Ingestion of a moderate dose of alcohol enhances physical exercise-induced changes in blood lactate concentration.

Ingestion of a moderate dose of alcohol enhances physical exercise-induced changes in blood lactate concentration. Braz J Med Biol Res. 2020;53(4):e9200 Authors: Teixeira-Coelho F, Santos DFC, Santos GA, Sousa TF, Moreira SR, Souza MVC, Wanner SP Abstract The consumption of alcoholic beverages influences carbohydrate and lipid metabolism, although it is not yet clear whether metabolism during physical exercise at different intensities is also affected. This was the objective of the present study. Eight young and healthy volunteers performed a treadmill test to identify the running speed corresponding to a lactate concentration of 4 mM (S4mM). At least 48 h later, they were subjected to two experimental trials (non-alcohol or alcohol) in which they performed two 1-km running sessions at the following intensities: 1) S4mM; 2) 15% above S4mM. In both trials, blood lactate, triglycerides, and glucose concentrations were measured before and after exercise. The acute alcohol intake increased triglycerides, but not lactate concentration under resting conditions. Interestingly, alcohol intake enhanced the exercise-induced increase in lactate concentration at the two intensities: S4mM (non-alcohol: 4.2±0.3 mM vs alcohol: 4.8±0.9 mM; P=0.003) and 15% above S4mM trial (P=0.004). When volunteers ingested alcohol, triglycerides concentration remained increased after treadmill running (e.g., at S4mM - at rest; non-alcohol: 0.2±0.5 mM vs alcohol: 1....
Source: Brazilian Journal of Medical and Biological Research - Category: Research Tags: Braz J Med Biol Res Source Type: research

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