The Effect of Sodium Bicarbonate Intake on Maximum Muscle Strength during High-Intensity Exercise of a Sprinter
Background: This study investigated the effect of sodium bicarbonate (HCO3-) intake on maximum muscle strength variables during eight weeks of high-intensity exercise of a sprinter.
Methods: The study was conducted on 30 elite sprint athletes in Seoul, Republic of Korea as in 2016 with ≥3 yr of an athletic career by assigning 10 each to three groups (the control, training, and sodium bicarbonate-training combination groups [HCO3- and training group]). The training group and the HCO3- and training group participated in a high-intensity exercise program for 90 min per session, five days a week for eight weeks in total, and it involved 80%-90% heart rate max intensity increase every 2-3 weeks, and allocation of internal exercise, aquatic exercise, and hill exercise. HCO3- was provided to the HCO3- and training group, and involved an intake of 300 g of HCO3- per 1 kg body weight, once a day, 90 min prior to the high-intensity exercise program for eight weeks.
Results: HCO3- intake during high-intensity training had a positive effect on maximum muscle strength. A positive effect was observed in the HCO3- and training groups; however, the effect on maximum muscle strength was stronger in the HCO3- and training groups. In particular, the effect on maximum muscle strength was observed during extension than during flexing starting from the fourth week of the exercise program with HCO3- intake.
Conclusion: HCO3- intake during 8 weeks of high-intensity training began to have a positive effect on maximum muscle strength. Therefore, HCO3- intake during high-intensity exercise is effective in improving exercise capacity.
2. Willmore JH, Costill DL (2000). Physiology of Sport and Exercise. Champaign, IL: Human Kinetics, United States.
3. Rawson E, Branch D, Stephenson T (2020). Williams' Nutrition for Health, Fitness and Sport (12th Edition). New York, McGraw-Hill Education, United States.
4. Van Montfoort MC, Van Dieren L, Hopkins WG, Shearman JP (2004). Effects of ingestion of bicarbonate, citrate, lactate, and chloride on sprint running. Med Sci Sports Exerc, 36(7):1239-1243.
5. Price M, Moss P, Rance S (2003). Effects of sodium bicarbonate ingestion on prolonged intermittent exercise. Med Sci Sports Exerc, 35(8):1303-1308.
6. Price MJ, Cripps D (2012). The effects of combined glucose-electrolyte and sodium bicarbonate ingestion on prolonged intermittent exercise performance. J Sports Sci, 30(10):975-983.
7. Heyward VH, Gibson A (2014). Advanced fitness assessment and exercise prescription (7th edition). Champaign, IL: Human Kinetics, United States.
8. Linderman J, Fahey TD (1991). Sodium bicarbonate ingestion and exercise performance: an update. Sports Med, 11(2):71-77.
9. Pincivero DM, Lephart SM, Karunakara RG (1997). Effects of rest interval on isokinetic strength and functional performance after short-term high intensity training. Br J Sports Med, 31(3):229-234.
10. Fry AC, Kraemer WJ (1997). Resistance exercise overtraining and overreaching. Neuroendocrine responses. Sports Med, 23(2):106-129.
11. Kellis E, Baltzopoulos V (1995). Isokinetic eccentric exercise. Sports Med, 19(3):202-222.
12. Isner-Horobeti ME, Dufour SP, Vautravers P, et al (2013). Eccentric exercise training: modalities, applications and perspectives. Sports Med, 43(6):483-512.
13. Kellis E, Baltzopoulos V (1998). Muscle activation differences between eccentric and concentric isokinetic exercise. Med Sci Sports Exerc, 30(11):1616-1623.
14. Douglas J, Pearson S, Ross A, et al (2017). Eccentric Exercise: Physiological Characteristics and Acute Responses. Sports Med, 47(4):663-675.
15. Costill DL, Verstappen F, Kuipers H, et al (1984). Acid-base balance during repeated bouts of exercise: influence of HCO3. Int J Sports Med, 5(5):228-231.
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