Hand Reaction Speed and Manual Dexterity & Caffeine Dependence
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: High Caffeine Consumption, Low Caffeine Consumption.
- Who it may be relevant to
- Registry conditions: Healthy. Basic parameters: 18 years — 30 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Turkey (Türkiye)
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
Unsure about the terms? Read our patient guide →
Official title
Investigation of Hand Reaction Speed and Manual Dexterity in Young Adults With Caffeine Dependence
Overview
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.
Detailed description
This observational study investigates the effects of caffeine dependence on hand reaction time and manual dexterity in young adults. Caffeine is a widely consumed psychoactive substance, and its excessive intake may influence motor and cognitive performance. University students aged 18 to 30 are recruited and divided into two groups based on daily caffeine consumption and diagnostic criteria from DSM-5/ICD-10: a high caffeine group (≥300 mg/day) and a low caffeine group (20-200 mg/day). Data are collected using the Caffeine Consumption Frequency Questionnaire and behavioral assessments conducted in a controlled laboratory environment. Hand reaction speed is measured with the Nelson Hand Reaction Time Test, while manual dexterity is assessed using the Purdue Pegboard Test. Sociodemographic data and caffeine consumption are gathered via online forms. The aim is to determine whether excessive caffeine intake is associated with changes in reaction time and fine motor skills. Statistical analyses include normality testing, group comparisons, and correlation analyses, with significance set at p\<0.05. This study may provide new insights into the neuromotor effects of caffeine consumption in a university population.
Interventions
- Other High Caffeine Consumption
Individuals consuming 300 mg or more of caffeine daily, meeting DSM-5/ICD-10 criteria for caffeine dependence. - Other Low Caffeine Consumption
Individuals consuming caffeine within recommended levels (20-200 mg/day).
Primary outcome measures
- Nelson Reaction Time Test [Time frame: Within the study duration (1 month)]
Secondary outcome measures (1)
- Purdue Pegboard Test [Time frame: Within the study duration (1 month)]
Eligibility criteria
Inclusion criteria
- Age 18 to 30 years
- Currently enrolled university students
Exclusion criteria
- Neurological, vascular, orthopedic, acute or chronic conditions affecting hand function
- History of wrist surgery or visible hand deformity
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Study design
- Observational model
- Case-control
Study locations
Turkey (Türkiye) · 1 center
- Saglik Bilimleri Universitesi — Istanbul
Identifiers
NCT: NCT07032454 · Caffeine_1