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PapersPMID:17240784

Physiological and cognitive responses to caffeine during repeated, high-intensity exercise.

International journal of sport nutrition and exercise metabolism2006The record ↗

01 · findings
2
02 · compound
1
03 · endpoints
2
04 · null
2
  1. Finding, very limited evidenceno effectRating of perceived exertion
  2. Finding, insufficient evidenceno effectPeak power output
Dose studied, every finding
6 mg/kg caffeine, single dose 90 min before exercise, crossover with placebo and no-treatment control
Population, every finding
mixed-sex subjects (5 female of 17), repeated anaerobic exercise (two 60-s maximal cycling bouts)

Every finding here is a null result.

What did not

2 findingsHow to read these marks →
  • caffeine — no detected effect on rating of perceived exertion

    very limitedFindingNull resultreplicated ×10

    “Caffeine had no significant effect on peak power, work output, RPE, or peak heart rate.”
    Quoted verbatim from Physiological and cognitive responses to caffeine during repeated, high-intensity exercise.
    Study
    crossover
    Participants
    17

    Permalink

  • caffeine — no detected effect on peak power output

    insufficientFindingNull resultreplicated ×2

    “Caffeine had no significant effect on peak power, work output, RPE, or peak heart rate.”
    Quoted verbatim from Physiological and cognitive responses to caffeine during repeated, high-intensity exercise.
    Study
    crossover
    Participants
    17

    Permalink

Study record

Read under
caffeine
Design
crossover trial
Species
human
Population
17 subjects (5 female)
Participants
17
Comparator
placebo
Duration
not recorded
Endpoints measured
8
Record
extracted
Readings recorded
2