Sodium bicarbonate ingestion and its effects on anaerobic exercise of various durations
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CONTRIBUTORS:
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JOURNAL:
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YEAR:
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1992
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PUB TYPE:
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Journal Article
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SUBJECT(S):
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ANAEROBIC-CAPACITY; BICYCLE-ERGOMETRY; SODIUM-BICARBONATE; LACTATE
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DISCIPLINE:
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No discipline assigned
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HTTP:
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LANGUAGE:
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English
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PUB ID:
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103-366-335
(Last edited on
2002/02/27 18:45:01 US/Mountain)
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SPONSOR(S):
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ABSTRACT:
Four groups of male subjects participated in anaerobic testing on a Repco EX10 cycle ergometer to determine the effectiveness of sodium bicarbonate (0.3 g kg-1 body mass) as an ergogenic aid during exercise of 10, 30, 120 and 240 s duration. Blood was collected 90 min prior to ingestion of sodium bicarbonate (NaHCO3) after ingestion of NaHCO3 and immediately post-exercise from a heated (43-46 degrees C) fingertip and analysed immediately post-collection for pH, base excess, bicarbonate and lactate. The total work undertaken (kJ) and peak power achieved during the tests were also obtained via Repco Work Monitor Unit. Blood bicarbonate levels were again increased above the control and placebo conditions and blood lactate levels were also increased following the bicarbonate trials. The pH levels fell significantly below the control and placebo conditions in all trials. The results indicate that NaHCO3 at this dosage has no ergogenic benefit for work of either 10 or 30 s duration, even though blood bicarbonate levels were significantly increased following ingestion of NaHCO3. For work periods of 120 and 240 s, performance was significantly increased above the control and placebo conditions following NaHCO3 ingestion.
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