Trial · NCT02985606
How Does Altering the Timing of Pre-exercise Low-dose Caffeine Ingestion Affect Endurance Exercise Performance
NCT02985606, Not applicable, Completed, University of Exeter
3 sourcestrials-2026-11-12-0.5.0
Cite this record
ConductScience Library. How Does Altering the Timing of Pre-exercise Low-dose Caffeine Ingestion Affect Endurance Exercise Performance. Trials, record NCT02985606. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT02985606
On this page
Trial
As registered on ClinicalTrials.gov, in the graph's capture of the registry.
- Title
- How Does Altering the Timing of Pre-exercise Low-dose Caffeine Ingestion Affect Endurance Exercise Performance
- NCT number
- NCT02985606
- Status
- Completed
- Phases
- Not applicable
- Enrollment
- 14 participants, actual
- Lead sponsor
- University of Exeter
- Conditions
- Healthy
- Interventions
- Caffeine powder -60, Caffeine powder -30, Caffeine powder 0, Placebo powder -60, Placebo powder -30, Placebo powder 0
- First posted
- 2016-12-07
- Last updated
- 2018-10-16
Source ClinicalTrials.gov
Registered outcomes5
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
| List | Outcome | Time frame | Description |
|---|---|---|---|
| Primary | Work done in kilojoules (kJ) during a 15 minute time trial on a cycle ergometer | 15 minutes | |
| Secondary | Whole body fuel substrate utilisation measured using indirect calorimetry | 10 minutes | |
| Secondary | Change in plasma caffeine concentration and metabolites | 2 hours 45 minutes | |
| Secondary | Change in cognitive function measured using stroop test | 2 hours 45 minutes | |
| Secondary | Collection of saliva for genotyping of CYP1A2 | 30 mintes |
Source ClinicalTrials.gov
Outcomes0
Each outcome the trial posted results for, in ClinicalTrials.gov's words.
None in this release.
Results by group0
Each measurement the trial posted, group by group, in the words and numbers it posted.
None in this release.
Participant flow0
How many started, completed or left each group, period by period.
None in this release.
Adverse events0
Each adverse event the trial posted, group by group: the participants affected out of those at risk.
None in this release.
Adverse event totals0
The totals the trial posted for each group.
None in this release.
Papers1
The papers the trial lists on ClinicalTrials.gov.
| PMID | Listed as |
|---|---|
| 32232597 | DERIVED |
Source PubMed
Grants0
The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.
None in this release.
Trial comparisons0
Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.
None in this release.
Tests1
The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.
| Test | Named as |
|---|---|
| Stroop Color-Word Test | Secondary outcome |
Source ConductCognition
Data dates
The day each source was copied for this release.
Sources 3
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
- NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
- NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
For software
Read this trial from software.
The record and each of its lists are JSON, twenty rows a page. No key.
GET https://conductscience.org/api/trials/v1/NCT02985606
GET https://conductscience.org/api/trials/v1/NCT02985606/registered