Glycemic and Blood Lactate Response to Maximal Incremental Treadmill Test
Year: 2015
Type: article
Abstract: During the incremental test, after reaching the anaerobic threshold, the lactate concentration increases exponentially. Additionally, the blood glycemia changes with the intensity and duration of the exercise. The present study aimed to verify the lactate and glycemic responses to a maximal incremental non-incline treadmill test. For that, 17 individuals, volunteers, were submitted to an incremental treadmill test, with an initial speed of 5 km/h and 1 km/h increments every minute, with no inclination. Before the tests, the volunteers consumed a breakfast meal containing 60.61% carbohydrate, 12.91% protein and 26.48% lipids. For the analysis of the blood lactate, were collected two blood samples: at rest and from 3 to 5 minutes after the test. For the analysis of the blood glycemia, were collected three blood samples: fasting, at rest 15 minutes after the provided meal, and from 3 to 5 minutes after the test. The Shapiro Wilk test was used to verify the normality of the data. For the lactate analysis, was applied the student’s t-test. For the glycemia analysis, was applied the ANOVA for repeated measures, with post hoc Bonferroni. The level of significance of the study was p < 0.05. The results indicated a significant increase in the lactate after the exercise (p = 0.002). The glycemia increased significantly after the exercise in relation to the fast (p = 0.015) and the rest (p = 0.042). Therefore, the maximal incremental in a non-incline treadmill test was capable of increasing significantly the lactate concentration and the blood glycemia.
Language: English
Subfield: Physiology (medical)
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W2264514431