Objetive: To investigate the cardiopulmonary responses of one strength training session in young women. Method: Twenty-three women aged between 18 and 29 years participated in this study. All the volunteers were submitted to the following tests: cardiopulmonary and one-repetition maximum (1-RM). The strength training protocol had emphasis on muscular hypertrophy, three sets from eight to twelve repetitions under 70% of 1-RM, with a one minute thirty-second break between sets. during the training session, the cardiopulmonary variables were measured with a metabolic gas analyzer and a telemetry module. Results: The results of the oxygen consumption in the training session were from 8.43 ± 1.76 ml/kg/min and of the heart rate of 108.08 ± 15.26 bpm. The results of the oxygen consumption and of the heart rate in the training were lower (p ≤ 0.01) than in the ventilatory threshold and in the oxygen consumption and the heart rate reserves. Conclusion: The obtained data show that the present protocol of strength training provided low overload to the cardiopulmonary system of young women.