Short sprint intervals reduce panic disorder symptoms more than relaxation training. Digest
People with panic disorder often avoid physical exertion because its bodily effects resemble the onset of an attack. Scientists examined whether repeated, carefully monitored sprint bursts could harness those feared sensations therapeutically.
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Researchers in Brazil enrolled sedentary adults diagnosed with panic disorder, a condition marked by sudden episodes of intense fear accompanied by physical symptoms such as palpitations and shortness of breath. Participants were randomly assigned to one of two 12-week programs: brief intermittent intense exercise, which combined walking with repeated 30-second high-intensity sprints, or progressive muscle relaxation, a standard relaxation technique that teaches people to tense and release different muscle groups. A psychiatrist who did not know which treatment each person received evaluated symptoms at the beginning of the study, during treatment, and again three months after the program ended.
- Panic severity dropped in both groups over time, but scores were lower in the sprint group than in the relaxation group at the end of treatment and remained lower at the end of the study.
- The number of panic attacks decreased during treatment in both groups, then rose somewhat after treatment ended. This rebound was more pronounced in the relaxation group.
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Both groups had less general anxiety over time, and the exercise group tended to show a more favorable pattern of improvement across the study period.
- Depressive symptoms improved in both groups, but at the end of the study, scores were lower in the sprint group.
The authors interpret these results through the lens of interoceptive exposure, a core component of cognitive behavioral therapy that deliberately brings on feared bodily sensations so patients can learn they are not harmful. During intense exercise, people experience many of the same internal cues that trigger panic, such as rapid breathing and a pounding heart. Repeated exposure to these sensations in a safe, supervised setting may weaken catastrophic beliefs about them and build tolerance. The researchers also suggest that biochemical changes during exercise, including shifts in blood acidity, might blunt the panic-provoking effects of hyperventilation (rapid breathing).
The study focused on sedentary adults, so it is not clear whether the results also apply to more physically active patients. Still, these findings suggest that sprint training could offer a simple, low-cost way to help people with panic disorder outside traditional therapy sessions. In this clip, I present the compelling science that suggests exercise is a powerful tool for preventing or managing the symptoms of depression and mental illness.