Coffeeberry Effects, Skill Performance, Soccer Performance
Conditions
Keywords
coffeeberry, caffeine, polyphenols, chlorogenic acid, exercise, soccer, skill, performance
Brief summary
The study of soccer skill performance has 3 objectives. Objective 1 is to compare effects of coffeeberry (300mg) and placebo ingestion on dribbling speed and precision and passing and shooting speed and accuracy compared to placebo. 30 subjects will be assessed before dosing, after a 1 hr resting absorption period, and after simulated soccer match play. Of these 30, 20 subjects will proceed to Objective 2 (45 minutes of intense simulated soccer match play) and Objective 3 (repeated sprint activity continued until volitional fatigue).
Interventions
DIETARY_SUPPLEMENTCoffeeberry beverage
One exposure of 300 mg coffeeberry extract in a 300 ml flavored still beverage prior to exercise session
OTHERComparator beverage
One 300 ml still beverage, color and flavor matched to experimental beverage prior to exercise session
Sponsors
PepsiCo Global R&D
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Masking description
Double-blind
Eligibility
Sex/Gender
MALE
Age
16 Years to 28 Years
Healthy volunteers
Yes
Inclusion criteria
* Provide valid informed consent prior to any study procedure * Male soccer players age 16 to 28 years * 5-year soccer playing experience * 1-year regularly soccer training * Free of injuries * Willing to avoid alcohol in the 48-h period prior to main trials. * Willing to avoid caffeine, caffeinated and decaffeinated products, apples, and, berries/cherries for 24-h prior to main trials * Willing to record food intake over the 48-h period prior to the first trial and replicate for second trial * Willing to abstain from strenuous physical activity for 24-h before all visits
Exclusion criteria
* Smoking * Cardiovascular diseases * Diabetes or other metabolic disease * Presence of injuries * Major illnesses or surgery in prior 90 days * Participation in another clinical trial in the past month
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Passing accuracy | During 3.5 hours post consumption | 1-10 scale, higher score would be better. Simulated match in an indoor gym against pre-set targets. |
| Dribbling speed | During 3.5 hours post consumption | m/sec, increase would be better. Simulated match in an indoor gym with pre-set targets. |
| Dribbling precision | During 3.5 hours post consumption | Meters, more accuracy would be better. Simulated match in an indoor gym against pre-set targets. |
| Passing speed by Time | During 3.5 hours post consumption | km/h, increased would be better. Simulated match in an indoor gym against pre-set targets. |
| Shooting accuracy | During 3.5 hours post consumption | More shots on target would be better. Simulated match in an indoor gym against pre-set targets. |
| Shooting speed | During 3.5 hours post consumption | Milliseconds, faster would be better. Simulated match in an indoor gym against pre-set targets. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| High-intensity endurance running capacity | During 3.5 hours post consumption | Run time to volitional fatigue in min, increase would be better. In indoor gym with marked course. |
| Sprint speed | During 3.5 hours post consumption | m/sec, increase would be better. In indoor gym with marked course. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Heart rate | During 3.5 hours post consumption | By electronic reading, lower would be better |
| Blood analyte concentration: Capillary glucose | During 3.5 hours post consumption | (mmol/L), more regulated would be better |
| Hydration status | During 3.5 hours post consumption | Urine osmolality in mOsm/kg, comparing pre- vs. post-exercise concentration |
| Gut comfort | During 3.5 hours post consumption | By Visual Analog Scale (VAS) vertical marking on 100 mm horizontal scale, no or less nausa, fullness or bloating would be better |
| Blood analyte concentration: Capillary lactate | During 3.5 hours post consumption | (mmol/L), lower (delayed rise) would be better |
| Blood analyte concentration: Serum chlorogenic acid | During 3.5 hours post consumption | (mmol/L), n.a. for placebo, introduced to evaluate primary outcomes |
| Blood analyte concentration: Serum caffeine | During 3.5 hours post consumption | (ug/mL), n.a. for placebo, Introduced to evaluate primary outcomes |
| Rate of Perceived Exertion (RPE) | During 3.5 hours post consumption | By Borg scale, rated 6-20, lower values would be better |
| Activation/Deactivation (feelings and mood) | During 3.5 hours post consumption | Checklist of feelings using a 4 point scale from definitely do to definitely don't feel, more relaxed and better mood would be better |
| Mental energy | During 3.5 hours post consumption | By Visual Analog Scale (VAS) vertical marking on 100 mm horizontal line, higher energy would be better |
| Physical energy | During 3.5 hours post consumption | By Visual Analog Scale (VAS) vertical marking on 100 mm horizontal line, higher energy would be better |
Countries
United Kingdom
Outcome results
None listed