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Completed

NCT Number: NCT04181619

Influence of Coffeeberry Ingestion on Soccer Skill Performance

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).

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Key information

Conditions

Skill Performance Behavior Coffeeberry Effects Motor Activity Soccer Performance

Age range

16 year–28 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

University of Stirling, Health Science and Sport

Stirling, Scotland, FK9 4LA, United Kingdom

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Coffeeberry beverage

Dietary Supplement

One exposure of 300 mg coffeeberry extract in a 300 ml flavored still beverage prior to exercise session

Comparator beverage

Other

One 300 ml still beverage, color and flavor matched to experimental beverage prior to exercise session

Primary outcomes

  1. Dribbling speed

    Time frame: During 3.5 hours post consumption

    m/sec, increase would be better. Simulated match in an indoor gym with pre-set targets.

  2. Dribbling precision

    Time frame: During 3.5 hours post consumption

    Meters, more accuracy would be better. Simulated match in an indoor gym against pre-set targets.

  3. Passing accuracy

    Time frame: During 3.5 hours post consumption

    1-10 scale, higher score would be better. Simulated match in an indoor gym against pre-set targets.

  4. Passing speed by Time

    Time frame: During 3.5 hours post consumption

    km/h, increased would be better. Simulated match in an indoor gym against pre-set targets.

  5. Shooting accuracy

    Time frame: During 3.5 hours post consumption

    More shots on target would be better. Simulated match in an indoor gym against pre-set targets.

  6. Shooting speed

    Time frame: During 3.5 hours post consumption

    Milliseconds, faster would be better. Simulated match in an indoor gym against pre-set targets.

Secondary outcomes

  1. Sprint speed

    Time frame: During 3.5 hours post consumption

    m/sec, increase would be better. In indoor gym with marked course.

  2. High-intensity endurance running capacity

    Time frame: During 3.5 hours post consumption

    Run time to volitional fatigue in min, increase would be better. In indoor gym with marked course.

Other outcomes

  1. Blood analyte concentration: Capillary glucose

    Time frame: During 3.5 hours post consumption

    (mmol/L), more regulated would be better

  2. Blood analyte concentration: Capillary lactate

    Time frame: During 3.5 hours post consumption

    (mmol/L), lower (delayed rise) would be better

  3. Blood analyte concentration: Serum chlorogenic acid

    Time frame: During 3.5 hours post consumption

    (mmol/L), n.a. for placebo, introduced to evaluate primary outcomes

  4. Blood analyte concentration: Serum caffeine

    Time frame: During 3.5 hours post consumption

    (ug/mL), n.a. for placebo, Introduced to evaluate primary outcomes

  5. Rate of Perceived Exertion (RPE)

    Time frame: During 3.5 hours post consumption

    By Borg scale, rated 6-20, lower values would be better

  6. Activation/Deactivation (feelings and mood)

    Time frame: 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

  7. Mental energy

    Time frame: During 3.5 hours post consumption

    By Visual Analog Scale (VAS) vertical marking on 100 mm horizontal line, higher energy would be better

  8. Physical energy

    Time frame: During 3.5 hours post consumption

    By Visual Analog Scale (VAS) vertical marking on 100 mm horizontal line, higher energy would be better

  9. Heart rate

    Time frame: During 3.5 hours post consumption

    By electronic reading, lower would be better

  10. Gut comfort

    Time frame: 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

  11. Hydration status

    Time frame: During 3.5 hours post consumption

    Urine osmolality in mOsm/kg, comparing pre- vs. post-exercise concentration

Sponsors and collaborators

Lead sponsor

PepsiCo Global R&D

Industry

Registry information

Official study title

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

Important dates

Study start
2019
Primary completion
2021
Study completion
2021
First posted
Nov 29, 2019
Registry last updated
Mar 24, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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