Acute versus chronic sodium bicarbonate ingestion and anaerobic work and power output

L Mc Naughton, D Thompson

Research output: Contribution to journalArticlepeer-review

58 Citations (SciVal)

Abstract

Background. The aim of this study was to compare and contrast the effects of acute versus chronic sodium bicarbonate ingestion. Methods. Participants: eight male, (mean +/- SE): age, 20.8 +/-0.4 yrs; height, 179.6 +/-0.6 cm; body mass, 79.4 +/-0.85 kg, Sigma 7skf, 48.6 +/-4.8 mm, (V) over dot O-2max=55.9 +/-0.8 ml.kg(-l).min(-l)) volunteer subjects, ingested NaHCO3 in either a dose of 0.5 g.kg(-1) body mass acutely or the same dose daily over a period of six days in order to determine whether there were any differences in performance of 90 sec maximal cycling ergometry. Intervention: after subjects undertook an initial control (C) test session, all were then randomly assigned to one of two groups, acute or chronic NaHCO3 ingestion. Subjects in the acute ingestion (AI) group completed their supplemented test on day one, and then on the following day. Chronic ingestion (CI) subjects completed the test after one day of chronic ingestion as well as following six days of bicarbonate ingestion. Following ten days rest, subjects repeated the protocol in the opposite group. Measures: blood samples were taken pre- and postingestion, daily. and pre- and postexercise and were analysed for, pH, Base excess (BE), HCO3-, PO2, PCO2, Na+, K+, Cl-, and lactate. Results. Both the chronic (CI) and acute ingestion (Al) groups were significantly different to the control (C) value (p
Original languageEnglish
Pages (from-to)456-462
Number of pages7
JournalJournal of Sports Medicine and Physical Fitness
Volume41
Issue number4
Publication statusPublished - 2001

Fingerprint

Dive into the research topics of 'Acute versus chronic sodium bicarbonate ingestion and anaerobic work and power output'. Together they form a unique fingerprint.

Cite this