Short-term co-ingestion of creatine and sodium bicarbonate improves anaerobic performance in trained taekwondo athletes.

Autor: Sarshin A; Faculty of Physical Education and Sport Sciences, Department of Exercise Physiology, Karaj Branch, Islamic Azad University, Karaj, Iran. amsarshin@gmail.com., Fallahi V; Faculty of Physical Education and Sport Sciences, Department of Exercise Physiology, Karaj Branch, Islamic Azad University, Karaj, Iran., Forbes SC; Faculty of Education, Department of Physical Education, Brandon University, Brandon, MB, R7A6A9, Canada., Rahimi A; Faculty of Physical Education and Sport Sciences, Department of Exercise Physiology, Karaj Branch, Islamic Azad University, Karaj, Iran., Koozehchian MS; Department of Kinesiology, Jacksonville State University, Jacksonville, AL, 36265, USA., Candow DG; Faculty of Kinesiology and Health Studies, University of Regina, Regina, SK, S4S0A2, Canada., Kaviani M; School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada., Khalifeh SN; Faculty of Physical Education and Sport Sciences, Department of Exercise Physiology, Karaj Branch, Islamic Azad University, Karaj, Iran., Abdollahi V; Taekwondo National team, Taekwondo federation, Tehran, Iran., Naderi A; Department of Sport Physiology, Boroujerd Branch, Islamic Azad University, Boroujerd, Iran.
Jazyk: angličtina
Zdroj: Journal of the International Society of Sports Nutrition [J Int Soc Sports Nutr] 2021 Jan 21; Vol. 18 (1), pp. 10. Date of Electronic Publication: 2021 Jan 21.
DOI: 10.1186/s12970-021-00407-7
Abstrakt: Background: Creatine (CR) and sodium bicarbonate (SB) alone improve anaerobic performance. However, the ergogenic effects of CR and SB co-ingestion on taekwondo anaerobic performance remains unknown.
Methods: Forty trained taekwondo athletes (21 ± 1 y.; 180.5 ± 7.3 cm; 72.7 ± 8.6 kg) were randomized to: (i) CR and SB (CR + SB; 20 g of CR+ 0.5 g·kg - 1 ·d - 1 of SB), (ii) CR, (iii) SB, (iv) placebo (PLA), or (v) control (CON) for 5 days. Before and after supplementation, participants completed 3 bouts of a Taekwondo Anaerobic Intermittent Kick Test (TAIKT) to determine changes in peak power (PP), mean power (MP), and fatigue index (FI). Blood lactate (BL) was measured before, immediately following, and 3 min post-TAIKT.
Results: PP and MP increased over time (P < 0.05) following CR + SB, CR, and SB ingestion, with no changes in the PLA or CON groups. There was a greater increase over time in MP following CR + SB (Absolute Δ: 1.15 ± 0.28 W∙kg 67 ) compared to CR (Absolute Δ: 0.43 ± 0.33 W∙kg 67 ; P < 0.001) and SB (Absolute Δ: 0.73 ± 0.24 W∙kg 67 ; P = 0.03). There were no significant time and condition effect for FI (P > 0.05). BL increased following exercise across all groups; however, CR + SB and SB post-exercise BL was lower compared to CR, PLA, and CON (P < 0.05).
Conclusion: Short-term CR and SB alone enhance TAIKT performance in trained taekwondo athletes. Co-ingestion of CR and SB augments MP compared to CR and SB alone, with similar PP improvements.
Databáze: MEDLINE
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