Concomitant application of sprint and high-intensity interval training on maximal oxygen uptake and work output in well-trained cyclists

Purpose In this study, we compared the effects of two different training modalities on maximal oxygen uptake and work output. Methods Participants included 26 well-trained mountain bike cyclists were divided into two groups. The first group trained using a conventional endurance protocol at steady-state (moderate) intensity and variable-intensity (high-moderate-low) free of maximal efforts. The second group combined endurance training with a sprint and high-intensity interval training protocol, which, respectively, were based on 30 s maximal repetitions and 4 min high intensity repetitions. Training duration was 8 weeks. A graded exercise test was administered pre- and post-training. Work output, oxygen uptake, minute pulmonary ventilation, heart rate and stroke volume were determined during the test. Results While work output significantly increased post-training in both groups ( P