Influence of Coffeeberry Ingestion on Soccer Skill Performance

Influence of Coffeeberry Extract on Soccer Specific Skill Performance After Rest, During Simulated Soccer Match Play, and Following Fatiguing Exercise in Academy Football Players

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).

Study Overview

• Status: Completed
• Conditions: Skill Performance; Soccer Performance; Coffeeberry Effects
• Intervention / Treatment: Dietary supplement: Coffeeberry beverage; Other: Comparator beverage

• Study Type: Interventional
• Enrollment (Actual): 30
• Phase: Not Applicable

Contacts and Locations

Study Locations

• United Kingdom
  • Scotland
    • Stirling, Scotland, United Kingdom, FK9 4LA
      • University of Stirling, Health Science and Sport

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 16 years to 28 years (ADULT, CHILD)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: Male

Description

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

Study Plan

How is the study designed?

Design Details

• Primary Purpose: BASIC_SCIENCE
• Allocation: RANDOMIZED
• Interventional Model: CROSSOVER
• Masking: QUADRUPLE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: Coffeeberry beverage; 300 mg Coffeeberry extract in 300 ml beverage	Dietary supplement: Coffeeberry beverage; One exposure of 300 mg coffeeberry extract in a 300 ml flavored still beverage prior to exercise session
PLACEBO_COMPARATOR: Color and flavor matched beverage; 0 mg Coffeeberry extract in 300 ml flavor and color-matched beverage	Other: Comparator beverage; One 300 ml still beverage, color and flavor matched to experimental beverage prior to exercise session

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Dribbling speed	m/sec, increase would be better. Simulated match in an indoor gym with pre-set targets.	During 3.5 hours post consumption
Dribbling precision	Meters, more accuracy would be better. Simulated match in an indoor gym against pre-set targets.	During 3.5 hours post consumption
Passing accuracy	1-10 scale, higher score would be better. Simulated match in an indoor gym against pre-set targets.	During 3.5 hours post consumption
Passing speed by Time	km/h, increased would be better. Simulated match in an indoor gym against pre-set targets.	During 3.5 hours post consumption
Shooting accuracy	More shots on target would be better. Simulated match in an indoor gym against pre-set targets.	During 3.5 hours post consumption
Shooting speed	Milliseconds, faster would be better. Simulated match in an indoor gym against pre-set targets.	During 3.5 hours post consumption

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Sprint speed	m/sec, increase would be better. In indoor gym with marked course.	During 3.5 hours post consumption
High-intensity endurance running capacity	Run time to volitional fatigue in min, increase would be better. In indoor gym with marked course.	During 3.5 hours post consumption

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Blood analyte concentration: Capillary glucose	(mmol/L), more regulated would be better	During 3.5 hours post consumption
Blood analyte concentration: Capillary lactate	(mmol/L), lower (delayed rise) would be better	During 3.5 hours post consumption
Blood analyte concentration: Serum chlorogenic acid	(mmol/L), n.a. for placebo, introduced to evaluate primary outcomes	During 3.5 hours post consumption
Blood analyte concentration: Serum caffeine	(ug/mL), n.a. for placebo, Introduced to evaluate primary outcomes	During 3.5 hours post consumption
Rate of Perceived Exertion (RPE)	By Borg scale, rated 6-20, lower values would be better	During 3.5 hours post consumption
Activation/Deactivation (feelings and mood)	Checklist of feelings using a 4 point scale from definitely do to definitely don't feel, more relaxed and better mood would be better	During 3.5 hours post consumption
Mental energy	By Visual Analog Scale (VAS) vertical marking on 100 mm horizontal line, higher energy would be better	During 3.5 hours post consumption
Physical energy	By Visual Analog Scale (VAS) vertical marking on 100 mm horizontal line, higher energy would be better	During 3.5 hours post consumption
Heart rate	By electronic reading, lower would be better	During 3.5 hours post consumption
Gut comfort	By Visual Analog Scale (VAS) vertical marking on 100 mm horizontal scale, no or less nausa, fullness or bloating would be better	During 3.5 hours post consumption
Hydration status	Urine osmolality in mOsm/kg, comparing pre- vs. post-exercise concentration	During 3.5 hours post consumption

Collaborators and Investigators

• Sponsor: PepsiCo Global R&D
• Investigators: Principal Investigator: Stuart Galloway, PhD, U. Stirling

Study record dates

Study Major Dates

• Study Start (ACTUAL): November 6, 2019
• Primary Completion (ACTUAL): August 3, 2021
• Study Completion (ACTUAL): August 3, 2021

Study Registration Dates

• First Submitted: November 26, 2019
• First Submitted That Met QC Criteria: November 26, 2019
• First Posted (ACTUAL): November 29, 2019

Study Record Updates

• Last Update Posted (ACTUAL): March 24, 2022
• Last Update Submitted That Met QC Criteria: March 23, 2022
• Last Verified: March 1, 2022

More Information

Terms related to this study

• Keywords: exercise; caffeine; soccer; polyphenols; performance; coffeeberry; chlorogenic acid; skill
• Other Study ID Numbers: PEP-1904

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No