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Journals / Turkish Journal of Kinesiology / 2026 / Volume: 12 Issue: 2

Effects of sodium bicarbonate on aerobic endurance: An acute intervention study in boxers

Halil Uçar(Faculty of Sports Sciences, Inönü University, Malatya, Türkiye)0000-0002-4231-1267
Murat Ozan(Faculty of Sports Sciences, Atatürk University, Erzurum, Türkiye.)0000-0003-3818-4637
Pages
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Publication Date
2026-05-01
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results demonstrated that CMJ performance was significantly higher in the NaHCO₃ condition compared with placebo (p < 0.05; d = 0.50).

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study investigated the effects of acute NaHCO₃ ingestion on aerobic endurance and anaerobic power performance in elite boxers.
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Key Findings & Data:A double-blind, placebo-controlled, crossover experimental design was employed, and 25 male boxers completed both the NaHCO₃ (0.3 g/kg) and placebo conditions.
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Conclusion & Impact:The results demonstrated that CMJ performance was significantly higher in the NaHCO₃ condition compared with placebo (p < 0.05; d = 0.50).
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Boxing · buffering capacity · countermovement jump

Abstract

This study investigated the effects of acute NaHCO₃ ingestion on aerobic endurance and anaerobic power performance in elite boxers. A double-blind, placebo-controlled, crossover experimental design was employed, and 25 male boxers completed both the NaHCO₃ (0.3 g/kg) and placebo conditions. Ninety minutes after ingestion, participants performed the countermovement jump (CMJ) test, followed by the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1). Upon completion of the Yo-Yo IR1 test, participants’ perceived exertion levels were assessed using the Borg Category-Ratio 10 Rating of Perceived Exertion (RPE) scale. The results demonstrated that CMJ performance was significantly higher in the NaHCO₃ condition compared with placebo (p < 0.05; d = 0.50). Similarly, the distance covered during the Yo-Yo IR1 test increased significantly following NaHCO₃ ingestion (p < 0.05; d = 0.67), indicating an improvement in high-intensity intermittent exercise capacity. No significant differences in RPE values were observed between conditions. In conclusion, acute NaHCO₃ ingestion effectively enhances both anaerobic jump performance and intermittent aerobic endurance in boxers. These findings suggest that NaHCO₃ may serve as a beneficial nutritional ergogenic strategy when administered prior to competition or high-intensity training sessions.

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Cite This Article

Uçar, H., Ozan, M. (2026). Effects of sodium bicarbonate on aerobic endurance: An acute intervention study in boxers. Turkish Journal of Kinesiology, Volume: 12 Issue: 2. https://doi.org/10.31459/turkjkin.1858622

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