Skip Navigation LinksHome > January 2010 - Volume 24 - Issue 1 > Sodium Bicarbonate Ingestion and Boxing Performance
Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e3181a392b2
Original Research

Sodium Bicarbonate Ingestion and Boxing Performance

Siegler, Jason C; Hirscher, Kristian

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Abstract

Siegler, JC and Hirscher, K. Sodium bicarbonate ingestion and boxing performance. J Strength Cond Res 24(1): 103-108, 2010-Boxing is a sport that consists of multiple high-intensity bouts separated by minimal recovery time and may benefit from a pre-exercise alkalotic state. The purpose of this study was to observe the ergogenic potential of sodium bicarbonate (NaHCO3) ingestion on boxing performance. Ten amateur boxers volunteered to participate in 2 competitive sparring bouts. The boxers were prematched for weight and boxing ability and consumed either 0.3 g·kg−1 body weight (BW) of NaHCO3 (BICARB) or 0.045 g·kg−1 BW of NaCl placebo (PLAC) mixed in diluted low calorie-flavored cordial. The sparring bouts consisted of four 3-minute rounds, each separated by 1-minute seated recovery. Blood acid-base (pH, bicarbonate [HCO3], base excess [BE]), and performance (rates of perceived exertion [RPE], heart rate [HR] [HRave and HRmax], total punches landed successfully) profiles were analyzed before (where applicable) and after sparring. The results indicated a significant interaction effect for HCO3 (p ≤ 0.001) and BE (p < 0.001), but not for pH (p = 0.48). Post hoc analysis revealed higher presparring HCO3 and BE for the BICARB condition, but no differences between the BICARB and PLAC conditions postsparring. There was a significant increase in punches landed during the BICARB condition (p < 0.001); however, no significant interaction effects for HRave (p = 0.15), HRmax (p = 0.32), or RPE (p = 0.38). The metabolic alkalosis induced by the NaHCO3 loading elevated before and after sparring blood buffering capacity. In practical application, the findings suggest that a standard NaHCO3 loading dose (0.3 g·kg−1) improves punch efficacy during 4 rounds of sparring performance.

© 2010 National Strength and Conditioning Association

 

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