Overview

The Health and Exercise Psychology Lab seeks to understand how psychological variables can impact health and exercise behaviour as well as how health and exercise behaviours can impact psychological variables.

Two women smiling during a break at the gym
  • Primary investigator

    Dr. Shaelyn Strachan

    Combining her own experiences with physical activity and her background in psychology, Dr. Strachan uses quantitative methods and social psychological theories to find answers to how we can help people stick with their healthy lifestyle choices.

  • Areas of focus

    • Self-compassion and health behaviours
    • Health identities, possible selves and other self-perceptions
    • Affect and self-regulation
    • The application of psychological theories to health behaviours
    • Physical activity counselling

Projects

Self-Compassion

Self-compassion involves offering oneself care and support during challenging times. Self-regulation describes the process of managing your health behaviours. Successful self-regulation involves actions like setting goals, monitoring goal progress, and adjusting behaviours when insufficient progress has been made. 

The lab is examining self-compassion in relation to the self-regulation of health behaviours with a primary focus on physical activity. Whether self-compassion helps people self-regulate their health behaviours and enhances their well-being, including looking at people with or at risk for chronic disease, everyday exercisers, parents of young children, and athletes.

Exercise Identity

When a person identifies with exercise, they see exercise as self-descriptive. Drawing from identity theory, the lab explores relationships between exercise identity and exercise behaviour, as well as behaviours that help people self-regulate their exercise. 

Some current identity research topics being conducted relate to building or strengthening exercise identities, examining whether exercise identities can fluctuate in different social situations and whether self-compassion helps us understand when and how people respond to identity-challenging situations.

Communication

Research in how people can best communicate about their health behaviours draws from Dr. Strachan's personal experience teaching motivational interviewing and physical activity counselling. The lab explores ways to improve empathic accuracy when health professionals talk with patients about physical activity. 

The lab is currently working with a parterns with expertise in patient engagement research (where patients or community members are included as partners on the research team) to determine how motivational interviewing techniques can be used to improve communication between patient/community partners and researchers.

Publications

2025

Rhodes, R.E., Rebar, A.L., & Strachan, S. (accepted). Physical activity identity as an axis of dual process motivation and self-regulation processes: current evidence and future research directions. Psychology of Sport and Exercise: 25th anniversary edition.

Strachan, S.M., Kullman, S., Dobrowolskyi, M., & Vega, V, Yarema, A., & Patson, C (2025). Explaining the self-regulatory role of affect in identity theory: The role of self-compassion. British Journal of Health Psychology, 30,(1).