Abstract
Burnout is a growing problem in high-performance sport and has negative
consequences for athletes (e.g., mental ill-health). It is therefore important
to effectively monitor athlete burnout to aid intervention efforts. While
self-report measures are available (e.g., athlete burnout questionnaire), the
limitations associated with these measures (e.g., social desirability bias)
means that objective physiological markers may also be useful. Thus, this
article critically discusses potential biomarkers of athlete burnout, drawing on
research inside and outside of sport to offer an overview of the current
state-of-the-art in this research area. First, it outlines what athlete burnout
is, its deleterious consequences, and discusses existing psychological
assessments. The article then critically discusses literature on
hypothalamic-pituitary-adrenal axis (e.g., salivary cortisol) and autonomic
nervous system (e.g., heart rate variability) indices of burnout, highlighting
some promising biomarkers for future research (e.g., salivary cortisol at
bedtime, vagally-mediated heart rate variability at rest). Finally, the article
concludes by highlighting key considerations and offering recommendations for
future research (e.g., use of more homogenous methods in assessing burnout and
physiological parameters). As a result, the intention of this article is to
spark more higher quality research on the psychophysiology of athlete burnout,
thereby helping tackle this prominent issue in high-performance sport.
Keywords
Biomarkers - Exhaustion - Mental Health - Sport Devaluation - Well-Being