburgh) received the Marsh Award in the psychobiology category for her work entitled Sex Differences in Salivary Stress Biomarkers Responses to 10-week USMC Officer Candidate School Training and Kennedy Guess (University of North Carolina at Chapel Hill) received the Marsh Award in the behavior category for her work entitled The Effect of Sex and Sport on Computerized Neurocognitive Tests.

Well done! 

Representation at the 2026 ACSM Annual Meeting

The Psychobiology & Behavior Special Interest Group continues to grow its membership and representation at the 2026 ACSM Annual Meeting. Thank you to all who submitted sessions and abstracts for the annual meeting this year. Our members delivered 10.5 hours of programming this year in the form of tutorial lectures, symposia, and highlighted symposia, and slotted 151 abstracts in free communication and thematic poster sessions. Very impressive! 

Attendance was strong at this year’s Psychobiology and Behavior Special Interest Group meeting in Salt Lake City, UT.
Dr. Andreas Stamatis (University of Louisville) led a clinical workshop entitled “Performance Under Pressure: Applied Mental Toughness Strategies for Professionals in Health, Sport, and Human Potential” at this year’s ACSM Annual Meeting in Salt Lake City, UT.
Derek Elton (left) of Michigan State University and Jamie Dillard (right) of Georgia State University presented work conducted at Georgia State University’s PREPP Lab.

GSSI Pre-Conference

The Physiology of Hydration: More Than Water Alone

This session explores the physiology of hydration through an integrated lens—examining how carbohydrate, sodium, flavor, and fluid interact to influence intake, absorption, retention, and performance. We’ll review current research on fluid balance, osmotic drivers, and palatability, highlighting mechanisms that underpin voluntary intake and thermoregulation. Attendees will gain insight into individualized strategies, including sweat profiling and timing approaches, to optimize euhydration and mitigate performance decrements associated with >2% body-mass loss. Practical applications will be linked to laboratory- and field-based research, ensuring translation from bench to field. This pre-conference equips you with evidence-based tools to support athlete hydration across diverse environments and sporting contexts. 

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  • Session 1: Sweating the detail: New insights on hydration considerations for athlete performance
    • Lewis James, PhD, Associate Professor in Human Nutrition in the School of Sport, Exercise and Health Sciences at Loughborough University
  • Session 2: Functional ingredients in fluid replacement beverages for athletes
    • Lindsay Baker, PhD, Director at the Gatorade Sports Science Institute
  • Session 3: The hydration toolkit: Practical approaches to athlete support
    • Floris Wardenaar, PhD, Associate Professor at the College of Health Solutions at Arizona State University