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Neurophysiological Stress Response and Mood Changes Induced by High-Intensity Interval Training: A Pilot Study
Inmaculada C Martínez-Díaz1, Luis Carrasco1
1Department of Physical Education and Sport, University of Seville, E-41013 Seville, Spain.
Summary
High-intensity interval training (HIIT) is feasible and can acutely impact mood states. This pilot study found HIIT increased stress hormones and temporarily lowered mood, with mood improving 30 minutes post-exercise.
Area of Science:
- Exercise Physiology
- Neuroendocrinology
- Sports Psychology
Background:
- The relationship between intense exercise, neurophysiological stress responses, and mood states is complex.
- High-intensity interval training (HIIT) presents a potential method to explore these interactions.
Purpose of the Study:
- To assess the feasibility of a HIIT intervention in inducing neurophysiological stress.
- To investigate the association between HIIT-induced stress responses and mood changes.
- To inform the design of future definitive randomized controlled trials.
Main Methods:
- Pilot study involving 25 active male college students.
- HIIT intervention: 10 x 1-minute cycling bursts at VO2peak power output.
- Assessments included plasma corticotropin and cortisol levels, and the Profile of Mood States (POMS) questionnaire.
Main Results:
- Significant increases in plasma corticotropin and cortisol levels post-HIIT.
- Temporary decrease in mood states immediately post-HIIT.
- Mood states significantly improved 30 minutes after the exercise bout.
- Observed significant correlations between stress hormone levels and mood state changes.
Conclusions:
- HIIT intervention was feasible and acceptable for participants.
- A single bout of HIIT acutely alters mood states, linked to Hypothalamic-Pituitary-Adrenal axis activation.
- Findings support further investigation into HIIT's effects on mood and stress physiology.
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