RESPUESTAS CARDIORRESPIRATORIAS A INTENSIDAD UMBRAL. ESTUDIO COMPARATIVO ENTRE MEDIA SENTADILLA Y CICLOERGÓMETRO // CARDIORRESPIRATORY RESPONSES AT THRESHOLD INTENSITY. COMPARATIVE BETWEEN HALF SQUAT VS CYCLE ERGOMETER

R. Domínguez, M.V. Garnacho-Castaño, A.F. San Juan, M. Pérez-Ruiz, P. García-Fernández, P. Veiga-Herreros, J.L. Maté-Muñoz

Resumen


RESUMEN

Objetivo: Comparar las respuestas respiratorias, de frecuencia cardíaca (FC) y lactato a intensidad de umbral láctico (UL) en media sentadilla (MS) vs cicloergómetro. Métodos: 24 hombres (21,5±1,8 años, 180,1±5,2 cm, 81,9±8,7 kg) con experiencia en el entrenamiento de fuerza realizaron un test incremental progresivo en MS y cicloergómetro para determinar el UL. Durante los test se midieron las concentraciones de lactato, FC, consumo de oxígeno (VO2), producción de dióxido de carbono (VCO2), ventilación pulmonar (VE), equivalente ventilatorio del oxígeno (VE·VO2-1) y del dióxido de carbono (VE·VCO2-1). Una t student valoró las diferencias entre las dos modalidades de ejercicio. Resultados: las concentraciones de lactato, FC, VE, VE·VCO2-1 y VE·VO2-1 fueron superiores en MS vs cicloergómetro (p<0,05). Conclusiones: el UL puede ser detectado en el ejercicio de MS. Además, la realización de sesiones de entrenamiento contrarresistencias, a intensidad de UL, podrían ser utilizadas para mejorar la resistencia cardiovascular y la fuerza muscular.

PALABRAS CLAVE: resistencia, fuerza, entrenamiento contrarresistencias, umbral anaeróbico, transición aeróbica-anaeróbica

 

ABSTRACT 

Objective: To compare respiratory responses, heart rate (HR) and lactate at the intensity of the lactate threshold (LT) between half squat (HS) and cycloergometer. Methods: 24 men (21.5±1.8 years, 180.1 ± 5.2 cm, 81.9±8.7 kg) with experience in resitance performed a progressive incremental test in HS and cycloergometer to determine LT. During such test, the following parameters were measured: blood lactate concentrations, HR, oxygen consumption (VO2), carbon dioxide production (VCO2), pulmonary ventilation (PV), ventilatory equivalent of oxygen (PV·VO2-1) and ventilatory equivalent of carbon dioxide (PV·VCO2-1). A t student evaluated the variables analysed among the two exercise modalities. Results: blood lactate concentrations, HR, PV, and PV·VO2-1 and PV·VCO2-1 were higher in HS than in cycloergometer (p <0.05). Conclusions: LT can be detected in HS exercise. Furthermore, the resistance training sessions to the intensity of LT might be used in training sessions which seek to improve cardiovascular endurance and muscle strength.

 KEYWORDS: endurance, strength, against-resistance training, anaerobic threshold, aerobic-anaerobic transition


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DOI: http://dx.doi.org/10.15366/rimcafd2018.71.007

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