Chronic Grape Extract in Crosstraining Athletes: A Randomized Crossover Trial
NCT ID: NCT07106281
Last Updated: 2025-08-06
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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NOT_YET_RECRUITING
NA
30 participants
INTERVENTIONAL
2025-09-01
2026-01-31
Brief Summary
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Detailed Description
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Thirty trained CrossFit athletes consumed grape seed extract or a placebo for one week. The training session consisted of a 12-minute strength block, a 13-minute metabolic conditioning (MetCon), and a final 15-minute MetCon. The Rating of Perceived Exertion (RPE), Gastrointestinal Distress Score (GDS), blood pressure and the Perceived Recovery Status scale (RPS) were administered at the beginning of the session and at the end of each segment of the CrossFit session. DOMS was assessed using a visual analog scale at 24 and 48 hours after the CrossFit session.
Conditions
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Study Design
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RANDOMIZED
CROSSOVER
OTHER
QUADRUPLE
Study Groups
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Grape seed extract
600 mg of Grape seed extract
Grape Seed Extract
600mg of Grape Seed Extract
Placebo
Preparation of colorants, sweeteners, aromas, and acidulants
Placebo
Placebo
Interventions
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Grape Seed Extract
600mg of Grape Seed Extract
Placebo
Placebo
Eligibility Criteria
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Inclusion Criteria
* Body mass index: 18.5-30 kg/m2.
* Ability to understand the instructions, objectives, and study protocol.
* Minimum of 3 years of experience in crosstraining, with at least 6 hours of weekly training over the past 3 months.
* Resident on the island of Tenerife.
Exclusion Criteria
* Any chronic pathology in which the intake of nutritional supplements, especially use of antioxidant supplements during the 4 weeks prior to the start of the study.
* Any condition that, in the investigator's judgment, would impair the ability to participate in the study or represent a personal risk to the participant.
* Use of medications that may affect the study results.
* Unstable body weight for 3 months prior to the start of the study (\> 4 kg loss or gain in weight).
* Active tobacco abuse or illicit drug use, or history of treatment for alcohol abuse.
* On a special diet or prescribed for other reasons (e.g., celiac disease).
18 Years
35 Years
MALE
Yes
Sponsors
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Universidad de La Laguna, San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain.
UNKNOWN
Universidad de Granada
OTHER
Responsible Party
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Lucas Jurado-Fasoli
PhD
Locations
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Universidad de la Laguna
Santa Cruz de Tenerife, , Spain
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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CROSSUVA
Identifier Type: -
Identifier Source: org_study_id
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