Oxygen uptake kinetics (VO2) is an indicator of functional capacity (CF). The objective of this study is to analyze the oxygen uptake kinetics in athletes of different disciplines, according to the predominant energy system in each one of them. A comparative, non-experimental and cross-sectional study was designed in 22 subjects of selected federated sports corresponding to futsal, weightlifting and triathlon through intentional non-probabilistic sampling. The following variables were assessed: weight, height, body mass index (BMI), blood pressure, waist circumference and oxygen uptake kinetics. The main results show that the oxygen uptake kinetics (VO2) showed that sportsmen who practice futsal, show a better recovery (p <0.05) compared to athletes of triathlon and weightlifting.