Effect of Hydrogen-rich Water During Tapering on Recovery After Functional Overreaching in Basketball Players
Effect of Hydrogen-rich Water Supplementation During Tapering on Recovery After Functional Overreaching in Competitive Male Basketball Players: A Randomized, Double-blind, Placebo-controlled Paralel-group Trial
The goal of this clinical trial is to evaluate whether hydrogen-rich water supplementation during tapering improves recovery after functional overreaching in competitive male basketball players aged 18-35 years. The main questions it aims to answer are:
- Does hydrogen-rich water improve autonomic recovery after functional overreaching?
- Does hydrogen-rich water improve recovery in biochemical, performance, and subjective feeling outcomes during tapering?
Researchers will compare hydrogen-rich water to placebo (water containing no molecular hydrogen) to determine whether molecular hydrogen improves recovery after accumulated fatigue has been induced by functional overreaching. Participants will:
- Complete a training cycle including normal training, functional overreaching, and tapering.
- Consume hydrogen-rich or placebo water daily during the one-week tapering period.
- Undergo repeated testing of autonomic nervous system, blood biochemical markers, performance, and subjective soreness.
Przegląd badań
Status
Status
Warunki
Warunki
Interwencja / Leczenie
Interwencja / Leczenie
Szczegółowy opis
The study consists of an initial screening and entry testing phase, followed by one week of normal training, two weeks of functional overreaching, and one week of tapering. During the functional overreaching period, training load is increased to approximately 120-130% of normal training load to induce accumulated fatigue. During the tapering period, training volume is reduced to approximately 50-60% of normal training volume to support recovery and performance rebound.
The molecular hydrogen is administered only during the tapering period. Participants in the experimental group consume 2.5 L per day of hydrogen-rich water. The total daily dose is divided into 0.5 L in the morning, 1.5 L around training, and 0.5 L in the evening. Participants in the placebo group consume visually matched placebo water according to the same total daily intake and timing schedule. Supplementation adherence is monitored using logs, dose counts, and attendance records. Participants are randomly assigned in a 1:1 ratio to either the experimental group or the placebo group. Randomization is performed using a block scheme and a computer random number generator.
Testing is performed at multiple time points: entry laboratory testing, baseline after normal training, post-functional overreaching, and post-taper. The primary interval for evaluation is the change from post-functional overreaching to post-taper. Statistical analysis is based on a t-test or analysis of variance. Data that not follow a normal distribution are treated using a logarithmic transformation or analyzed using nonparametric tests. The significance level is set at 0.05.
Typ studiów
Typ studiów
Zapisy (Szacowany)
Zapisy
Faza
Faza
- Nie dotyczy
Kontakty i lokalizacje
Kontakt w sprawie studiów
Kontakt w sprawie studiów
- Nazwa: Jakub Krejci, PhD
- E-mail: jakub.krejci@upol.cz
Kopia zapasowa kontaktu do badania
- Nazwa: Jan Kvas
- Numer telefonu: +420774678756
- E-mail: jan.kvas01@upol.cz
Lokalizacje studiów
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Olomouc, Czechy, 77111
- Rekrutacyjny
- Palacky University, Faculty of Physical Culture
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Kontakt:
- Jan Kvas
- Numer telefonu: +420774678756
- E-mail: jan.kvas01@upol.cz
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Kryteria uczestnictwa
Kryteria kwalifikacji
Kryteria kwalifikacji
Wiek uprawniający do nauki
- Dorosły
Akceptuje zdrowych ochotników
Opis
Inclusion Criteria:
- Competitive male basketball players.
- Signed informed consent.
- Completion of entry medical and laboratory screening.
Exclusion Criteria:
- Acute injury or infection.
- History or presence of relevant cardiovascular, respiratory, metabolic, or other disease that may affect the study results.
- Use of medication affecting recovery markers or study results.
Plan studiów
Jak projektuje się badanie?
Szczegóły projektu
- Główny cel: Podstawowa nauka
- Przydział: Randomizowane
- Model interwencyjny: Przydział równoległy
- Maskowanie: Podwójnie
Liczba ramion
Broń i interwencje
Grupa uczestników / ArmGrupa uczestników / Arm |
Interwencja / LeczenieInterwencja / Leczenie |
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Eksperymentalny: Hydrogen-rich water
Hydrogen-rich water administered at a dose of 2.5 L per day during a one-week tapering period.
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Hydrogen-rich water with molecular hydrogen concentration >1.0 ppm.
Inne nazwy:
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Komparator placebo: Placebo water
Placebo water administered at a dose of 2.5 L per day during a one-week tapering period.
