[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100616795":3},{"organization":4,"armGroups":7,"interventions":26,"overallOfficials":33,"centralContacts":34,"locations":40,"responsibleParty":57,"collaborators":33,"id":61,"slug":62,"hasResults":63,"nctId":64,"briefTitle":65,"officialTitle":66,"acronym":67,"eligibilityCriteria":68,"healthyVolunteers":69,"sex":70,"minAge":71,"maxAge":72,"enrollmentInfo":73,"targetDuration":33,"studyType":76,"phases":77,"briefSummary":79,"conditions":80,"keywords":82,"overallStatus":87,"whyStopped":33,"lastUpdateSubmitDate":88,"lastUpdatePostDateStruct":89,"startDateStruct":92,"completionDateStruct":94,"leadSponsor":96,"locationsCount":97},{"fullName":5,"class":6},"Universidad Católica del Maule","OTHER",[8,14,18,22],{"label":9,"type":10,"description":11,"interventionNames":12},"Conventional warm-up condition","EXPERIMENTAL","The CC performed a traditional soccer warm-up for 10 minutes, consisting of 4 minutes of jogging in different directions at moderate to vigorous intensities, measured using the 10-point perceived exertion scale (RPE) scale, starting between 3 and 5 points and ending between 6 and 8 points, followed by movements performed in matches (jumps, ball kicks, changes of direction) distributed in three sets of 60 seconds each with a 60-second rest between sets. This condition did not include flexibility exercises.",[13],"Other: conventional warm-up regarding to stretching warm-up",{"label":15,"type":10,"description":16,"interventionNames":17},"Static stretching condition","The SSC consisted of a warm-up with static stretching for 10 minutes. Four stretching exercises were performed, one for each lower body muscle group (quadriceps, glutes, hamstrings, and triceps sural), distributed in two sets of 30 seconds each with a 45-second rest per exercise, performing progressive increases in joint range of motion. The intensity started between 3 and 5 points, ending between 6 and 8 points on the RPE scale",[13],{"label":19,"type":10,"description":20,"interventionNames":21},"Dynamic stretching condition","The DSC consisted of a 10-min warm-up with dynamic stretching. Four stretching exercises were performed, one for each lower body muscle group (quadriceps, gluteus, hamstrings and triceps surae) distributed in two series of 30 s each with a rest of 45 s per exercise, dynamically executing oscillatory stretching movements with progressive increases in speed. The intensity started between 3 and 5 points, ending between 6 and 8 points of RPE.",[13],{"label":23,"type":10,"description":24,"interventionNames":25},"Ballistic stretching condition","The BSC consisted of a warm-up with ballistic stretching for 10 min. Four stretching exercises were performed, one for each muscle group of the lower body (quadriceps, gluteus, hamstrings and triceps surae) distributed in two series of 30 s each with a rest of 45 s per exercise in which an elongated position was maintained for 5 s then 5 s of oscillation with progressive increments until completing the 30 s of each series. The intensity started between 3 and 5 points, ending between 6 and 8 points of RPE.",[13],[27],{"type":6,"name":28,"description":29,"armGroupLabels":30,"otherNames":31},"conventional warm-up regarding to stretching warm-up","The warm-up protocol was based on the guidelines of a previous study conducted on adolescent players in Chile. The CC performed a traditional soccer warm-up for 10 minutes, consisting of 4 minutes of jogging in different directions at moderate to vigorous intensities, measured using the 10-point perceived exertion scale (RPE) scale, starting between 3 and 5 points and ending between 6 and 8 points, followed by movements performed in matches (jumps, ball kicks, changes of direction) distributed in three sets of 60 seconds each with a 60-second rest between sets. This condition did not include flexibility exercises.\n\nThe SSC consisted of a warm-up with static stretching for 10 minutes. Four stretching exercises were performed, one for each lower body muscle group (quadriceps, glutes, hamstrings, and triceps surae), distributed in two sets of 30 seconds each with a 45-second rest per exercise, performing progressive increases in joint range of",[23,9,19,15],[32],"usual care",null,[35],{"name":36,"role":37,"phone":38,"phoneExt":33,"email":39},"Pablo Valdes-Badilla, Doctor","CONTACT","+56 9 7125 8824","valdesbadilla@gmail.com",[41],{"facility":5,"status":33,"city":42,"state":42,"zip":43,"country":44,"countryCode":45,"cosmosGeoPoint":46,"geoPoint":51,"contacts":52},"Talca","3465548","Chile","CL",{"type":47,"coordinates":48},"Point",[49,50],-71.64974,-35.4232,{"lat":50,"lon":49},[53],{"name":54,"role":37,"phone":55,"phoneExt":33,"email":56},"Pablo Valdes, Doctor","953646566","e.maximiliano@live.cl",{"type":58,"investigatorFullName":59,"investigatorTitle":60,"investigatorAffiliation":5,"oldNameTitle":33,"oldOrganization":33},"PRINCIPAL_INVESTIGATOR","Pablo Valdés-Badilla","PhD. in Physical activities science","100616795","conventional-warm-up-on-physical-performance-in-children-soccer-players-100616795",false,"NCT07310251","Conventional Warm-up on Physical Performance in Children Soccer Players","Effect of Conventional Warm-up Regarding to Stretching Warm-up on Physical Performance in Children Soccer Players","RCT","Inclusion Criteria:\n\n* Male children aged 8 - 13 years, enrolled in a soccer school affiliated with amateur clubs in Chile.\n* Regular participation in organized soccer training (≥2 sessions per week) for at least six months prior to the study.\n* Absence of musculoskeletal or neurological injuries that could limit the ability to perform the warm-up or physical performance assessments.\n* Availability of appropriate sports clothing and footwear for testing sessions.\n* No concurrent participation in other soccer schools or competitive teams during the study period.\n* No official matches or competitions scheduled on the same days as the experimental sessions.\n* Signed assent and informed consent provided by the participant and a parent or legal guardian, respectively.\n\nExclusion Criteria:\n\n* Sustain an injury or illness during the study period that prevents participation in testing.\n* Fail to complete all four experimental conditions or physical assessments.\n* Demonstrate non-compliance with the warm-up instructions or assessment procedures.",true,"MALE","8 Years","13 Years",{"count":74,"type":75},20,"ESTIMATED","INTERVENTIONAL",[78],"NA","Considering the importance of an optimal warm-up to enhance performance in key soccer-related variables such as jump height, sprint speed, and ball kicking velocity, most available evidence to date has focused on youth and adult players, with limited studies conducted in children. Therefore, this study aimed to assess and compare the effects of a conventional warm-up and warm-ups including static stretching condition (SSC), dynamic stretching condition (DSC), and ball-specific condition (BSC) on jump performance countermovement jump (CMJ), squat jump (SJ), and drop jump (DJ) as well as on curve sprint speed, the Illinois change of direction test (ICODT), and ball kicking speed in male child soccer players. We hypothesized that the dynamic stretching warm-up would produce superior performance across most variables compared with the other conditions, due to its potential benefits for neuromuscular activation and optimization of the stretch shortening cycle.",[81],"Children Soccer Players",[83,84,85,86],"Child","soccer","sports","players","NOT_YET_RECRUITING","2025-12-15",{"date":90,"type":91},"2025-12-30","ACTUAL",{"date":93,"type":75},"2026-02-26",{"date":95,"type":75},"2026-08-20",{"name":5,"class":6},1]