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Effects of manipulating the duration and intensity of aerobic training sessions on the physical performance of rats

Author

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  • Francisco Teixeira-Coelho
  • Cletiana Gonçalves Fonseca
  • Nicolas Henrique Santos Barbosa
  • Filipe Ferreira Vaz
  • Letícia Maria de Souza Cordeiro
  • Cândido Celso Coimbra
  • Washington Pires
  • Danusa Dias Soares
  • Samuel Penna Wanner

Abstract

This study investigated the effects of manipulating the load components of aerobic training sessions on the physical performance of rats. To achieve this purpose, adult male Wistar rats were divided into four groups: an untrained control (CON) group and training groups with a predominant overload in intensity (INT) or duration (DUR) or alternating and similar overloads in intensity and duration (ID). Prior to, during, and after 8 weeks of the control or training protocols, the performance of the rats (evaluated by their workload) was determined during fatiguing, incremental-speed treadmill running. Two additional incremental running tests were performed prior to and at the end of the protocols to measure the peak rate of oxygen consumption (VO2peak). As expected, the rats in the trained groups exhibited increased performance, whereas the untrained rats showed stable performance throughout the 8 weeks. Notably, the performance gain exhibited by the DUR rats reached a plateau after the 4th week. This plateau was not present in the INT or ID rats, which exhibited increased performance at the end of training protocol compared with the DUR rats. None of the training protocols changed the VO2peak values; however, these values were attained at faster speeds, which indicated increased running economy. In conclusion, our findings demonstrate that the training protocols improved the physical performance of rats, likely resulting from enhanced running economy. Furthermore, compared with overload in duration, overload in the intensity of training sessions was more effective at inducing performance improvements across the 8 weeks of the study.

Suggested Citation

  • Francisco Teixeira-Coelho & Cletiana Gonçalves Fonseca & Nicolas Henrique Santos Barbosa & Filipe Ferreira Vaz & Letícia Maria de Souza Cordeiro & Cândido Celso Coimbra & Washington Pires & Danusa Dia, 2017. "Effects of manipulating the duration and intensity of aerobic training sessions on the physical performance of rats," PLOS ONE, Public Library of Science, vol. 12(8), pages 1-19, August.
  • Handle: RePEc:plo:pone00:0183763
    DOI: 10.1371/journal.pone.0183763
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    Cited by:

    1. Ștefan Adrian Martin & Roxana Maria Martin-Hadmaș, 2022. "Differences in Adolescent’s Cardiometabolic Health: A Comparison Regarding Guided Team and Endurance Sports," IJERPH, MDPI, vol. 19(24), pages 1-11, December.
    2. Ram Gelman & Marc Berg & Yaron Ilan, 2022. "A Subject-Tailored Variability-Based Platform for Overcoming the Plateau Effect in Sports Training: A Narrative Review," IJERPH, MDPI, vol. 19(3), pages 1-16, February.
    3. Myla Aguiar Bittencourt & Samuel Penna Wanner & Ana Cançado Kunstetter & Nicolas Henrique Santos Barbosa & Paula Carolina Leite Walker & Pedro Victor Ribeiro Andrade & Tiago Turnes & Luiz Guilherme An, 2020. "Comparative effects of two heat acclimation protocols consisting of high-intensity interval training in the heat on aerobic performance and thermoregulatory responses in exercising rats," PLOS ONE, Public Library of Science, vol. 15(2), pages 1-24, February.

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