Effects of Sodium Bicarbonate Ingestion on Prolonged Endurance Running Performance and Recovery in Trained Runners

Lew, Shawn Ka Shing (2017) Effects of Sodium Bicarbonate Ingestion on Prolonged Endurance Running Performance and Recovery in Trained Runners. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

The purpose of this study was to examine the effect of sodium bicarbonate (NaHCO3) (0.3g.kg-1BW) on 60 min endurance treadmill running performance and recovery of trained runners. A total of 10 trained runners (age: 20.7 ± 1.06 years; weight: 61.35 ± 6.21 kg; height: 166.10 ± 3.73 cm; VO2max 58.43 ± 5.62 ml.kg.min-1) from Tunku Abdul Rahman University College were recruited in this study. They undertook 2 experimental trials which included 1 NaHCO3 (0.3g.kg-1BW) trial and 1 PLA trial (0.045g.kg-1BW of NaCl) 60 min prior to the 60 min endurance treadmill running (30 min preloading run followed by 30 min maximum distance run). Each test was separated at least 7 days apart. Results showed that the distance covered in 60 min endurance treadmill running for the NaHCO3 trial was further than the PLA trial (5233.60 ± 524.72 m vs. 5021.40 ± 440.18 m; p= 0.012) associated with greater blood lactate level and heart rate measures (5.66 ± 1.09 mmol.L-1 vs. 3.68 ± 0.71 mmol.L-1; 172 ± 17.37 beats.min-1 vs. 175 ± 19 beats.min-1 ). At post recovery, a greater decrement in blood lactate level from 5.66 ± 1.08 mmol.L-1 to 2.53 ± 0.91 mmol.L-1 (~55%; p<0.01) in NaHCO3 trial as compared to placebo trial (from 3.68 mmol.L-1 to 2.17 ± 0.50 mmol.L-1; ~41%; p<0.01). In conclusion, the present study demonstrates the ingestion of NaHCO3 (0.3g.kg-1BW) 60 min prior to the testing improved 60 min endurance treadmill running and enhanced the recovery rate after exercise.