Abstract
BACKGROUND: While carbohydrate (CHO) and sodium citrate (SC) may independently provide ergogenic benefits to intense activity, the effect of CHO on the perceptual response and key acid-base kinetics following acute SC ingestion remains unknown. The aim of this study was to examine the effects of acute CHO intake on gastrointestinal symptoms (GIS) and blood acid-base responses alongside the ingestion of an individualised dosage of SC
(0.5 g. kg-1 body mass (BM)). METHODS: In a double-blind, randomised crossover design, ten recreationally active males (age, 24 ± 2 years; BM, 79.7 ± 5.7 kg; height, 1.8 ± 0.1 m; VO2max, 41.9 ± 10.2 mL. kg-1.min-1) ingested either encapsulated SC (0.5 g. kg-1body mass) or a sodium chloride control (0.07 g.kg-1 BM) on two occasions each, both with and without CHO (1.75 g.kg-1 BM). Gastrointestinal symptoms and fingertip capillary blood samples and were
collected every 17 min for 4 hr and later used to determine overall GIS and acid-base kinetics, respectively. RESULTS: Carbohydrate had no significant effect on GIS or blood acid-base kinetics following SC ingestion. Peak GIS emerged almost exclusively (13/15 instances) in the first measurement post-ingestion. Potentially meaningful increases in blood bicarbonate (4+
mmol.L-l ) were also noted following SC ingestion, both with and without CHO.
CONCLUSION: While CHO intake did not negatively impact total GIS or blood acid-base kinetics, co-consuming large quantities of CHO and SC promoted a prompt spike in GIS. Methods of reducing total volume/ingested in a single instance and navigating large interindividual variation in blood acid-base responses are required.
(0.5 g. kg-1 body mass (BM)). METHODS: In a double-blind, randomised crossover design, ten recreationally active males (age, 24 ± 2 years; BM, 79.7 ± 5.7 kg; height, 1.8 ± 0.1 m; VO2max, 41.9 ± 10.2 mL. kg-1.min-1) ingested either encapsulated SC (0.5 g. kg-1body mass) or a sodium chloride control (0.07 g.kg-1 BM) on two occasions each, both with and without CHO (1.75 g.kg-1 BM). Gastrointestinal symptoms and fingertip capillary blood samples and were
collected every 17 min for 4 hr and later used to determine overall GIS and acid-base kinetics, respectively. RESULTS: Carbohydrate had no significant effect on GIS or blood acid-base kinetics following SC ingestion. Peak GIS emerged almost exclusively (13/15 instances) in the first measurement post-ingestion. Potentially meaningful increases in blood bicarbonate (4+
mmol.L-l ) were also noted following SC ingestion, both with and without CHO.
CONCLUSION: While CHO intake did not negatively impact total GIS or blood acid-base kinetics, co-consuming large quantities of CHO and SC promoted a prompt spike in GIS. Methods of reducing total volume/ingested in a single instance and navigating large interindividual variation in blood acid-base responses are required.
Original language | English |
---|---|
Journal | Gazzetta Medica Italiana Archivio per le Scienze Mediche |
Publication status | Accepted/In press - 7 Sept 2023 |
Keywords
- ergogenic aids
- food ingestion
- Performance