Oxidative stress
Conditions
Interventions
This is a randomized, controlled, placebo, triple-blind clinical trial. Experimental group: 13 men will receive 600 mL of purple grape juice. Control group: 13 men will receive 600 mL of placebo (wate
Sponsors
Universidade Federal de Santa Catarina
Universidade Federal de Santa Catarina
Eligibility
Sex/Gender
Male
Age
18 Years to 45 Years
Inclusion criteria
Inclusion criteria: Male; age between 18 and 45 years; trained runners with a history of participating in competitions at least once a year; run at least 5 hours a week
Exclusion criteria
Exclusion criteria: Smokers; carriers of any diseases, infectious or inflammatory processes; history of recent musculoskeletal injuries; users (the last 30 days will be considered) of vitamin supplements, minerals, ergogenic aids (such as carnitine, arginine, citrulline, taurine, creatine and caffeine, nitrate, beta-alanine and sodium bicarbonate) or chronic use medications
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Expected outcome 1: It is expected that the consumption of grape juice attenuates the increase in these indirect markers when compared to placebo. ;Outcome found 1: There was an increase in the serum markers AST and LDH in both groups (placebo and grape juice), but not in CK. Performance in the countermovement jump also worsened in both groups. However, the results did not differ between the groups, meaning that grape juice did not attenuate the induction of muscle damage. | — |
Secondary
| Measure | Time frame |
|---|---|
| Expected outcome 2: It is expected that consumption of grape juice will reduce impairments in sports performance when compared to placebo.;Expected outcome 3: Energy, carbohydrate, protein and lipid intake, as well as body composition, are expected to be similar between the groups.;Outcome found 3: The participants' dietary intake in the two weeks prior to the tests showed no significant difference between the groups. In terms of body composition, the grape juice group had higher body mass, fat-free mass and lean mass when compared to the placebo group.;Outcome found 2: The 5-km TT (Time Trial), running economy, and CMJ (countermovement jump) were impaired to a similar extent in the placebo and grape juice groups after exercise-induced muscle damage. | — |
Countries
Brazil
Contacts
Public ContactFernanda Hansen
Universidade Federal de Santa Catarina
Outcome results
None listed