[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"crossfit\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:crossfit":29},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,2,0,[8,42],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":16,"sex":17,"minAge":18,"maxAge":19,"enrollmentInfo":20,"targetDuration":4,"studyType":23,"phases":24,"briefSummary":26,"conditions":27,"keywords":4,"overallStatus":30,"whyStopped":4,"lastUpdateSubmitDate":31,"lastUpdatePostDateStruct":32,"startDateStruct":35,"completionDateStruct":36,"leadSponsor":38,"locationsCount":41},"100646189","effect-of-the-ultrasound-guided-percutaneous-neuromodulation-on-the-mean-velocity-in-crossfit-practitioners-100646189",false,"NCT07684534","Effect of the Ultrasound-guided Percutaneous Neuromodulation on the Mean Velocity in Crossfit Practitioners.","Effect of Ultrasound-guided Percutaneous Neuromodulation of the Transversus Abdominis on the Force-Velocity Profile During the Squat Performance in Crossfit Practitioners.","Inclusion Criteria:\n\n* Age between 18 and 60 years\n* At least 1 year of CrossFit training experience\n* Training frequency between 2 and 6 sessions per week\n\nExclusion Criteria:\n\n* Belonephobia (fear of needles)\n* Presence of cardiac conditions or implanted cardiac devices (e.g., pacemaker)\n* Pregnancy\n* Active oncological process\n* Skin conditions or lesions in the intervention area\n* Neurological or neurosensory disorders\n* Epilepsy\n* Current febrile condition\n* Recent use of antibiotics\n* Treatment with anticoagulant medication\n* Use of medications that may affect physical performance\n* Autoimmune diseases or use of immunosuppressive therapy\n* Active lumbar or abdominal pathology\n* Recent lumbar surgery or operations related to the intervention area\n* Active musculoskeletal injury or pain affecting squat technique or -performance\n* Undiagnosed pain affecting execution of the sporting movement.",true,"ALL","18 Years","60 Years",{"count":21,"type":22},42,"ESTIMATED","INTERVENTIONAL",[25],"NA","This randomized controlled blinded clinical trial aims to evaluate the effect of ultrasound-guided percutaneous neuromodulation (US-guided PNM) targeting the innervation of the transversus abdominis muscle on squat performance in CrossFit practitioners.\n\nThe transversus abdominis is a deep trunk muscle that contributes to lumbopelvic stability and force transmission during functional and athletic movements. Previous research suggests that improving neuromuscular activation of the trunk musculature may enhance movement efficiency and performance during resistance exercises. Ultrasound-guided percutaneous neuromodulation is a minimally invasive technique that applies electrical stimulation through a needle placed close to a peripheral nerve under ultrasound guidance, with the aim of modulating neuromuscular function.\n\nHealthy male and female CrossFit practitioners aged 18 to 60 years, with at least one year of training experience, will participate in the study. Participants will undergo an initial ultrasound assessment of transversus abdominis activation to classify and distribute the sample into groups. In a second session, mean velocity, mean propulsive velocity, and velocity loss during squat performance will be assessed using a linear velocity transducer. Participants will perform 3 sets of 2 repetitions of the squat exercise at 80% of their one-repetition maximum (1RM).\n\nFollowing baseline assessment, participants will be randomly assigned to either an experimental group receiving ultrasound-guided percutaneous neuromodulation of the iliohypogastric and ilioinguinal nerves, or a sham group receiving needle insertion without electrical stimulation. The intervention will consist of a TENS-type current applied at 10 Hz for 10 cycles of 10 seconds. Squat performance variables will be reassessed immediately after the intervention.\n\nThe purpose of this study is to determine whether US-guided percutaneous neuromodulation can acutely improve squat performance in trained CrossFit practitioners. The study hypothesis is that participants receiving active neuromodulation will demonstrate greater improvements in squat execution velocity and lower velocity loss compared with participants receiving the sham intervention.",[28,29],"Healthy Adult Participants","Crossfit","RECRUITING","2026-07-08",{"date":33,"type":34},"2026-07-10","ACTUAL",{"date":31,"type":34},{"date":37,"type":22},"2026-11-01",{"name":39,"class":40},"CEU San Pablo University","OTHER",1,{"id":43,"slug":44,"hasResults":11,"nctId":45,"briefTitle":46,"officialTitle":47,"acronym":4,"eligibilityCriteria":48,"healthyVolunteers":16,"sex":17,"minAge":49,"maxAge":50,"enrollmentInfo":51,"targetDuration":4,"studyType":23,"phases":53,"briefSummary":54,"conditions":55,"keywords":60,"overallStatus":68,"whyStopped":4,"lastUpdateSubmitDate":69,"lastUpdatePostDateStruct":70,"startDateStruct":72,"completionDateStruct":74,"leadSponsor":76,"locationsCount":41},"100635450","effects-of-8-week-crossfit-based-concurrent-training-on-fitness-body-composition-and-psychological-outcomes-in-schoolchildren-100635450","NCT07552844","Effects of 8-Week CrossFit-Based Concurrent Training on Fitness, Body Composition, and Psychological Outcomes in Schoolchildren","Effects of an 8-Week CrossFit-Based Concurrent Training Program on Physical Fitness, Body Composition, and Psychological Outcomes in Schoolchildren: A Randomized Controlled Trial Protocol","Inclusion Criteria:\n\n* Age: 7-11 years.\n* Students enrolled at CEIP Pablo García Baena (Córdoba).\n\nFor the experimental group:\n\n* Availability to attend the Triple XXX Box (Polígono Pedroches, C. los Alfareros, Parcel 119, 14014 Córdoba), where both assessments and training sessions will be conducted.\n* Availability to attend training sessions twice per week for the 8-week intervention period.\n* No participation in extracurricular physical activity prior to the start of the CrossFit program.\n\nFor the control group:\n\nNo participation in extracurricular physical activity. Informed consent signed by parents or legal guardians. No medical, psychological, or behavioral contraindications that would prevent participation in physical activity.\n\nExclusion Criteria:\n\n* Children with musculoskeletal injuries, diseases, or medical, psychological, or behavioral conditions that limit physical activity or interfere with the assessment of outcomes.\n* Inability or anticipated difficulty in regularly attending training sessions.\n* Refusal of parents or legal guardians to provide informed consent.","7 Years","11 Years",{"count":52,"type":22},30,[25],"This study examines the effects of an 8-week CrossFit-based concurrent training program in boys and girls aged 7 to 11 years, comparing an experimental group (n=15) with a control group (n=15). The aim is to assess changes in strength, cardiorespiratory fitness, body composition, and psychological variables such as anxiety, stress, and self-esteem, using field-based physical tests (CMJ, Course Navette, handgrip strength, etc.) and validated questionnaires. The study follows a randomized controlled trial design with pre- and post-intervention assessments. The experimental group will complete two weekly CrossFit sessions adapted for children, while the control group will maintain their usual routine without structured physical training. The hypothesis states that the intervention will significantly improve both physical performance and psychological well-being in the experimental group compared to the control group.",[56,29,57,58,59],"Children","Psychology, Child","Physical Fitness","Body Composition",[61,62,63,64,65,66,58,67],"children","stress","anxiety","exercise training","crossfit","self-esteem","body composition","NOT_YET_RECRUITING","2026-04-25",{"date":71,"type":34},"2026-04-30",{"date":73,"type":22},"2026-06",{"date":75,"type":22},"2026-07",{"name":77,"class":40},"Maimónides Biomedical Research Institute of Córdoba"]