[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100595940":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":10,"centralContacts":10,"locations":23,"responsibleParty":42,"collaborators":10,"id":46,"slug":47,"hasResults":48,"nctId":49,"briefTitle":50,"officialTitle":51,"acronym":10,"eligibilityCriteria":52,"healthyVolunteers":48,"sex":53,"minAge":54,"maxAge":55,"enrollmentInfo":56,"targetDuration":10,"studyType":59,"phases":10,"briefSummary":60,"conditions":61,"keywords":10,"overallStatus":25,"whyStopped":10,"lastUpdateSubmitDate":64,"lastUpdatePostDateStruct":65,"startDateStruct":68,"completionDateStruct":69,"leadSponsor":71,"locationsCount":72},{"fullName":5,"class":6},"Saglik Bilimleri Universitesi","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Smartphone Addiction Group",null,"Participants scoring above the cutoff values on the Smartphone Addiction Scale - Short Form (≥31 for males, ≥33 for females).",[13],"Other: Observational Assessment",{"label":15,"type":10,"description":16,"interventionNames":17},"Non-Addicted Group","Participants who do not meet the addiction criteria according to the SAS-SF. These individuals demonstrate regular or low smartphone use and serve as a comparative control group for musculoskeletal outcomes.",[13],[19],{"type":6,"name":20,"description":21,"armGroupLabels":22,"otherNames":10},"Observational Assessment","Participants in both groups undergo a one-time diagnostic evaluation consisting of:\n\nSmartphone Addiction Scale - Short Form (SAS-SF)\n\nNeck Disability Index (NDI)\n\nMyotonPRO measurement of cervical muscle tone, stiffness, and elasticity\n\nPressure pain threshold measurement using a handheld algometer\n\nSocial Media Addiction Scale (SMAS)\n\nNo therapeutic or behavioral intervention is applied. All procedures are non-invasive and conducted for observational purposes only.",[15,9],[24],{"facility":5,"status":25,"city":26,"state":27,"zip":28,"country":29,"countryCode":10,"cosmosGeoPoint":30,"geoPoint":35,"contacts":36},"RECRUITING","Istanbul","Üsküdar","34668","Turkey (Türkiye)",{"type":31,"coordinates":32},"Point",[33,34],28.94966,41.01384,{"lat":34,"lon":33},[37],{"name":38,"role":39,"phone":40,"phoneExt":10,"email":41},"Esra Pehlivan, Associate Professor","CONTACT","02164189616","fztesrakambur@yahoo.com",{"type":43,"investigatorFullName":44,"investigatorTitle":45,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","ESRA PEHLIVAN","PhD","100595940","smartphone-addiction-and-cervical-muscular-health-100595940",false,"NCT07038980","Smartphone Addiction and Cervical Muscular Health","Investigation of the Effect of Smartphone Addiction on Neck Pain and the Structural and Mechanical Properties of Neck Muscles in Young Adults","Inclusion Criteria:\n\n* Aged between 18-30 years\n* Actively using a smartphone\n* Volunteer consent provided\n\nExclusion Criteria:\n\n* Any diagnosed cervical spine pathology\n* Neurological, rheumatological, or psychiatric disease\n* Previous cervical surgery\n* Lack of cooperation or inability to understand instructions","ALL","18 Years","30 Years",{"count":57,"type":58},54,"ESTIMATED","OBSERVATIONAL","This cross-sectional observational study investigates how smartphone addiction affects neck pain severity, pressure pain threshold, and mechanical properties of cervical muscles in healthy young adults. Two groups-those with and without smartphone addiction-are compared based on validated addiction scales and objective muscle assessments using MyotonPRO and algometry.",[62,63],"Smartphone Addiction","Neck Pain","2025-06-26",{"date":66,"type":67},"2025-06-27","ACTUAL",{"date":64,"type":67},{"date":70,"type":58},"2026-07-01",{"name":5,"class":6},1]