Tags

Type your tag names separated by a space and hit enter

The effects of combined glucose-electrolyte and sodium bicarbonate ingestion on prolonged intermittent exercise performance.
J Sports Sci. 2012; 30(10):975-83.JS

Abstract

This study examined the effects of combined glucose and sodium bicarbonate ingestion prior to intermittent exercise. Ninemales (mean ± s age 25.4 ± 6.6 years, body mass 78.8 ± 12.0 kg, maximal oxygen uptake (VO2 max)) 47.0 ± 7 ml · kg · min(-1)) undertook 4 × 45 min intermittent cycling trials including 15 × 10 s sprints one hour after ingesting placebo (PLA), glucose (CHO), sodium bicarbonate (NaHCO3) or a combined CHO and NaHCO3 solution (COMB). Post ingestion blood pH (7.45 ± 0.03, 7.46 ± 0.03, 7.32 ± 0.05, 7.32 ± 0.01) and bicarbonate (30.3 ± 2.1, 30.7 ± 1.8, 24.2 ± 1.2, 24.0 ± 1.8 mmol · l(-1)) were greater for NaHCO3 and COMB when compared to PLA and CHO, remaining elevated throughout exercise (main effect for trial; P < 0.05). Blood lactate concentration was greatest throughout exercise for NaHCO3 and COMB (main effect for trial; P < 0.05). Blood glucose concentration was greatest 15 min post-ingestion for CHO followed by COMB, NaHCO3 and PLA (7.13 ± 0.60, 5.58 ± 0.75, 4.51 ± 0.56, 4.46 ± 0.59 mmol · l(-1), respectively; P < 0.05). Gastrointestinal distress was lower during COMB compared to NaHCO3 at 15 min post-ingestion (P < 0.05). No differences were observed for sprint performance between trials (P = 1.00). The results of this study suggest that a combined CHO and NaHCO3 beverage reduced gastrointestinal distress and CHO availability but did not improve performance. Although there was no effect on performance an investigation of the effects in more highly trained individuals may be warranted.

Authors+Show Affiliations

Biomolecular and Sports Sciences, Faculty of Health and Life Sciences, Coventry University, Coventry, UK. mike.price@coventry.ac.ukNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22616569

Citation

Price, Mike James, and David Cripps. "The Effects of Combined Glucose-electrolyte and Sodium Bicarbonate Ingestion On Prolonged Intermittent Exercise Performance." Journal of Sports Sciences, vol. 30, no. 10, 2012, pp. 975-83.
Price MJ, Cripps D. The effects of combined glucose-electrolyte and sodium bicarbonate ingestion on prolonged intermittent exercise performance. J Sports Sci. 2012;30(10):975-83.
Price, M. J., & Cripps, D. (2012). The effects of combined glucose-electrolyte and sodium bicarbonate ingestion on prolonged intermittent exercise performance. Journal of Sports Sciences, 30(10), 975-83. https://doi.org/10.1080/02640414.2012.685086
Price MJ, Cripps D. The Effects of Combined Glucose-electrolyte and Sodium Bicarbonate Ingestion On Prolonged Intermittent Exercise Performance. J Sports Sci. 2012;30(10):975-83. PubMed PMID: 22616569.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effects of combined glucose-electrolyte and sodium bicarbonate ingestion on prolonged intermittent exercise performance. AU - Price,Mike James, AU - Cripps,David, Y1 - 2012/05/22/ PY - 2012/5/24/entrez PY - 2012/5/24/pubmed PY - 2012/10/23/medline SP - 975 EP - 83 JF - Journal of sports sciences JO - J Sports Sci VL - 30 IS - 10 N2 - This study examined the effects of combined glucose and sodium bicarbonate ingestion prior to intermittent exercise. Ninemales (mean ± s age 25.4 ± 6.6 years, body mass 78.8 ± 12.0 kg, maximal oxygen uptake (VO2 max)) 47.0 ± 7 ml · kg · min(-1)) undertook 4 × 45 min intermittent cycling trials including 15 × 10 s sprints one hour after ingesting placebo (PLA), glucose (CHO), sodium bicarbonate (NaHCO3) or a combined CHO and NaHCO3 solution (COMB). Post ingestion blood pH (7.45 ± 0.03, 7.46 ± 0.03, 7.32 ± 0.05, 7.32 ± 0.01) and bicarbonate (30.3 ± 2.1, 30.7 ± 1.8, 24.2 ± 1.2, 24.0 ± 1.8 mmol · l(-1)) were greater for NaHCO3 and COMB when compared to PLA and CHO, remaining elevated throughout exercise (main effect for trial; P < 0.05). Blood lactate concentration was greatest throughout exercise for NaHCO3 and COMB (main effect for trial; P < 0.05). Blood glucose concentration was greatest 15 min post-ingestion for CHO followed by COMB, NaHCO3 and PLA (7.13 ± 0.60, 5.58 ± 0.75, 4.51 ± 0.56, 4.46 ± 0.59 mmol · l(-1), respectively; P < 0.05). Gastrointestinal distress was lower during COMB compared to NaHCO3 at 15 min post-ingestion (P < 0.05). No differences were observed for sprint performance between trials (P = 1.00). The results of this study suggest that a combined CHO and NaHCO3 beverage reduced gastrointestinal distress and CHO availability but did not improve performance. Although there was no effect on performance an investigation of the effects in more highly trained individuals may be warranted. SN - 1466-447X UR - https://www.unboundmedicine.com/medline/citation/22616569/The_effects_of_combined_glucose_electrolyte_and_sodium_bicarbonate_ingestion_on_prolonged_intermittent_exercise_performance_ L2 - http://www.tandfonline.com/doi/full/10.1080/02640414.2012.685086 DB - PRIME DP - Unbound Medicine ER -