Peak Velocity as an Alternative Method for Training Prescription in Mice

Frontiers in Physiology
Caroline de Carvalho PicoliSidney B Peres

Abstract

Purpose: To compare the efficiency of an aerobic physical training program prescribed according to either velocity associated with maximum oxygen uptake (vVO2max) or peak running speed obtained during an incremental treadmill test (Vpeak_K) in mice.Methods:Twenty male Swiss mice, 60 days old, were randomly divided into two groups with 10 animals each: 1. group trained by vVO2max(GVO2), 2. group trained by Vpeak_K(GVP). After the adaptation training period, an incremental test was performed at the beginning of each week to adjust training load and to determine the amount of VO2and VCO2fluxes consumed, energy expenditure (EE) and run distance during the incremental test. Mice were submitted to 4 weeks of aerobic exercise training of moderate intensity (velocity referring to 70% of vVO2maxand Vpeak_K) in a programmable treadmill. The sessions lasted from 30 to 40 min in the first week, to reach 60 min in the fourth week, in order to provide the mice with a moderate intensity exercise, totaling 20 training sessions.Results:Mice demonstrated increases in VO2max(ml·kg-1·min-1) (GVO2= 49.1% and GVP = 56.2%), Vpeak_K(cm·s-1) (GVO2= 50.9% and GVP = 22.3%), EE (ml·kg-0,75·min-1) (GVO2= 39.9% and GVP = 51.5%), and run distance (cm) (GVO2=...Continue Reading

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Citations

Sep 15, 2019·Nature Communications·Brenda Janice SánchezImed-Eddine Gallouzi
Jun 6, 2020·Journal of Applied Physiology·Caroline de Carvalho PicoliSidney Barnabé Peres

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