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NCT03326934 · ClinicalTrials.gov registry record · NA
Impact of Dark Chocolate on Visual Performance
A NA study, sponsored by University of the Incarnate Word.
- Completed
- Registry status
- NA
- Development phase
- 57
- Enrollment target
NCT03326934: Completed NA study, sponsored by University of the Incarnate Word.
NCT03326934 is a NA study that has completed, run by University of the Incarnate Word. The registered enrollment target is 57 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (96% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT03326934, a NA study, has completed, sponsored by University of the Incarnate Word.
- COMPLETED
- Registry status
- NA
- Development phase
- 57 participants
- Enrollment target
Study Summary
The purpose is to conduct a randomized, single-masked crossover study to determine if acute consumption of a commercially available, highly palatable dark chocolate bar can improve visual performance. Vision testing will include multiple measures of contrast and color perception, reaction time, effects of distraction on visual performance during simulated hands-free phone calls, simulated marksmanship, as well as multiple, objective electro-diagnostic tests including standard and color visual-evoked potentials and various types of electro-retinograms to assess visual pathway function.
Primary Outcome
High and low contrast visual acuity, contrast sensitivity and color vision will be assessed using letter charts and computer generated stimuli. Thresholds will be compared using within subject repeated measures ANOVA and post-hoc paired t-tests across Dark and Milk chocolate. Z-scores may be used to combine data with different dependent variables.
Interventions
- DIETARY_SUPPLEMENT Dark chocolate
- DIETARY_SUPPLEMENT Milk Chocolate
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 57 participants |
| Start Date | 2017-06-25 |
| Est. Completion | 2018-08-30 |
| Phase | NA |
What the finished NCT03326934 record still lists
NCT03326934 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 57 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (96% lower).
The record links to 0 conditions, and to 2 interventions - of which Dark chocolate is the first listed.
NCT03326934 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT03326934 about?
NCT03326934 is a clinical study titled "Impact of Dark Chocolate on Visual Performance". The purpose is to conduct a randomized, single-masked crossover study to determine if acute consumption of a commercially available, highly palatable dark chocolate bar can improve visual performance. Vision testing will include multiple measures of contrast and color perception, reaction time, effe...
What is the current status of trial NCT03326934?
This trial is currently completed. It is a NA study. The enrollment target is 57 participants. The study started on 2017-06-25. Estimated completion is 2018-08-30.
What interventions are being tested in trial NCT03326934?
The interventions under investigation include: Dark chocolate (DIETARY_SUPPLEMENT), Milk Chocolate (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT03326934?
This trial is sponsored by University of the Incarnate Word, which has 11 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT03326934's enrollment target sits among peer trials
57 1261st of 2000 higher than 739 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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