[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100632352":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":20,"centralContacts":21,"locations":27,"responsibleParty":40,"collaborators":20,"id":44,"slug":45,"hasResults":46,"nctId":47,"briefTitle":48,"officialTitle":49,"acronym":20,"eligibilityCriteria":50,"healthyVolunteers":51,"sex":52,"minAge":53,"maxAge":54,"enrollmentInfo":55,"targetDuration":20,"studyType":58,"phases":59,"briefSummary":61,"conditions":62,"keywords":65,"overallStatus":69,"whyStopped":20,"lastUpdateSubmitDate":70,"lastUpdatePostDateStruct":71,"startDateStruct":74,"completionDateStruct":76,"leadSponsor":78,"locationsCount":79},{"fullName":5,"class":6},"Charles University, Czech Republic","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Structured Progressive Resistance Training Program","EXPERIMENTAL","Participants will complete an 8-week supervised progressive resistance training (PRT) program performed twice weekly. Each \\~45-minute session includes a warm-up, whole-body resistance exercises (with emphasis on lower limbs), and a cool-down. Exercises include squat variations, hip hinge movements, unilateral lower-limb exercises, upper-body pushing\u002Fpulling, and core stabilization.\n\nTraining intensity is guided by a youth-specific RPE scale (5-8), with progressive overload based on individual technique. Sessions are delivered in small groups under qualified supervision to ensure safety and adherence.\n\nThe program consists of three phases: familiarisation (weeks 1-2), progressive overload (weeks 3-5), and strength-oriented training (weeks 6-8). Outcomes are assessed pre- and post-intervention.",[13],"Behavioral: Progressive Resistance Training Program",[15],{"type":16,"name":17,"description":18,"armGroupLabels":19,"otherNames":20},"BEHAVIORAL","Progressive Resistance Training Program","An 8-week supervised progressive resistance training (PRT) program performed twice weekly in children aged 10-14 years. Each \\~45-minute session includes a warm-up, whole-body resistance exercises (with emphasis on lower-limb musculature), and a cool-down. Exercises include squat variations, hip hinge movements, unilateral lower-limb exercises, upper-body pushing and pulling, and core stabilization.\n\nTraining intensity is prescribed using a youth-specific rating of perceived exertion (RPE 5-8), with progressive overload applied individually based on proper technique. The program is divided into three phases: familiarisation (weeks 1-2), progressive overload (weeks 3-5), and strength-oriented training (weeks 6-8). Sessions are delivered in small groups under qualified supervision to ensure safety and adherence.",[9],null,[22],{"name":23,"role":24,"phone":25,"phoneExt":20,"email":26},"Michal Steffl, PhD","CONTACT","+420778701882","michal.steffl@ftvs.cuni.cz",[28],{"facility":29,"status":20,"city":30,"state":31,"zip":32,"country":33,"countryCode":20,"cosmosGeoPoint":34,"geoPoint":39,"contacts":20},"Faculty of Physical Education and Sport Charles University","Prague","Czech Republic","16200","Czechia",{"type":35,"coordinates":36},"Point",[37,38],14.42076,50.08804,{"lat":38,"lon":37},{"type":41,"investigatorFullName":42,"investigatorTitle":43,"investigatorAffiliation":5,"oldNameTitle":20,"oldOrganization":20},"PRINCIPAL_INVESTIGATOR","Michal Šteffl","Head of Department","100632352","feasibility-and-preliminary-effects-of-a-structured-resistance-training-program-in-children-aged-10-14-years-100632352",false,"NCT07512570","Feasibility and Preliminary Effects of a Structured Resistance Training Program in Children Aged 10-14 Years","Feasibility and Preliminary Effects of a Structured Resistance Training Programme in Children Aged 10-14 Years: A Randomised Controlled Pilot Study","Inclusion Criteria:\n\n* Children aged 10-14 years\n* Ability to safely participate in supervised resistance training\n* Written informed consent from a parent or legal guardian\n* Assent provided by the child participant\n* Willingness to comply with all study procedures and attend training sessions\n\nExclusion Criteria:\n\n* Acute illness at the time of enrolment\n* Recent musculoskeletal injury or immobilisation\n* Chronic cardiovascular, metabolic, or endocrine disorders\n* Use of medications that may affect muscle composition or function\n* Any medical or psychological condition that may compromise safety or adherence",true,"ALL","10 Years","14 Years",{"count":56,"type":57},31,"ESTIMATED","INTERVENTIONAL",[60],"NA","This study is a randomised controlled pilot trial designed to evaluate the feasibility, safety, and preliminary efficacy of a 12-week resistance training intervention in children aged 10-14 years. The study adheres to the CONSORT extension for randomised pilot and feasibility trials and incorporates key elements of the SPIRIT guidelines for clinical trial protocols.\n\nThe primary purpose of the study is to assess feasibility-related outcomes and to generate effect size estimates to inform the design of a subsequent fully powered randomised controlled trial (RCT).",[63,64],"Muscle Architecture","Ultrasonic Diagnosis",[66,67,68],"Resistance Training","Children","Feasibility Study","NOT_YET_RECRUITING","2026-04-01",{"date":72,"type":73},"2026-04-06","ACTUAL",{"date":75,"type":57},"2026-09-01",{"date":77,"type":57},"2028-09-30",{"name":5,"class":6},1]