Aerobic performance in rats subjected to incremental-speed running exercise: A multiple regression analysis study emphasizing thermoregulation-related variables.

Autor: Andrade MT; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Psychology Program, Faculdade de Minas (FAMINAS), Belo Horizonte, MG, Brazil., Barbosa NHS; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Souza-Junior RCS; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Fonseca CG; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Damasceno WC; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Regina-Oliveira K; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Drummond LR; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Department of Physical Education, Universidade do Estado de Minas Gerais, Unidade Divinópolis, Divinópolis, MG, Brazil., Bittencourt MA; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Kunstetter AC; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Andrade PVR; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Hudson ASR; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Prímola-Gomes TN; Exercise Biology Laboratory, Department of Physical Education, Universidade Federal de Viçosa, Viçosa, MG, Brazil., Teixeira-Coelho F; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Department of Sport Sciences, Institute of Health Sciences, Universidade Federal do Triângulo Mineiro, Uberaba, MG, Brazil., Coimbra CC; Laboratory of Endocrinology and Metabolism, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil., Pires W; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Physical Activity Laboratory, School of Physical Education, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil., Wanner SP; Exercise Physiology Laboratory, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. Electronic address: samuelwanner@ufmg.br.
Jazyk: angličtina
Zdroj: Journal of thermal biology [J Therm Biol] 2024 Dec; Vol. 126, pp. 104016. Date of Electronic Publication: 2024 Nov 29.
DOI: 10.1016/j.jtherbio.2024.104016
Abstrakt: Single-variable analyses have limited ability to explain complex phenomena such as the regulation of prolonged physical (aerobic) performance. Our study aimed to identify predictors of performance in rats subjected to incremental-speed running exercise. Notably, most variables assessed were associated with rats' thermoregulation. We extracted data from 355 records obtained in 216 adult Wistar rats. Hierarchical multiple linear regression analyses were conducted to identify the predictive power of eight variables. The distance traveled, a performance index, was the dependent variable. The independent variables included body mass, biological sex, body core temperature (T CORE ) measurement site, and the following thermoregulation-related variables: ambient temperature (T AMB ), initial T CORE , exercise-induced change in T CORE (ΔT CORE ), ΔT CORE from 0 to 10 min (ΔT CORE 0-10; when T CORE increase is fastest), and heat loss index (HLI). This analysis with eight variables revealed an adjusted R 2 of 0.495; T AMB , ΔT CORE , body mass, and ΔT CORE 0-10 had the highest predictive powers (β values: -0.700, 0.463, -0.353, and -0.130, respectively). Additional analyses consisted of separate regressions for each T CORE index measured: abdominal (T ABD ), brain (T BRAIN ), and colonic (T COL ) temperature. These analyses yielded adjusted R 2 values of 0.608 (T ABD ), 0.550 (T BRAIN ), and 0.437 (T COL ). Again, the distance traveled was primarily predicted by body mass and thermoregulation-related variables (T AMB , ΔT CORE , and ΔT CORE 0-10). Among these four variables, ΔT CORE was the only one with a positive β value (directly predicted performance), while the others had negative values. Collectively, these findings advance our understanding of performance regulation in rats, especially regarding the role of thermoregulation-related variables.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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