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Tap water without molecular hydrogen.
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Co mierzy badanie?
Podstawowe miary wyniku
Podstawowe miary wyniku
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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RMSSD
Ramy czasowe: One-week change between post-overreaching and post-taper.
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The root mean square of successive differences of RR intervals (RMSSD) is used as an index of parasympathetic activity and is calculated from an ECG using heart rate variability analysis.
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One-week change between post-overreaching and post-taper.
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Miary wyników drugorzędnych
Miary wyników drugorzędnych
Miara wyniku |
Opis środka |
Ramy czasowe |
|---|---|---|
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Creatine kinase
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Blood creatine kinase concentration is used as a marker of muscle damage.
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One-week change between post-overreaching and post-taper.
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High-sensitivity C-reactive protein
Ramy czasowe: One-week change between post-overreaching and post-taper.
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High-sensitivity C-reactive protein concentration is used as a marker of systemic inflammatory.
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One-week change between post-overreaching and post-taper.
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Cortisol
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Blood cortisol concentration is used as a marker of physiological stress response.
|
One-week change between post-overreaching and post-taper.
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Testosterone
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Blood testosterone concentration is used as a marker related to anabolic-catabolic balance.
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One-week change between post-overreaching and post-taper.
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Urea
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Blood urea concentration is used as a marker related to metabolic and protein-turnover stress.
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One-week change between post-overreaching and post-taper.
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Leukocytes
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Blood leukocyte count is used as a marker of immune-related response to training.
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One-week change between post-overreaching and post-taper.
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Lymphocytes
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Blood lymphocyte count is used as a marker of immune-related response to training.
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One-week change between post-overreaching and post-taper.
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Neutrophils
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Blood lymphocyte count is used as a marker of imflammatory response to training.
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One-week change between post-overreaching and post-taper.
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Reactive strength index
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Reactive strength index is used as an marker of neuromuscular function of the lower limbs and is measured using a drop jump.
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One-week change between post-overreaching and post-taper.
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Hangrip test
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Handgrip test is used as a marker of forearm muscle strength and is measured using a dynamometer.
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One-week change between post-overreaching and post-taper.
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20-m sprint
Ramy czasowe: One-week change between post-overreaching and post-taper.
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20-m sprint test is used to assess linear speed.
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One-week change between post-overreaching and post-taper.
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Repeated sprint
Ramy czasowe: One-week change between post-overreaching and post-taper.
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20 x 15 m repeated sprint test is used to asses repeated sprint ability.
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One-week change between post-overreaching and post-taper.
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Agility T-test
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Agility T-test is used to assess planned change-of-direction performance.
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One-week change between post-overreaching and post-taper.
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Basketball jump shot accuracy test
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Basketball jump shot accuracy test is used to assess basketball-specific performance.
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One-week change between post-overreaching and post-taper.
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Muscle soreness
Ramy czasowe: One-week change between post-overreaching and post-taper.
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Muscle soreness is assessed subjectively using a visual analog scale, which is represented by a 100 mm line marked 0 (no pain) and 100 (worst imaginable pain).
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One-week change between post-overreaching and post-taper.
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Współpracownicy i badacze
Sponsor
Sponsor
Śledczy
Śledczy
- Główny śledczy: Jan Kvas, Palacky University
Daty zapisu na studia
Główne daty studiów
Rozpoczęcie studiów (Rzeczywisty)
Rozpoczęcie studiów
Zakończenie podstawowe (Szacowany)
Zakończenie podstawowe
Ukończenie studiów (Szacowany)
Ukończenie studiów
Daty rejestracji na studia
Pierwszy przesłany
Pierwszy przesłany
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy przesłany, który spełnia kryteria kontroli jakości
Pierwszy wysłany (Rzeczywisty)
Pierwszy wysłany
Aktualizacje rekordów badań
Ostatnia wysłana aktualizacja (Rzeczywisty)
Ostatnia wysłana aktualizacja
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości
Ostatnia weryfikacja
Ostatnia weryfikacja
Więcej informacji
Terminy związane z tym badaniem
Inne numery identyfikacyjne badania
Inne numery identyfikacyjne badania
- FTK_2026_13
Plan dla danych uczestnika indywidualnego (IPD)
Planujesz udostępniać dane poszczególnych uczestników (IPD)?
Opis planu IPD
Ramy czasowe udostępniania IPD
Kryteria dostępu do udostępniania IPD
Informacje o lekach i urządzeniach, dokumenty badawcze
Bada produkt leczniczy regulowany przez amerykańską FDA
Bada produkt urządzenia regulowany przez amerykańską FDA
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