Influence of the ACTN3 Genotype and the Exercise Intensity on the Respiratory Exchange Ratio and Excess Oxygen Consumption After Exercise.

Autor:	de L Corrêa H; Graduation Program in Physical Education and Health, Catholic University of Brazil-UCB-DF, Brasília, DF, Brazil., Ribeiro HS; Graduation Program in Physical Education and Health, Catholic University of Brazil-UCB-DF, Brasília, DF, Brazil., Maya ÁTD; Graduation Program in Physical Education and Health, Catholic University of Brazil-UCB-DF, Brasília, DF, Brazil.; Interdisciplinary Research Center, ICESP, Brasília, DF, Brazil., Neves RP; Graduation Program in Physical Education and Health, Catholic University of Brazil-UCB-DF, Brasília, DF, Brazil., de Moraes MR; Graduation Program in Physical Education and Health, Catholic University of Brazil-UCB-DF, Brasília, DF, Brazil., Lima RM; Graduation Program in Physical Education, Brazil University (UnB), Brasília, DF, Brazil ; and., Nóbrega OT; Graduation Program in Health Sciences, Brazil University (UnB), Brasília, DF, Brazil., Ferreira AP; Graduation Program in Physical Education and Health, Catholic University of Brazil-UCB-DF, Brasília, DF, Brazil.; Interdisciplinary Research Center, ICESP, Brasília, DF, Brazil.
Jazyk:	angličtina
Zdroj:	Journal of strength and conditioning research [J Strength Cond Res] 2021 May 01; Vol. 35 (5), pp. 1380-1388.
DOI:	10.1519/JSC.0000000000002911
Abstrakt:	Abstract: de L. Corrêa, H, Ribeiro, HS, Maya, ÁTD, Neves, RP, de Moraes, MR, Lima, RM, Nóbrega, OT, and Ferreira, AP. Influence of the ACTN3 genotype and the exercise intensity on the respiratory exchange ratio and excess oxygen consumption after exercise. J Strength Cond Res 35(5): 1380-1388, 2021-This study aimed to assess the respiratory exchange ratio (RER) and excess postexercise oxygen consumption (EPOC) after high-intensity interval training and continuous moderate-intensity aerobic training in accordance with the ACTN3 genotype. A cross-sectional study with 30 physically active individuals who participated in 3 experimental sessions, as follows: a high-intensity interval aerobic exercise, for 3 minutes at 115% anaerobic threshold, with 90 seconds of passive recovery; a continuous moderate-intensity aerobic exercise at 85% anaerobic threshold; and a control session. Respiratory exchange ratio and V̇o2 were obtained through an indirect, calorimetry-based gas analysis method, using a breath-by-breath approach, assessed at baseline, during the trials, and at 1, 2, 3, and 4 hours after exercise. We found that lower postexercise RER values were observed only in subjects with the X allele, in both the high- and the moderate-intensity training protocols. Homozygous RR subjects showed no differences in postexercise RER compared with the scores at the control day. After both sessions of exercise, EPOC levels were higher compared with scores at the control day for 2 hours among X allele carriers, and only in the first hour among RR homozygous. Thus, the RER and EPOC presented different responses after moderate and intense exercise according to the ACTN3 genotype. Moreover, individuals with the X allele of the ACTN3 gene show a higher oxidation of fats in the postexercise period. (Copyright © 2018 National Strength and Conditioning Association.)
Databáze:	MEDLINE
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