Coffeeberry Effects, Skill Performance, Soccer Performance
Conditions
Keywords
coffeeberry, caffeine, polyphenols, chlorogenic acid, exercise, soccer, football, skill, performance
Brief summary
This study of soccer skill performance has three objectives: 1. Compare effects of coffeeberry (300mg) and placebo ingestion on dribbling speed and precision, passing speed and accuracy, and sprint speed during a full simulated soccer match. 2. Compare effects of coffeeberry (300mg) and placebo ingestion on subjective measures (mental / physical energy and activation-deactivation (feelings or mood) during a full simulated soccer match. 3. Compare effects of coffeeberry (300mg) and placebo ingestion on chlorogenic acid (CGA) and caffeine metabolites in the blood 1-hour post ingestion, and other blood metabolites (glucose/lactate) throughout the simulated soccer match.
Interventions
OTHERBeverage
Free from added carbohydrates (contain 1g CHO only) and electrolytes are absent.
Sponsors
PepsiCo Global R&D
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
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 all visits * Willing to avoid caffeinated products and apples, berries/cherries for 24-h prior to all visits * 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 • Hypertension (\>140/\>90 mm Hg) * 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 |
|---|---|---|
| Dribbling speed | Change from pre-dose baseline through end of match 3.5 hours post consumption at multiple intervals each half of match | m/sec, increase would be better. Simulated soccer match in an indoor gym with pre-set targets. |
| Dribbling precision | Change from pre-dose baseline through end of match 3.5 hours post consumption at multiple intervals each half of match | Meters, more accuracy would be better. Simulated soccer match in an indoor gym with pre-set targets. |
| Passing accuracy | Change from pre-dose baseline through end of match 3.5 hours post consumption at multiple intervals each half of match. | 1 to 10 scale, a higher score would be better. Simulated soccer match in an indoor gym with pre-set targets. |
| Passing speed | Change from pre-dose baseline through end of match 3.5 hours post consumption at multiple intervals each half of match | km/h, increased passing speed would be better. Simulated soccer match in an indoor gym with pre-set targets. |
| Sprint speed. | Change from pre-dose baseline through end of match 3.5 hours post consumption at multiple intervals each half of match | m/sec, increased sprint speed would be better. In indoor gym with marked course. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Activation-deactivation (feelings or mood) | Pre-dose baseline, 60 minutes post-dose, half-time, and end of match (3.5 hours) | Checklist of 20 feelings using a 4 point scale from definitely do feel to definitely don't feel. More relaxed feelings or in a better mood would be better. |
| Mental energy | Pre-dose baseline, 60 minutes post-dose, half-time, and end of match (3.5 hours) | Visual Analog Scale (VAS), vertical marking on 100 mm horizontal line. Higher energy would be better |
| Physical energy | Pre-dose baseline, 60 minutes post-dose, half-time, and end of match (3.5 hours) | Visual Analog Scale (VAS), vertical marking on 100 mm horizontal line. Higher energy would be better |
| Blood analyte: Chlorogenic acid (CGA) | Pre-dose baseline, 60 minutes post-dose, half-time, and end of match (3.5 hours) | mmol/L to evaluate primary outcomes. n.a. for placebo. Capillary blood draw for frozen plasma analysis |
| Heart rate | Continuous from pre-dose baseline through end of match (3.5 hours) | By electronic reading. Lower would be better. |
| Hydration status | Pre-dose baseline and end of match (3.5 hours) | Urine osmolality in mOsm/kg change in concentration pre- vs. post-exercise |
| Gut comfort | Pre-dose baseline, 60 minutes post-dose, half-time, and end of match (3.5 hours) | Visual Analog Scale (VAS), vertical marking on 100 mm horizontal line. No or less nausea, fullness or bloating would be better |
| Blood analyte: Caffeine metabolites | Pre-dose baseline, 60 minutes post-dose, half-time, and end of match (3.5 hours) | ug/ml, to evaluate primary outcomes. n.a. for placebo. Capillary blood draw for frozen plasma analysis |
| Blood analyte: Glucose | Pre-dose baseline, 60 minutes post-dose, half-time, and end of match (3.5 hours) | mmol/L, more regulated would be better. Capillary blood draw for frozen plasma analysis |
| Blood analyte: Lactate | Pre-dose baseline, 60 minutes post-dose, half-time, and end of match (3.5 hours) | mmol/L, lower (delayed rise) would be better. Capillary blood draw for frozen plasma analysis |
| Rating of perceived exertion (RPE) | Half-time and end of match (3.5 hours) | By Borg scale, rated 6 to 20, very very light to very very hard. Lower values would be better |
Countries
United Kingdom
Outcome results
None listed