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Evidence: Moderate

Breath-based regulation

Consciously slowed breathing with prolonged exhalation (approx. 4–6 breaths per minute). Longer exhalation increases parasympathetic influence on heart rate.

Intended for

Reducing short-term excessive physical activation: racing heart, shallow breathing, trembling before or after exertion.

Who does the evidence apply to?

Predominantly healthy adults, increasingly also adolescents and athletes; few studies specifically with 13–18 year olds in competition.

Boundaries

Changes acute arousal levels, not the cause of persistent anxiety or overload. Effect sizes vary depending on protocol and measurement method.

In athlete speak

A long exhale is a switch your body understands. It doesn't drain your energy – it pulls you out of the red zone and back into your working sweet spot.

Accessible doesn't mean inaccurate: We simplify the language, not the message.

For Parents

What we know

Slow breathing with prolonged exhalation measurably lowers heart rate and subjective tension.

What we don't know

How big the effect is on teenagers in a real match and how long it lasts.

What that means in practice

Useful as a first-aid tool, not as a substitute for therapy. Works better if practised in training.

Sources

  • Zaccaro, A., Piarulli, A., Laurino, M., et al. (2018). How Breath-Control Can Change Your Life: A Systematic Review on Psycho-Physiological Correlates of Slow Breathing. Frontiers in Human Neuroscience.Systematic ReviewPopulation: Predominantly healthy adultsDOI 10.3389/fnhum.2018.00353
  • Lehrer, P., Kaur, K., Sharma, A., et al. (2020). Heart Rate Variability Biofeedback Improves Emotional and Physical Health and Performance: A Systematic Review and Meta Analysis. Applied Psychophysiology and Biofeedback.Systematic ReviewPopulation: Clinical and athletic samples, mostly adultsDOI 10.1007/s10484-020-09466-z

Content on this method

These contents are knowledge and training offerings from sport psychology. They do not replace psychotherapy, medical treatment, or professional sport psychological support.