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Effect of Hot Spring Therapy on Central Fatigue Elimination During Altitude Training

RecruitingNAAges 12 Years - 16 YearsAllMacao Polytechnic University
NCT07615478 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

This randomized controlled trial investigates the effects of hot spring balneotherapy on central fatigue elimination in adolescent rowers undergoing altitude training at approximately 1600 meters (Tengchong, Yunnan). Thirty adolescent athletes (aged 12-16 years) will be stratified by sex and randomly allocated to three groups: Group A (natural recovery, no immersion), Group B (38°C pure water immersion), and Group C (38°C sodium bicarbonate hot spring immersion). Interventions will be administered 3 times per week for 4 weeks. The primary outcomes are central fatigue indices including voluntary activation (VA) and central activation ratio (CAR). Secondary outcomes encompass cognitive function (Stroop test, Psychomotor Vigilance Test), cerebral hemodynamics (functional near-infrared spectroscopy, transcranial Doppler ultrasound), exercise performance (maximal oxygen uptake, 1000m test, 50

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📋 Eligibility rules (as published)
Inclusion Criteria: * Male or female aged 12-16 years- Healthy with no serious chronic diseases or skin conditions * At least 1 year of systematic rowing training experience * Currently undergoing centralized altitude training at approximately 1600 meters- No history of systematic hot spring or spa immersion within the past month * No allergy history to sodium bicarbonate or hot spring minerals- Ability to provide written informed assent (participant) and written informed consent (parent/guardian)- No acute infection, fracture, or surgery within the past month * Not currently taking non-steroidal anti-inflammatory drugs (NSAIDs), immunosuppressants, or medications affecting autonomic or cognitive function Exclusion Criteria: * History of cardiovascular, respiratory, renal, endocrine, or neurological disorders- Uncontrolled hypertension or hypotension * History of syncope, heat intolerance, or severe dizziness during hot water immersion- Open wounds, severe eczema, or other skin conditions contraindicating water immersion * Current use of beta-blockers, anticholinergics, stimulants, sedatives, or other medications affecting central nervous system function * Color blindness or uncorrected visual impairment affecting Stroop test performance- Pregnancy (for female participants)- Alcohol consumption or smoking * Shift work or trans-meridian travel within 2 weeks prior to baseline assessment * Any condition deemed by the investigator as unsafe for participation
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What it tests

  • Natural recovery
  • Hot water immersion
  • Hot spring balneotherapy
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Where

1 site
Macao Polytechnic University
Macao, China
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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