[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100605362":3},{"organization":4,"outcomesModule":7,"designInfo":48,"detailedDescription":51,"studyPopulation":51,"armGroups":55,"interventions":62,"overallOfficials":51,"centralContacts":68,"locations":74,"responsibleParty":92,"collaborators":51,"id":96,"slug":51,"hasResults":97,"nctId":98,"briefTitle":99,"officialTitle":100,"acronym":51,"eligibilityCriteria":101,"healthyVolunteers":102,"sex":103,"minAge":104,"maxAge":105,"enrollmentInfo":106,"targetDuration":51,"studyType":109,"phases":110,"briefSummary":111,"conditions":112,"keywords":51,"overallStatus":77,"whyStopped":51,"lastUpdateSubmitDate":114,"lastUpdatePostDateStruct":115,"startDateStruct":118,"completionDateStruct":120,"leadSponsor":122,"locationsCount":123},{"fullName":5,"class":6},"Universiteit Antwerpen","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":21,"otherOutcomes":28},[9,13,16,19],{"measure":10,"description":11,"timeFrame":12},"sEMG median power frequency (MPF) - test","A parameter used to analyze the frequency content of the electrical signals generated by muscle activity. Changes in the MPF can indicate alterations in muscle fiber recruitment and metabolic changes during sustained muscle contractions","first test session at day 1",{"measure":14,"description":11,"timeFrame":15},"sEMG median power frequency - retest","second test session after 1 week",{"measure":17,"description":18,"timeFrame":12},"sEMG RMS amplitude - test","A single value that represents the magnitude of the sEMG signal over a specified period of time, higher RMS values indicate greater muscle activation.",{"measure":20,"description":18,"timeFrame":15},"sEMG RMS amplitude - retest",[22,25],{"measure":23,"description":24,"timeFrame":12},"VAS score - test","subjective fatigue score",{"measure":26,"description":24,"timeFrame":27},"VAS score - retest","second session after 1 week",[29,32,36,39,42,45],{"measure":30,"description":31,"timeFrame":12},"Age","age in years",{"measure":33,"description":34,"timeFrame":35},"Gender","male\u002Ffemale\u002Fother","first session",{"measure":37,"description":38,"timeFrame":12},"Height","body height in centimeters",{"measure":40,"description":41,"timeFrame":12},"Weight","body weight in kilograms",{"measure":43,"description":44,"timeFrame":12},"Leg length","Length measured from trochanter major to the ground in centimeters",{"measure":46,"description":47,"timeFrame":12},"Physical Activity","PAQ-A (physical activity questionaire for adolescents): a self-administered, 7-day recall instrument. It was developed to assess general levels of physical activity for high school students in grades 9 to 12 and approximately 14 to 19 years of age.",{"allocation":49,"interventionModel":50,"interventionModelDescription":51,"primaryPurpose":52,"observationalModel":51,"timePerspective":51,"maskingInfo":53},"NA","SINGLE_GROUP",null,"BASIC_SCIENCE",{"masking":54,"maskingDescription":51,"whoMasked":51},"NONE",[56],{"label":57,"type":58,"description":59,"interventionNames":60},"Fatigue","EXPERIMENTAL","To induce muscular fatigue, participants will perform a repetitive bodyweight squat until 1) the squat cannot be performed over the full range of motion for 2 consecutive repetitions and 2) physical exertion occurs (10-point Borg scale).",[61],"Diagnostic Test: Surface Electromyography",[63],{"type":64,"name":65,"description":66,"armGroupLabels":67,"otherNames":51},"DIAGNOSTIC_TEST","Surface Electromyography","The primary lower limb muscles to be monitored include the gluteus medius, rectus femoris, vastus lateralis (quadriceps ), biceps femoris (hamstrings), tibialis anterior, and gastrocnemius medialis (calves). This setup fully utilizes a 16-channel sEMG system by monitoring each muscle group bilaterally to capture comprehensive data on muscle activity and fatigue.",[57],[69],{"name":70,"role":71,"phone":72,"phoneExt":51,"email":73},"Ann Hallemans, Associate Professor, PhD","CONTACT","+3232652912","ann.hallemans@uantwerpen.be",[75],{"facility":76,"status":77,"city":78,"state":51,"zip":79,"country":80,"countryCode":81,"cosmosGeoPoint":82,"geoPoint":87,"contacts":88},"Universiteit Antwerpen, Department of Rehabilitation Sciences and Physiotherapy, Research group MOVANT","RECRUITING","Wilrijk","2610","Belgium","BE",{"type":83,"coordinates":84},"Point",[85,86],4.39513,51.16734,{"lat":86,"lon":85},[89],{"name":90,"role":71,"phone":91,"phoneExt":51,"email":73},"Ann Hallemans, PhD","032652912",{"type":93,"investigatorFullName":94,"investigatorTitle":95,"investigatorAffiliation":5,"oldNameTitle":51,"oldOrganization":51},"PRINCIPAL_INVESTIGATOR","Ann Hallemans","Associate Professor","100605362",false,"NCT07161531","Test-retest Reliability of sEMG to Measure Fatigue in Adolescents","Evaluating Test-Retest Reliability of Surface Electromyography (sEMG) in Measuring Fatigue in Adolescents Through Prolonged Activity","Inclusion Criteria:\n\n* engage in regular physical activity, such as sports or dance\n\nExclusion Criteria:\n\n* neuromuscular disorders\n* conditions that affect muscle function",true,"ALL","13 Years","19 Years",{"count":107,"type":108},27,"ESTIMATED","INTERVENTIONAL",[49],"This cross-sectional study aims to determine the test-retest reliability of surface electromyography (sEMG) outcomes in detecting levels of fatigue among healthy adolescents engaged in physical activities. It seeks to evaluate the consistency of sEMG parameters across two test sessions and correlate these measurements with both performance metrics and subjective fatigue assessments.\n\nParticipants will perform repetitive squatting until volitional exhaustion while their muscular activity is recorded. They will do so on two different test sessions with an interval of one week in between.",[113],"Healthy Adolescents","2025-09-03",{"date":116,"type":117},"2025-09-08","ACTUAL",{"date":119,"type":117},"2025-03-12",{"date":121,"type":108},"2026-06-30",{"name":5,"class":6},1]