Effects of breathing on brain, body and their coupling in elite adolescent ice hockey players

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN14521276

Enrollment

Registered

2026-06-24

Start date

2026-05-05

Completion date

Unknown

Last updated

2026-07-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Effects of deep breathing on brain activity, autonomic nervous system function, affective wellbeing, and brain–body coupling in healthy adolescents. Other

Interventions

Methodically this study will use EEG-measurements for brain signal oscillations (frontal, central, parietal, occipital), ECG for measuring cardiac signal, heart rate variability (HRV) and breathing wi

Eligibility

Sex/Gender

All

Age

15 Years to 20 Years

Inclusion criteria

Inclusion criteria: 1. Healthy volunteer 2. Male or female 3. Adolescent 15-20 years old 4. Elite ice hockey players (highest or second highest junior league in Finland)

Exclusion criteria

Exclusion criteria: 1. Chronical arrhythmia or user of medicines that will affect on heart rate (diabetes care containing insulin, thyroxine, psychotropic drugs, tricyclic antidepressants, clozapine) 2. Participants will be informed to reduce caffeine and nicotine intake 3h, intensive sports 12h and alcohol 24h before measurement 3. Participants which don’t understand clearly Finnish or English will be excluded from the study

Design outcomes

Primary

Measure	Time frame
EEG alpha power (8–12 Hz) and the strength of brain–autonomic coupling between alpha power and autonomic responses (respiratory rate and HRV) measured using EEG, ECG, respiration belt at natural and deep breathing conditions (480 seconds)	—

Secondary

Measure	Time frame
Cardiac variables (HR, RMSSD, HF, LF, SDNN) measured using ECG at natural and deep breathing conditions (480 seconds);Self-perceived mood, stress, attention, alertness, focus, interoception and personality trait measured using questionnaires (WARR scale 0-10, IPIP-20 scale 1-5, MAIA-2 scale 0-5, VAS scale 0-10) at before and/or after conditions;Beta activity (12-30 Hz) across all four brain regions (frontal, central, parietal, occipital) measured using EEG at natural and deep breathing conditions (480 seconds)	—

Measure

Time frame

Cardiac variables (HR, RMSSD, HF, LF, SDNN) measured using ECG at natural and deep breathing conditions (480 seconds);Self-perceived mood, stress, attention, alertness, focus, interoception and personality trait measured using questionnaires (WARR scale 0-10, IPIP-20 scale 1-5, MAIA-2 scale 0-5, VAS scale 0-10) at before and/or after conditions;Beta activity (12-30 Hz) across all four brain regions (frontal, central, parietal, occipital) measured using EEG at natural and deep breathing conditions (480 seconds)

—

Countries

Finland

Contacts

Public ContactJaakko Heikkilä

jaakko.heikkila@xamk.fi+358 504755926

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jul 23, 2026