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Four-week experimental plus 1-week taper period using live high train low does not alter muscle glycogen content.
Bertucci, Danilo R; de Carvalho, Carlos Dellavechia; Scariot, Pedro P M; Kalva-Filho, Carlos A; Luches-Pereira, Gabriel; Arruda, Tarine B; Alves, Isabela S; Gardim, Camila B; Castiglia, Marcelo; Riberto, Marcelo; Gobatto, Claudio Alexandre; Papoti, Marcelo.
Afiliación
  • Bertucci DR; Triângulo Mineiro Federal University (UFTM), Av. Frei Paulino, nº 30, Abadia, Uberaba, MG, Brazil.
  • de Carvalho CD; Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), Avenida Bandeirantes, 3900, Vila Monte Alegre, Ribeirão Prêto, SP, Brazil. carlos_dellavechia@hotmail.com.
  • Scariot PPM; Faculty of Applied Sciences, State University of Campinas (FCA-UNICAMP), R. Pedro Zaccaria, 1300, Limeira, SP, Brazil.
  • Kalva-Filho CA; Human Movement Research Laboratory (MOVI-LAB), São Paulo State University (UNESP), Av. Eng. Luiz Edmundo C. Coube, nº 14-01, Núcleo Habitacional Presidente Geisel, Bauru, SP, Brazil.
  • Luches-Pereira G; School of Physical Education and Sports of Ribeirão Preto, University of São Paulo (EEFERP-USP), Avenida Bandeirantes, 3900, Vila Monte Alegre, Ribeirão Preto, SP, Brazil.
  • Arruda TB; Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), Avenida Bandeirantes, 3900, Vila Monte Alegre, Ribeirão Prêto, SP, Brazil.
  • Alves IS; School of Physical Education and Sports of Ribeirão Preto, University of São Paulo (EEFERP-USP), Avenida Bandeirantes, 3900, Vila Monte Alegre, Ribeirão Preto, SP, Brazil.
  • Gardim CB; Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), Avenida Bandeirantes, 3900, Vila Monte Alegre, Ribeirão Prêto, SP, Brazil.
  • Castiglia M; Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), Avenida Bandeirantes, 3900, Vila Monte Alegre, Ribeirão Prêto, SP, Brazil.
  • Riberto M; Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), Avenida Bandeirantes, 3900, Vila Monte Alegre, Ribeirão Prêto, SP, Brazil.
  • Gobatto CA; Faculty of Applied Sciences, State University of Campinas (FCA-UNICAMP), R. Pedro Zaccaria, 1300, Limeira, SP, Brazil.
  • Papoti M; Ribeirão Preto Medical School, University of São Paulo (FMRP-USP), Avenida Bandeirantes, 3900, Vila Monte Alegre, Ribeirão Prêto, SP, Brazil.
Eur J Appl Physiol ; 124(6): 1795-1805, 2024 Jun.
Article en En | MEDLINE | ID: mdl-38231229
ABSTRACT
This study aimed to investigate the effects of a 4-week live high train low (LHTL; FiO2 ~ 13.5%), intervention, followed by a tapering phase, on muscle glycogen concentration. Fourteen physically active males (28 ± 6 years, 81.6 ± 15.4 kg, 179 ± 5.2 cm) were divided into a control group (CON; n = 5), and the group that performed the LHTL, which was exposed to hypoxia (LHTL; n = 9). The subjects trained using a one-legged knee extension exercise, which enabled four experimental conditions leg training in hypoxia (TLHYP); leg control in hypoxia (CLHYP, n = 9); leg trained in normoxia (TLNOR, n = 5), and leg control in normoxia (CLNOR, n = 5). All participants performed 18 training sessions lasting between 20 and 45 min [80-200% of intensity corresponding to the time to exhaustion (TTE) reached in the graded exercise test]. Additionally, participants spent approximately 10 h day-1 in either a normobaric hypoxic environment (14.5% FiO2; ~ 3000 m) or a control condition (i.e., staying in similar tents on ~ 530 m). Thereafter, participants underwent a taper protocol consisting of six additional training sessions with a reduced training load. SpO2 was lower, and the hypoxic dose was higher in LHTL compared to CON (p < 0.001). After 4 weeks, glycogen had increased significantly only in the TLNOR and TLHYP groups and remained elevated after the taper (p < 0.016). Time to exhaustion in the LHTL increased after both the 4-week training period and the taper compared to the baseline (p < 0.001). Although the 4-week training promoted substantial increases in muscle glycogen content, TTE increased in LHTL condition.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Músculo Esquelético / Glucógeno Límite: Adult / Humans / Male Idioma: En Revista: Eur J Appl Physiol Asunto de la revista: FISIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania
Texto completo
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Imprimir
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Músculo Esquelético / Glucógeno Límite: Adult / Humans / Male Idioma: En Revista: Eur J Appl Physiol Asunto de la revista: FISIOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Alemania