[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100596039":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":10,"centralContacts":10,"locations":24,"responsibleParty":44,"collaborators":10,"id":48,"slug":49,"hasResults":50,"nctId":51,"briefTitle":52,"officialTitle":53,"acronym":10,"eligibilityCriteria":54,"healthyVolunteers":50,"sex":55,"minAge":56,"maxAge":57,"enrollmentInfo":58,"targetDuration":10,"studyType":61,"phases":10,"briefSummary":62,"conditions":63,"keywords":10,"overallStatus":27,"whyStopped":10,"lastUpdateSubmitDate":66,"lastUpdatePostDateStruct":67,"startDateStruct":70,"completionDateStruct":71,"leadSponsor":73,"locationsCount":74},{"fullName":5,"class":6},"Saglik Bilimleri Universitesi","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Smartphone-Addicted Group",null,"This group will consist of university students who will be identified as addicted to smartphones based on their scores on the Smartphone Addiction Scale - Short Version (SAS-SV). Participants scoring above the cut-off threshold will be assigned to this group. Weekly screen time will also be recorded.",[13],"Diagnostic Test: Thumb evaluations",{"label":15,"type":10,"description":16,"interventionNames":17},"Non-Addicted Control Group","This group will consist of university students who will be identified as not addicted to smartphones based on their SAS-SV scores, scoring below the determined cut-off point. Weekly screen time will also be recorded.",[13],[19],{"type":20,"name":21,"description":22,"armGroupLabels":23,"otherNames":10},"DIAGNOSTIC_TEST","Thumb evaluations","There is no therapeutic or experimental intervention in this study. All procedures will be limited to diagnostic evaluations. The study will include non-invasive biomechanical and sensory assessments to compare the thumb muscle characteristics and sensory discrimination between smartphone-addicted and non-addicted university students.\n\nSpecifically, muscle tone, stiffness, and elasticity will be measured using the MyotonPro™ device, and thumb sensory sensitivity will be evaluated using a Baseline Aesthesiometer with a two-point discrimination test. These assessments will be conducted during a single laboratory visit and will not involve any treatment, medication, or behavioral intervention.\n\nThis is a purely observational study aimed at identifying potential associations between smartphone usage patterns and thumb neuromuscular or sensory changes.",[15,9],[25],{"facility":26,"status":27,"city":28,"state":29,"zip":30,"country":31,"countryCode":10,"cosmosGeoPoint":32,"geoPoint":37,"contacts":38},"Esra Pehlivan","RECRUITING","Istanbul","Üsküdar","34668","Turkey (Türkiye)",{"type":33,"coordinates":34},"Point",[35,36],28.94966,41.01384,{"lat":36,"lon":35},[39],{"name":40,"role":41,"phone":42,"phoneExt":10,"email":43},"ESRA PEHLİVAN","CONTACT","02164189616","fztesrakambur@yahoo.com",{"type":45,"investigatorFullName":46,"investigatorTitle":47,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","ESRA PEHLIVAN","Principal Investigator","100596039","smartphone-addiction-on-the-biomechanical-properties-of-thumb-muscles-and-thumb-sensory-sensitivity-100596039",false,"NCT07040267","Smartphone Addiction on the Biomechanical Properties of Thumb Muscles and Thumb Sensory Sensitivity","Investigation of the Effect of Smartphone Addiction on the Biomechanical Properties of Thumb Muscles and Thumb Sensory Sensitivity in University Students","Inclusion Criteria:\n\n* Aged 18-30 years\n* Currently enrolled university students\n* Regular smartphone users\n\nExclusion Criteria:\n\n* Presence of systemic, chronic, or neuromuscular disorders\n* History of upper limb surgery or trauma\n* Neurological or orthopedic conditions affecting upper extremities\n* Subcutaneous fat over target muscles \\>20 mm\n* Presence of wounds or burns on the measurement area","ALL","18 Years","30 Years",{"count":59,"type":60},36,"ESTIMATED","OBSERVATIONAL","This study will aim to assess the effects of smartphone addiction on thumb muscle biomechanics and sensory sensitivity among university students. The research will investigate whether excessive smartphone use leads to significant differences in muscle tone, stiffness, elasticity, and sensory discrimination capabilities.",[64,65],"Smartphone Addiction","Thumb Injury","2025-07-01",{"date":68,"type":69},"2025-07-02","ACTUAL",{"date":66,"type":69},{"date":72,"type":60},"2026-07-01",{"name":5,"class":6},1]