The effect of short-term supplementation of caffeine and beet juice with high, low dose and placebo on vasodilator indices and athletic performance in elite runners

Evaluate Acute caffeine supplementation along with beet juice effect on vasodilatory and performance factors in elite runners.

Quantitative research of semi-experimental-field laboratory with targeted selection of professional runners randomly, cross-sectionally, cross-sectionally and three-blind with 3 groups, each group received all three complementary doses, so each group is considered as its own control group The realized sample size was 10 people. Randomization using dice throws both for how the first, second and third groups are selected and what dose each group receives for the first, second and third stages.

Blood sampling test and two 5000 aerobics in the Sports Medicine Center and assessment and evaluation of the National Olympic and Paralympic Academy

Professional male runners aged 18 to 30 with at least 3 training sessions per week.Participants were asked not to eat any diet containing nitrate or caffeine for 24 hours prior to the experiment, including sausages, processed meats, pastes, coffee, chewing gum, syrups, tea, and tobacco. For this reason, participants were given a list of all dietary sources. They were asked not to exercise heavily for 72 hours before the test.

Intervention and control group 1: High dose of combined supplement (9.6 mmol nitrate in beet juice made by Sensei Pharmaceutical Company and 400 mg of caffeine made by Karen Pharmaceutical Company) which is combined with 250 cc of water. The group received all three complementary doses crossover and randomly, so each intervention group is considered as its control group.

Heart rate, systolic and diastolic blood pressure, endothelin-1 [ET-1], collagen 18, nitric oxide [NO] and nitrite levels were measured

First, the total sample size of 30 people consisting of members of the national endurance athletics team of the country who met the conditions in the descriptive questionnaire and had physical, health and sports conditions were determined. Then they were divided into 3 random groups so that their names were written in the same way on the same sheets and 10 of them were selected by an unrelated person for each group and divided into three groups. The names were randomly determined without replacement from the container and the order of supplementation was determined.

Subjects participating in the project, as well as the researcher who did not know the type of supplement offered to the subjects, and the collection was done only based on the number of each group and the analytical laboratory not knew the names of the individuals in each intervention group and the type of supplement they consumed

There are no plans to publish. If a researcher needs the information of the participants, he / she can contact the person in charge of the article or the editor of the publication where the article is published, so that the participants can provide details if they wish.