Athletic Performance
Conditions
Interventions
This is a randomized, triple-blind, placebo-controlled, crossover clinical trial with a target sample of 20 competitive adolescent swimmers from Pelotas, RS, Brazil. Participants will receive, in a ra
Sponsors
Faculdade de Nutrição da Universidade Federal de Pelotas
Universidade Federal de Pelotas
Eligibility
Age
10 Years to 19 Years
Inclusion criteria
Inclusion criteria: Adolescent; competitive swimmers; aged 10 to 19 years; of both sexes; regularly engaged in swimming training and participating in regional, state, or national competitions; agreement to participate in the study and signature of the informed consent form by the legal guardian and assent by the adolescent when applicable
Exclusion criteria
Exclusion criteria: Musculoskeletal injury or clinical condition that prevents the performance of the physical tests; use of medications or supplements that may interfere with performance or physiological or biochemical responses; failure to comply with the study instructions; absence from any study stage
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Total time to complete the 50 m freestyle swimming test, measured after acute supplementation with citrulline malate or placebo in each crossover condition;Total time to complete the 100 m freestyle swimming test, measured during the physical testing session after acute supplementation with citrulline malate or placebo in each crossover condition;Total time to complete the 200 m freestyle swimming test, measured during the physical testing session after acute supplementation with citrulline malate or placebo in each crossover condition | — |
Secondary
| Measure | Time frame |
|---|---|
| Evaluation of IL-1, IL-6, and IL-10 gene expression, measured in post-exercise blood samples collected after the physical testing session following acute supplementation with citrulline malate or placebo in each crossover condition;Evaluation of TNF-a gene expression, measured in post-exercise blood samples collected after the physical testing session following acute supplementation with citrulline malate or placebo in each crossover condition;Evaluation of heart rate, measured before intervention, before the physical tests, and immediately, 1 minute, 3 minutes, 5 minutes, and 10 minutes after each swimming test during the physical testing session following acute supplementation with citrulline malate or placebo in each crossover condition;Evaluation of blood pressure, measured before intervention, before the physical tests, and after the 200 m freestyle swimming test during the physical testing session following acute supplementation with citrulline malate or placebo in each crossover condition;Evaluation of handgrip strength, measured by hand dynamometry during the physical testing session following acute supplementation with citrulline malate or placebo in each crossover condition;Evaluation of rating of perceived exertion, measured by the Borg scale after each swimming test (50 m, 100 m, and 200 m) during the physical testing session following acute supplementation with citrulline malate or placebo in each crossover condition;Expected evaluation of thiobarbituric acid reactive substances levels (TBARS), measured in post-exercise blood samples collected after the physical testing session following acute supplementation with citrulline malate or placebo in each crossover condition;Evaluation of the 50 m split time during the 100 m freestyle swimming test, measured by the time recorded at the first 50 m segment during the physical testing session after acute supplementation with citrulline malate or placebo in each crossover condition;Evaluation of 50 m split times | — |
Countries
BR
Contacts
Public ContactSimone Pieniz
Universidade Federal de Pelotas
Outcome results
None listed