The training of strength-resistance in hypoxia: effect on muscle hypertrophy
- PMID: 31021559
- DOI: 10.7705/biomedica.v39i1.4084
The training of strength-resistance in hypoxia: effect on muscle hypertrophy
Abstract
Altitude and simulated-hypoxia training produces different physiological and/or biochemical adaptations in the skeletal muscle. These are: oxidative capacity, mitochondrial activity modifications, aerobic metabolism changes and myoglobin content. The purpose of this review was to analyze the adaptations of skeletal muscle in response to the combination of strength-resistance exercise and hypoxia. In general terms, the structural adaptations of the muscle are similar in hypoxia and normoxia except that hypoxia training produces an increase of the volume and cross-sectional area of the muscle fiber. In conclusion, the synergic effect of the combination of strength resistance training with normobaric hypoxia produces better and greater adaptations and beneficial physiological changes of the muscle tissue, which shows favorable phenotypic changes in skeletal muscle hypertrophy.
El entrenamiento en altitud y el entrenamiento en hipoxia simulada producen adaptaciones fisiológicas y bioquímicas en el músculo esquelético como la capacidad oxidativa, así como modificaciones de la actividad mitocondrial, en el metabolismo aerobio y en el contenido de mioglobina. El propósito de esta revisión fue analizar las adaptaciones del músculo esquelético en respuesta a la exposición temporal a la hipoxia combinada con ejercicios de fuerza y resistencia. Según los hallazgos de numerosos autores, las adaptaciones estructurales del músculo son similares en la hipoxia y en la 'normoxia', con excepción de un aumento en el volumen muscular y en el área de la sección transversal de la fibra muscular, que son mayores en la hipoxia. En conclusión, la sinergia del entrenamiento de fuerza y resistencia y la hipoxia normobárica produce mejores y mayores adaptaciones, ganancias y cambios fisiológicos beneficiosos en el tejido muscular, lo cual genera cambios fenotípicos favorables, como la hipertrofia del músculo esquelético.
Keywords: Hypoxia; exercise; muscle; hypertrophy; muscle strength; resistance training.
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