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Metabolic time-course response after resistance exercise: A metabolomics approach
Ricardo Berton1, Miguel S Conceição1, Cleiton A Libardi2
1a Laboratory of Exercise Physiology, Faculty of Physical Education , University of Campinas , Campinas , Brazil.
Journal of Sports Sciences
|October 1, 2016
Summary
Resistance exercise (RE) alters serum metabolite concentrations. This study tracked these changes using proton nuclear magnetic resonance (¹H NMR) spectroscopy, revealing key metabolic shifts post-workout.
Area of Science:
- Exercise Physiology
- Metabolomics
- Biochemistry
Background:
- Understanding the acute metabolic response to resistance exercise (RE) is crucial for optimizing training and recovery.
- Previous research has provided insights into specific metabolic pathways affected by exercise, but a comprehensive analysis of the global serum metabolome post-RE is lacking.
Purpose of the Study:
- To analyze the time course of the global metabolic acute response following resistance exercise (RE) using proton nuclear magnetic resonance (¹H NMR) spectroscopy.
- To identify specific serum metabolites that significantly change in concentration after RE in healthy young males.
Main Methods:
- Ten healthy young males underwent a standardized resistance exercise protocol (leg press and knee extension).
- Serum samples were collected at rest and at 5, 15, 30, and 60 minutes post-exercise.
- Proton nuclear magnetic resonance (¹H NMR) spectroscopy was employed for comprehensive serum metabolome analysis.
- One-way ANOVA was used for statistical analysis with a significance level of P ≤ 0.05.
Main Results:
- Resistance exercise significantly increased serum concentrations of 2-hydroxybutyrate, 2-oxoisocaproate, 3-hydroxyisobutyrate, alanine, hypoxanthine, lactate, pyruvate, and succinate.
- Conversely, concentrations of isoleucine, leucine, lysine, ornithine, and valine decreased post-RE compared to baseline.
- This study is the first to report significant changes in serum concentrations of 2-oxoisocaproate, 2-hydroxybutyrate, 3-hydroxyisobutyrate, lysine, hypoxanthine, and pyruvate following RE.
Conclusions:
- Resistance exercise induces rapid and significant global changes in the serum metabolome.
- Metabolomics, particularly ¹H NMR spectroscopy, is a valuable tool for elucidating exercise-induced metabolic alterations.
- The findings highlight the importance of considering the timing of blood collection in future studies investigating exercise metabolism.
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