The goal of this clinical trial is to investigate the effectiveness of post-exercise massage and cold-water immersion compared to control in young elite swimmers. The main questions it aims to answer are: * Is post-exercise techniques effective for recovery of the movement variability, , myotonometric, ergometric and perceptive parameters after fatigue? * Can neuromuscular fatigue protocols impair movement variability, myotonometric, ergometric and perceptive parameters? * What tests are reliable to assess different aspects of swimmers' recovery? Researchers will compare massage and cold-water immersion to control and to each other to see if recovery is antecipated. They will also compare an in-water and an out-of-water fatigue protocol to see if they are effective and can be used in different settings. Participants will: * Perform test and retest sessions to assess movement variability, myotonometric, ergometric and perceptive parameters. * Perform an in-water fatigue protocol consisting of 8x100m front-crawl sprints * Receive three recovery strategies in a randomized order (massage, cold-water immersion and control (i.e. rest) * Answer a questionnaire regarding ther beliefs and preferences for recovery.
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Movement variability
Timeframe: From enrollment to the end of crossover treatments at 6 weeks