RecruitingNot Applicable

Effects of Single Sodium Bicarbonate Supplementation on National-Level Finswimming Performance

Czechia20 participantsStarted 2025-07-01

Plain-language summary

This randomized, double-blind, placebo-controlled crossover trial will investigate the acute effects of sodium bicarbonate supplementation on performance, stroke biomechanics, and selected physiological and perceptual responses during a simulated 200-meter Bi-Fins race in elite finswimmers.

Who can participate

Age range15 Years – 30 Years

SexALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion criteria

✓. Member of a wider national selection in finswimming (junior or senior level)
✓. Regular participation in competitive finswimming training (≥4 sessions per week)
✓. Age between 15 and 30 years
✓. Absence of chronic illness or injury
✓. No use of medications or dietary supplements during the study period
✓. Signed informed consent (for minors, also signed by a legal guardian)

Exclusion criteria

✕. History of gastrointestinal disorders affecting supplement tolerance
✕. Presence of cardiovascular, metabolic, or musculoskeletal disorders
✕. Current illness or acute infection
✕. Regular use of substances that may interfere with acid-base balance
✕. Refusal to comply with pre-test restrictions (e.g., 48 hours without training)

What they're measuring

Stroke rate (SR; cycles/min)

Timeframe: Measured from video analysis of the 200-m Bi-Fins trial; final values reported at race completion on Day 1, Day 3, and Day 5.

Total race time (seconds)

Timeframe: Measured from video analysis of the 200-m Bi-Fins trial; final values reported at race completion on Day 1, Day 3, and Day 5.

Stroke length (SL; meters/cycle)

Timeframe: Measured from video analysis of the 200-m Bi-Fins trial; final values reported at race completion on Day 1, Day 3, and Day 5.

Trial details

NCT IDNCT07135934

SponsorPalacky University

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2025-08-17

Contact for this trial

Tomáš Michalica, Mgr.

+420605320688 tomas.michalica01@upol.cz

View on ClinicalTrials.gov More Sport Performance trials

Who can participate

Age range15 Years – 30 Years

SexALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion criteria

✓. Member of a wider national selection in finswimming (junior or senior level)
✓. Regular participation in competitive finswimming training (≥4 sessions per week)
✓. Age between 15 and 30 years
✓. Absence of chronic illness or injury
✓. No use of medications or dietary supplements during the study period
✓. Signed informed consent (for minors, also signed by a legal guardian)

Exclusion criteria

✕. History of gastrointestinal disorders affecting supplement tolerance
✕. Presence of cardiovascular, metabolic, or musculoskeletal disorders
✕. Current illness or acute infection
✕. Regular use of substances that may interfere with acid-base balance
✕. Refusal to comply with pre-test restrictions (e.g., 48 hours without training)

What they're measuring

Stroke rate (SR; cycles/min)

Timeframe: Measured from video analysis of the 200-m Bi-Fins trial; final values reported at race completion on Day 1, Day 3, and Day 5.

Total race time (seconds)

Timeframe: Measured from video analysis of the 200-m Bi-Fins trial; final values reported at race completion on Day 1, Day 3, and Day 5.

Stroke length (SL; meters/cycle)

Timeframe: Measured from video analysis of the 200-m Bi-Fins trial; final values reported at race completion on Day 1, Day 3, and Day 5.