[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100636730":3},{"organization":4,"outcomesModule":7,"designInfo":27,"detailedDescription":34,"studyPopulation":26,"armGroups":35,"interventions":48,"overallOfficials":58,"centralContacts":67,"locations":72,"responsibleParty":87,"collaborators":26,"id":90,"slug":26,"hasResults":91,"nctId":92,"briefTitle":93,"officialTitle":94,"acronym":26,"eligibilityCriteria":95,"healthyVolunteers":91,"sex":96,"minAge":97,"maxAge":98,"enrollmentInfo":99,"targetDuration":26,"studyType":102,"phases":103,"briefSummary":105,"conditions":106,"keywords":108,"overallStatus":110,"whyStopped":26,"lastUpdateSubmitDate":111,"lastUpdatePostDateStruct":112,"startDateStruct":115,"completionDateStruct":117,"leadSponsor":119,"locationsCount":120},{"fullName":5,"class":6},"Cairo University","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":13,"otherOutcomes":26},[9],{"measure":10,"description":11,"timeFrame":12},"Pain Intensity","Pain intensity in chronic hamstring strain will be assessed using the Visual Analog Scale (VAS), a 10-cm scale ranging from 0 (no pain) to 10 (worst imaginable pain). Measurements will be taken at baseline and after completion of the intervention period to evaluate changes in pain perception.","Baseline (pre-intervention) and after 6 weeks of treatment",[14,17,20,23],{"measure":15,"description":16,"timeFrame":12},"Functional Performance","Functional outcomes will be assessed using the Lower Extremity Functional Scale (LEFS) to evaluate the impact of intervention on daily and sports-related activities.",{"measure":18,"description":19,"timeFrame":12},"Hamstring Muscle Strength","Hamstring muscle strength will be measured using a handheld dynamometer during maximal isometric contraction.",{"measure":21,"description":22,"timeFrame":12},"Hamstring Flexibility","Hamstring flexibility will be assessed using the popliteal angle test with a universal goniometer.",{"measure":24,"description":25,"timeFrame":12},"Kicking Speed","Kicking speed will be measured using a radar gun to assess football-specific performance.",null,{"allocation":28,"interventionModel":29,"interventionModelDescription":30,"primaryPurpose":31,"observationalModel":26,"timePerspective":26,"maskingInfo":32},"RANDOMIZED","PARALLEL","This is a randomized, parallel-group interventional study. Participants will be allocated into two groups: an experimental group receiving dry needling combined with conventional physiotherapy, and a control group receiving conventional physiotherapy alone.","TREATMENT",{"masking":33,"maskingDescription":26,"whoMasked":26},"NONE","Chronic hamstring strain (CHS) is a common musculoskeletal condition among athletes, particularly in sports involving high-speed running and sudden changes in direction. It is characterized by persistent or recurrent symptoms lasting more than three months and is often associated with reduced muscle flexibility, decreased performance, and an increased risk of reinjury.\n\nDry needling (DN) has emerged as a therapeutic intervention targeting myofascial trigger points to reduce pain, improve muscle function, and restore neuromuscular control. It is believed to act through both mechanical and neurophysiological mechanisms, including reduction of muscle tension and modulation of pain pathways.\n\nThis study aims to investigate the effectiveness of dry needling as an adjunct to conventional physiotherapy in athletes with chronic hamstring strain. Participants will be randomly assigned into two groups. The experimental group will receive dry needling combined with a structured physiotherapy program, while the control group will receive the same physiotherapy program without dry needling.\n\nThe physiotherapy program will include stretching exercises, strengthening exercises with an emphasis on eccentric loading, and functional training. Dry needling will be applied to identified trigger points in the hamstring muscles using standard clinical techniques.\n\nOutcome measures will include pain intensity, hamstring flexibility, and functional performance. Assessments will be conducted before and after the intervention period.