Acute effect of time-efficient intermittent and high-intensity continuous protocols on half-squat performance
Purpose: To analyze the acute effect a short high intensity interval training (HIIT) protocol or a longer high-intensity continuous running protocol upon subsequent resistance exercise performance in young women. Materials and Methods: Fifteen physically active healthy women (24±5 years) performed t...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | Brasil |
| Institución: | Instituto Brasileiro de Ensino e Pesquisa em Fisiologia do Exercício (IBPEFEX) |
| Repositorio: | Revista Brasileira de Prescrição e Fisiologia do Exercício |
| Idioma: | inglés |
| OAI Identifier: | oai:ojs.www.rbpfex.com.br:article/3000 |
| Acceso en línea: | https://www.rbpfex.com.br/index.php/rbpfex/article/view/3000 |
| Access Level: | acceso abierto |
| Palabra clave: | Muscle strength Fatigue Physical functional performance Fuerza muscular Fatiga Rendimiento físico funcional Força muscular Fadiga Desempenho físico funcional |
| Sumario: | Purpose: To analyze the acute effect a short high intensity interval training (HIIT) protocol or a longer high-intensity continuous running protocol upon subsequent resistance exercise performance in young women. Materials and Methods: Fifteen physically active healthy women (24±5 years) performed three randomized experimental sessions, with a minimum of a 48-hour rest period between them. Participants performed three sets of half-squat at 80% of one repetition maximum to volitional failure, preceded by a) a HIIT protocol (8 x 40s sprints at the velocity corresponding to maximal oxygen uptake); b) a 20-min continuous protocol (at heart rate corresponding to second ventilatory threshold); or c) a control condition with no previous endurance exercise. The maximum number of half-squat repetitions were recorded, and results were analyzed with repeated measures analysis of variance, with Bonferroni post-hoc test. Results: A progressive reduction in the number of half-squat repetitions was observed across the HIIT protocol (p<0.001) in comparison to the control session. A reduction in the number of repetitions in the continuous protocol was observed only in the first and second sets (p=0.037). The total work was greater in the control (26.0±8.4 repetitions) protocol in comparison to the continuous (19.7±7.1 repetitions) and HIIT (17.7±6.6 repetitions) protocols (p<0.001). Conclusion: Continuous or high-intensity interval running before strength training may compromise half-squat performance with the same load, suggesting that both affect the quality of subsequent lower limb exercise. |
|---|