Effects of different inspiratory muscle warm-up loads on mechanical, physiological and muscle oxygenation responses during high-intensity running and recovery

Autor(es)

Marostegan, Anita B. ; Gobatto, Claudio A. ; Rasteiro, Felipe M. ; Hartz, Charlini S. ; Moreno, Marlene A. ; Manchado-Gobatto, Fulvia B.

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 12, n. 1, p. 13-pg., 2022-07-02.

Resumo

Inspiratory muscle warm-up (IMW) has been used as a resource to enhance exercises and sports performance. However, there is a lack of studies in the literature addressing the effects of different IMW loads (especially in combination with a shorter and applicable protocol) on high-intensity running and recovery phase. Thus, this study aimed to investigate the effects of three different IMW loads using a shorter protocol on mechanical, physiological and muscle oxygenation responses during and after high-intensity running exercise. Sixteen physically active men, randomly performed four trials 30 s all-out run, preceded by the shorter IMW protocol (2 x 15 breaths with a 1-min rest interval between sets, accomplished 2 min before the 30 s all-out run). Here, three IMW load conditions were used: 15%, 40%, and 60% of maximal inspiratory pressure (MIP), plus a control session (CON) without the IMW. The force, velocity and running power were measured (1000 Hz). Two near-infrared spectroscopy (NIRS) devices measured (10 Hz) the muscle's oxygenation responses in biceps brachii (BB) and vastus lateralis (VL). Additionally, heart rate (HR) and blood lactate ([Lac]) were also monitored. IMW loads applied with a shorter protocol promoted a significant increase in mean and minimum running power as well as in peak and minimum force compared to CON. In addition, specific IMW loads led to higher values of peak power, mean velocity (60% of MIP) and mean force (40 and 60% of MIP) in relation to CON. Physiological responses (HR and muscles oxygenation) were not modified by any IMW during exercise, as well as HR and [Lac] in the recovery phase. On the other hand, 40% of MIP presented a higher tissue saturation index (TSI) for BB during recovery phase. In conclusion, the use of different loads of IMW may improve the performance of a physically active individual in a 30 s all-out run, as verified by the increased peak, mean and minimum mechanical values, but not in performance assessed second by second. In addition, 40% of the MIP improves TSI of the BB during the recovery phase, which can indicate greater availability of O-2 for lactate clearance. (AU)

• Processo FAPESP: 19/20894-2 - Corrida atada máxima aplicada a jogadores de futebol e indivíduos ativos em dois cenários: investigações sobre potência mecânica e oxigenação em músculos mais e menos ativos por modelo de redes complexas
• Beneficiário: Anita Brum Marostegan
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
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• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 16/50250-1 - O segredo de jogar futebol: Brasil versus Holanda
• Beneficiário: Sergio Augusto Cunha
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 12/06355-2 - Padronização de testes específicos livres e atados, para determinação de parâmetros aeróbios e anaeróbios em canoagem slalom: relações com a performance
• Beneficiário: Fúlvia de Barros Manchado Gobatto
• Modalidade de apoio: Auxílio à Pesquisa - Regular
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• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 09/08535-5 - Padronização e validação de testes aeróbios e anaeróbios em condições de campo e laboratório, utilizando modelos livre, atado e semi-atado, em corredores fundistas e velocistas
• Beneficiário: Claudio Alexandre Gobatto
• Modalidade de apoio: Auxílio à Pesquisa - Regular