Athletic Performance
Conditions
Keywords
sideritis, Extract, Performance, Blood lactate, Blood Glusose
Brief summary
The purpose of this study is to examine the effect of sideritis consumption on physiological and performance indicators in adult subjects and compare it with the control trial.
Detailed description
Significance of the Study: There is currently no evidence supporting an improvement in athletic performance following the use of sideritis. Despite existing studies showing that the mechanism through which sideritis acts is almost identical to that of other supplements that have been found to enhance athletic performance, direct evidence for its effectiveness remains lacking. Methodology: Initially, the participants of the study will visit the laboratory in order to be informed about the exercise research protocol. During the first visit, the participants will perform a maximal oxygen uptake (VO₂max) test on a treadmill using the RAMP protocol. In this specific method for determining maximal oxygen uptake, the treadmill speed will increase by 1 km/h every minute. Thus, the participants will reach exhaustion gradually. The participants will visit the laboratory two more times in order to perform the exercise protocols. One hour before each session, each participant will receive a dietary supplement, which will contain either 950 mg of sideritis or a specific dosage of a neutral substance (placebo). The selection of supplements will be random, as the study will be conducted using a double-blind design. This means that neither the participants nor the researcher will know which type of supplement has been consumed prior to the exercise protocol. The exercise protocol will consist of 60 minutes of treadmill running at an intensity of 70-75% of VO₂max, which has been individually determined for each participant based on the prior VO₂max test. During these 60 minutes, a gas exchange mask will be used to determine that participants are running at the specified intensity. After the 60 minutes, participants will wear the mask again and will run at a higher intensity (90-95% VO₂max) until exhaustion (Time to Exhaustion). Before each exercise protocol, and at 15, 30, 45, and 60 minutes during exercise, as well as immediately after completion, capillary blood samples will be collected to assess lactate and glucose levels. Additionally, body composition measurements will be conducted using the BIA method. Participants' dietary intake will also be recorded for the day prior to the VO₂max test, as well as for the days preceding the exercise protocol sessions. This recording will be conducted in order to determine whether any participant has consumed sideritis through their diet prior to the protocol. Statistical Analysis A 2-way repeated measures ANOVA will be performed. The statistical program SPSS 26 will be used.
Interventions
DIETARY_SUPPLEMENT950 mg of Sideritis Scardica (SidTea+) extract one hour pre-exercise
950 mg of Sideritis Scardica (SidTea+) extract one hour pre-exercise during exercise day
DIETARY_SUPPLEMENT950 mg of placebo one hour pre-exercise
950 mg of placebo one hour pre-exercise during exercise day
Sponsors
University of Thessaly
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy Individuals aged 18-40 years
Exclusion criteria
* Musculoskeletal Injury * Dietary supplements * Medication
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Blood lactate | Change from baseline to 15, 30, 45, 60 minutes during exercise and immediately post-exercise | Blood lactate concentration will be estimated using an analyzer. |
| Change in mean respiratory quotient during exercise | Mean respiratory quotient will be measured during 60 minute of exercise | The mean respiratory quotient during exercise will be measured using a gas analyzer |
| Change in mean oxygen consumption during exercise | Mean oxygen consumption will be measured during 60 minute of exercise | Mean oxygen consumption during exercise will be measured using a gas analyzer |
| Change in mean Heart rate during exercise | Mean heart rate will be measured during 60 minute of exercise | Mean heart rate during exercise will be measured using a heart rate monitor |
| Change in time to exhaustion | The time to exhaustion will be measured immediately after 60 minute of exercise | Time to exhaustion will be estimated using an electronic timer |
| Change in Glucose concentration | Change from baseline to 15, 30, 45, 60 minutes during exercise and immediately post-exercise | Glucose concentration will be estimated using an analyzer. |
| Change in heart rate | Change from baseline to 15, 30, 45, 60 minutes during exercise and immediately post-exercise | Heart rate will be estimated using monitor units. |
| Change in oxygen consumption | Change from baseline to 15, 30, 45, 60 minutes during exercise and immediately post-exercise | Oxygen consumption will be estimated using gas analyzer |
| Change in respiratory quotient | Change from baseline to 15, 30, 45, 60 minutes during exercise and immediately post-exercise | Respiratory quotient will be estimated using gas analyzer |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Body weight | Baseline | Body weight will be estimated using beam balance scale |
| Body fat (%) | Baseline | Body fat will be measured by bioelectrical impedance analysis |
| Resting Heart Rate | Baseline | Resting heart rate will be measured using a heart rate sensor |
| Diastolic and systolic blood pressure | Baseline | Diastolic and systolic blood pressure will be measured using a manual sphygmomanometer |
| Maximal oxygen consumption (VO2max) | Baseline | VO2max will be measured using an automated open-circuit spirometer |
Countries
Greece
Contacts
CONTACTAthanasios Jamurtas Z Jamurtas, Professor
STUDY_DIRECTORAthanasios Z Jamurtas, Professor
University of Thessaly
Outcome results
None listed