[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100580942":3},{"organization":4,"armGroups":7,"interventions":18,"overallOfficials":10,"centralContacts":23,"locations":33,"responsibleParty":49,"collaborators":53,"id":57,"slug":58,"hasResults":59,"nctId":60,"briefTitle":61,"officialTitle":62,"acronym":10,"eligibilityCriteria":63,"healthyVolunteers":64,"sex":65,"minAge":66,"maxAge":67,"enrollmentInfo":68,"targetDuration":10,"studyType":71,"phases":10,"briefSummary":72,"conditions":73,"keywords":75,"overallStatus":36,"whyStopped":10,"lastUpdateSubmitDate":81,"lastUpdatePostDateStruct":82,"startDateStruct":85,"completionDateStruct":87,"leadSponsor":89,"locationsCount":90},{"fullName":5,"class":6},"Istanbul Gelisim University","OTHER",[8,14],{"label":9,"type":10,"description":11,"interventionNames":12},"Smartphone Addiction Group",null,"Individuals classified as having smartphone addiction based on the Smartphone Addiction Scale-Short Version (SAS-SV). Participants in this group scored 31 or higher for males and 33 or higher for females on the SAS-SV, indicating problematic smartphone use that meets the threshold for addiction.",[13],"Other: No intervention.",{"label":15,"type":10,"description":16,"interventionNames":17},"Non-Smartphone Addiction Group","Individuals who are not classified as having smartphone addiction based on the Smartphone Addiction Scale-Short Version (SAS-SV). Participants in this group scored below 31 for males and below 33 for females on the SAS-SV, indicating that their smartphone use does not meet the threshold for addiction.",[13],[19],{"type":6,"name":20,"description":21,"armGroupLabels":22,"otherNames":10},"No intervention.","Participants allocated to the groups were assessed only once. No intervention was applied, and they were not followed up.",[15,9],[24,29],{"name":25,"role":26,"phone":27,"phoneExt":10,"email":28},"Ayşem Ecem Özdemir, MSc. PT.","CONTACT","+905375112777","ecemozdemir6@gmail.com",{"name":30,"role":26,"phone":31,"phoneExt":10,"email":32},"Ecem Yalçın, MSc. PT.","+905065725644","fzt.eyalcin@gmail.com",[34],{"facility":35,"status":36,"city":37,"state":38,"zip":39,"country":40,"countryCode":10,"cosmosGeoPoint":41,"geoPoint":46,"contacts":47},"Istanbul Kent University","RECRUITING","Istanbul","Kağıthane","34320","Turkey (Türkiye)",{"type":42,"coordinates":43},"Point",[44,45],28.94966,41.01384,{"lat":45,"lon":44},[48],{"name":30,"role":26,"phone":31,"phoneExt":10,"email":32},{"type":50,"investigatorFullName":51,"investigatorTitle":52,"investigatorAffiliation":5,"oldNameTitle":10,"oldOrganization":10},"PRINCIPAL_INVESTIGATOR","Aysem Ecem Ozdemir","Research Assistant",[54,56],{"name":55,"class":6},"Istanbul University - Cerrahpasa",{"name":35,"class":6},"100580942","the-effects-of-smartphone-addiction-on-pinch-strength-muscle-stiffness-and-handwrist-function-in-young-adults-100580942",false,"NCT06843863","The Effects of Smartphone Addiction on Pinch Strength, Muscle Stiffness, and Hand\u002FWrist Function in Young Adults","The Effects of Smartphone Addiction on Pinch Strength, Muscle Stiffness, and Hand and Wrist Function in Young Adults: A Cross-Sectional Study","Inclusion Criteria:\n\n* Willing to participate in the study\n* Have been using a smartphone for more than one year\n* Aged between 18 and 25 years\n* Send 25 or more text messages or emails per day\n* Spend more than 2 hours browsing the internet and\u002For play games for more than one hour a day\n\nExclusion Criteria:\n\n* Having radiating\u002Fradicular pain in the upper extremity\n* Having neck pain\n* Congenital deformities in the upper extremity and neck\n* A history of diagnosed neurological, rheumatic, musculoskeletal, or cardiovascular diseases\n* Having previously undergone surgery on the neck and\u002For upper extremity\n* Having been diagnosed with De Quervain's disease or tendinopathy in the hand\u002Fhand wrist muscles before",true,"ALL","18 Years","25 Years",{"count":69,"type":70},134,"ESTIMATED","OBSERVATIONAL","Smartphones have become an indispensable part of daily life, and their increasing use has raised concerns about various health effects, including musculoskeletal symptoms. Repetitive movements of the thumb and hand muscles can lead to issues such as tendinosis, myofascial pain syndrome, and a decrease in pinch strength. Studies have shown that musculoskeletal symptoms related to smartphone use are common among young adults and university students. Additionally, an increase in device size may place greater strain on the wrist and finger muscles. Repetitive movements can cause stiffness changes in the thumb muscles, and the relationship between these changes and pinch strength is considered an important research topic. In this study, we aimed to investigate the effects of smartphone addiction on pinch strength, muscle stiffness, hand\u002Fwrist pain, and function in young adults.",[74],"Smartphone Addiction",[76,77,78,79,80],"Smartphone","Behavior","Addictive","Muscle stiffness","Musculoskeletal Pain","2025-04-28",{"date":83,"type":84},"2025-04-29","ACTUAL",{"date":86,"type":84},"2024-12-15",{"date":88,"type":70},"2025-06-15",{"name":5,"class":6},1]