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PapersPMID:20601736

The influence of caffeine and carbohydrate coingestion on simulated soccer performance.

International journal of sport nutrition and exercise metabolism2010The record ↗

01 · findings
2
02 · compound
1
03 · endpoints
2
04 · null
1
  1. Finding, very limited evidenceraisesCountermovement jump height
  2. Finding, very limited evidenceno effectRating of perceived exertion
Dose studied, every finding
caffeine 3.7 mg/kg body mass added to a carbohydrate-electrolyte solution, ingested 1 hr before exercise and every 15 min during a 90-min intermittent shuttle-running protocol
Population, every finding
male soccer players; carbohydrate-electrolyte solution given as background in both arms

What moved

1 findingHow to read these marks →
  • caffeine — increases countermovement jump height

    very limitedFindingreplicated ×4

    “Explosive leg power (CMJ) was improved during CAF (52.9 +/- 5.8 vs. CON 51.7 +/- 5.7 cm, p = .03).”
    Quoted verbatim from The influence of caffeine and carbohydrate coingestion on simulated soccer performance.
    Study
    crossover
    Participants
    15

    Permalink

What did not

1 finding
  • caffeine — no detected effect on rating of perceived exertion

    very limitedFindingNull resultreplicated ×10

    “There were no significant differences in passing skill, rating of perceived exertion, La, or body-mass losses between trials.”
    Quoted verbatim from The influence of caffeine and carbohydrate coingestion on simulated soccer performance.
    Study
    crossover
    Participants
    15

    Permalink

Study record

Read under
caffeine
Design, as each reading recorded it
crossover trial / randomised controlled trial
Species
human
Population
15 male soccer players
Participants
15
Comparator
placebo
Duration
not recorded
Endpoints measured
8
Record
extracted
Readings recorded
2