\n\nThe results of this study are expected to provide evidence regarding the added value of dry needling in improving rehabilitation outcomes for athletes with chronic hamstring strain.",[36,42],{"label":37,"type":38,"description":39,"interventionNames":40},"Control Group (A)","ACTIVE_COMPARATOR","Participants will receive only the standard rehabilitation program without dry needling.",[41],"Procedure: Standard Rehabilitation Program",{"label":43,"type":44,"description":45,"interventionNames":46},"Intervention Group (B)","EXPERIMENTAL","Participants will receive dry needling treatment in addition to a standard rehabilitation program for chronic hamstring strain",[47,41],"Procedure: Dry Needling",[49,54],{"type":50,"name":51,"description":52,"armGroupLabels":53,"otherNames":26},"PROCEDURE","Dry Needling","Participants will receive dry needling treatment applied to active myofascial trigger points in the hamstring muscles (biceps femoris, semitendinosus, and semimembranosus). Sterile filiform needles will be inserted into identified trigger points to elicit local twitch responses and reduce muscle pain and tightness. Treatment will be performed in addition to a standardized rehabilitation program including stretching and strengthening exercises for the hamstring muscle group. Sessions will be administered over the study period according to a predefined treatment schedule.",[43],{"type":50,"name":55,"description":56,"armGroupLabels":57,"otherNames":26},"Standard Rehabilitation Program","Participants will receive a standardized rehabilitation program including stretching and eccentric strengthening exercises for hamstring muscles without dry needling.",[37,43],[59,62,65],{"name":60,"affiliation":5,"role":61},"Amr Anas, BSc","PRINCIPAL_INVESTIGATOR",{"name":63,"affiliation":5,"role":64},"Ebtessam Gomaa, PhD","STUDY_DIRECTOR",{"name":66,"affiliation":5,"role":64},"Marihan Makary",[68],{"name":60,"role":69,"phone":70,"phoneExt":26,"email":71},"CONTACT","+201023924004","amr.anas109@gmail.com",[73],{"facility":74,"status":26,"city":75,"state":76,"zip":26,"country":77,"countryCode":78,"cosmosGeoPoint":79,"geoPoint":84,"contacts":85},"Abu Qir General Hospital","Alexandria","Alexandria Governorate","Egypt","EG",{"type":80,"coordinates":81},"Point",[82,83],29.91582,31.20176,{"lat":83,"lon":82},[86],{"name":60,"role":69,"phone":70,"phoneExt":26,"email":71},{"type":61,"investigatorFullName":88,"investigatorTitle":89,"investigatorAffiliation":5,"oldNameTitle":26,"oldOrganization":26},"Amr Mostafa Kamal Anas","Master's Student, Faculty of Physical Therapy, Cairo University","100636730",false,"NCT07569484","Effectiveness of Dry Needling in Athletes With Chronic Hamstring Strain","Effectiveness of Dry Needling on Athletes With Chronic Hamstring Strain","Inclusion Criteria:\n\n* Male football players aged 18 to 35 years.\n* Diagnosed with chronic hamstring strain (CHS) confirmed by ultrasonography.\n* Injury duration of more than 3 months.\n* Classified as Grade I or Grade II hamstring strain.\n* Currently participating in the competitive phase of football.\n* Body Mass Index (BMI) between 21-25 kg\u002Fm².\n\nExclusion Criteria:\n\n* Previous exposure to dry needling therapy.\n* Presence of any other current lower limb injuries.\n* Participation in another hamstring rehabilitation program.\n* Active skin infection at or near the treatment area.\n* Bleeding disorders or use of anticoagulant medications.\n* Severe needle phobia or psychological intolerance to needling.\n* Presence of neuromuscular disorders (e.g., muscular dystrophy or peripheral neuropathy).","MALE","18 Years","35 Years",{"count":100,"type":101},38,"ESTIMATED","INTERVENTIONAL",[104],"NA","This study aims to evaluate the effectiveness of dry needling in reducing pain and improving functional outcomes in athletes with chronic hamstring strain. Chronic hamstring injuries are common among athletes and often lead to persistent pain, reduced performance, and limitations in daily and sports activities.\n\nDry needling is a therapeutic technique used to target myofascial trigger points and relieve muscle tension. This study will compare the effects of dry needling with conventional physiotherapy interventions to determine its role in managing chronic hamstring strain.\n\nParticipants will be athletes diagnosed with chronic hamstring strain. Outcomes will include pain intensity, muscle flexibility, and functional performance. The results of this study may help improve rehabilitation strategies and provide evidence for the use of dry needling in sports injuries.",[107],"Hamstring Muscle Strain",[51,109],"Hamstring Strain","NOT_YET_RECRUITING","2026-04-29",{"date":113,"type":114},"2026-05-06","ACTUAL",{"date":116,"type":101},"2026-05-01",{"date":118,"type":101},"2027-04-30",{"name":5,"class":6},1]