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The Relationship between Inspiratory Muscle Strength and Cycling Performance: Insights from Hypoxia and Inspiratory Muscle Warm-Up.
Oliveira, André Luiz Musmanno Branco; Rodrigues, Gabriel Dias; Rohan, Philippe de Azeredo; Gonçalves, Thiago Rodrigues; Soares, Pedro Paulo da Silva.
Afiliação
  • Oliveira ALMB; Department of Physiology and Pharmacology, Fluminense Federal University, Rua Prof. Hernani Pires de Melo 101, Bloco E-217, Niterói 24210-130, RJ, Brazil.
  • Rodrigues GD; Department of Physiology and Pharmacology, Fluminense Federal University, Rua Prof. Hernani Pires de Melo 101, Bloco E-217, Niterói 24210-130, RJ, Brazil.
  • Rohan PA; Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy.
  • Gonçalves TR; Department of Physiology and Pharmacology, Fluminense Federal University, Rua Prof. Hernani Pires de Melo 101, Bloco E-217, Niterói 24210-130, RJ, Brazil.
  • Soares PPDS; Department of Physiology and Pharmacology, Fluminense Federal University, Rua Prof. Hernani Pires de Melo 101, Bloco E-217, Niterói 24210-130, RJ, Brazil.
J Funct Morphol Kinesiol ; 9(2)2024 May 31.
Article em En | MEDLINE | ID: mdl-38921633
ABSTRACT
Hypoxia increases inspiratory muscle work and consequently contributes to a reduction in exercise performance. We evaluate the effects of inspiratory muscle warm-up (IMW) on a 10 km cycling time trial in normoxia (NOR) and hypoxia (HYP). Eight cyclists performed four time trial sessions, two in HYP (FiO2 0.145) and two in NOR (FiO2 0.209), of which one was with IMW (set at 40% of maximal inspiratory pressure-MIP) and the other was with the placebo effect (PLA set at 15% MIP). Time trials were unchanged by IMW (NORIMW 893.8 ± 31.5 vs. NORPLA 925.5 ± 51.0 s; HYPIMW 976.8 ± 34.2 vs. HYPPLA 1008.3 ± 56.0 s; p > 0.05), while ventilation was higher in HYPIMW (107.7 ± 18.3) than HYPPLA (100.1 ± 18.9 L.min-1; p ≤ 0.05), and SpO2 was lower (HYPIMW 73 ± 6 vs. HYPPLA 76 ± 6%; p ≤ 0.05). A post-exercise-induced reduction in inspiratory strength was correlated with exercise elapsed time during IMW sessions (HYPIMW r = -0.79; p ≤ 0.05; NORIMW r = -0.70; p ≤ 0.05). IMW did not improve the 10 km time trial performance under normoxia and hypoxia.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Funct Morphol Kinesiol Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Funct Morphol Kinesiol Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Suíça