Hand Reaction Speed and Manual Dexterity & Caffeine Dependence
Investigation of Hand Reaction Speed and Manual Dexterity in Young Adults With Caffeine Dependence
1 other identifier
observational
47
1 country
1
Brief Summary
This study aims to evaluate the effects of caffeine dependence on hand reaction time and fine motor skills in university students. By comparing individuals with high and low daily caffeine intake, the research will assess whether excessive caffeine consumption is associated with impaired upper extremity performance. Reaction speed will be measured using the Nelson Hand Reaction Time Test, and manual dexterity will be assessed with the Purdue Pegboard Test.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for all trials
Started Jun 2025
Shorter than P25 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 14, 2025
CompletedFirst Posted
Study publicly available on registry
June 24, 2025
CompletedStudy Start
First participant enrolled
June 26, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 20, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
June 20, 2026
June 27, 2025
June 1, 2025
12 months
June 14, 2025
June 26, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Nelson Reaction Time Test
The Nelson Reaction Time Test assesses visual motor response time using a dropped ruler. The score is recorded in milliseconds, with lower scores indicating faster (better) reaction time. The test does not use a fixed scale with minimum or maximum values, but typical results range from approximately 100 ms to 300 ms depending on age and condition. Higher scores indicate slower (worse) reaction time.
Within the study duration (1 month)
Secondary Outcomes (1)
Purdue Pegboard Test
Within the study duration (1 month)
Study Arms (2)
High Caffeine Group (≥300 mg/day)
Individuals consuming 300 mg or more of caffeine daily, meeting DSM-5/ICD-10 criteria for caffeine dependence.
Low Caffeine Group (≤200 mg/day)
Individuals consuming caffeine within recommended levels (20-200 mg/day).
Interventions
Individuals consuming 300 mg or more of caffeine daily, meeting DSM-5/ICD-10 criteria for caffeine dependence.
Individuals consuming caffeine within recommended levels (20-200 mg/day).
Eligibility Criteria
Healthy university students
You may qualify if:
- Age 18 to 30 years
- Currently enrolled university students
You may not qualify if:
- Neurological, vascular, orthopedic, acute or chronic conditions affecting hand function
- History of wrist surgery or visible hand deformity
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Saglik Bilimleri Universitesi
Istanbul, Üsküdar, 34668, Turkey (Türkiye)
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- CASE CONTROL
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assoc.Prof.Dr., PhD
Study Record Dates
First Submitted
June 14, 2025
First Posted
June 24, 2025
Study Start
June 26, 2025
Primary Completion (Estimated)
June 20, 2026
Study Completion (Estimated)
June 20, 2026
Last Updated
June 27, 2025
Record last verified: 2025-06