Ignite Creation Date:
2026-03-26 @ 3:14 PM
Ignite Modification Date:
2026-03-31 @ 2:50 AM
Study NCT ID:
NCT07442695
Status:
COMPLETED
Last Update Posted:
2026-03-02
First Post:
2026-02-23
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
2D Key-Event Joint Angles Across Phases of the Badminton Overhead Smash in Elite Colombian Players
Sponsor:
Organization:
Raw JSON
{'hasResults': False, 'derivedSection': {'miscInfoModule': {'versionHolder': '2026-03-25'}}, 'protocolSection': {'designModule': {'studyType': 'OBSERVATIONAL', 'designInfo': {'timePerspective': 'CROSS_SECTIONAL', 'observationalModel': 'CASE_ONLY'}, 'enrollmentInfo': {'type': 'ACTUAL', 'count': 4}, 'patientRegistry': False}, 'statusModule': {'overallStatus': 'COMPLETED', 'startDateStruct': {'date': '2025-02-12', 'type': 'ACTUAL'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2026-02', 'completionDateStruct': {'date': '2025-02-13', 'type': 'ACTUAL'}, 'lastUpdateSubmitDate': '2026-02-26', 'studyFirstSubmitDate': '2026-02-23', 'studyFirstSubmitQcDate': '2026-02-26', 'lastUpdatePostDateStruct': {'date': '2026-03-02', 'type': 'ACTUAL'}, 'studyFirstPostDateStruct': {'date': '2026-03-02', 'type': 'ACTUAL'}, 'primaryCompletionDateStruct': {'date': '2025-02-13', 'type': 'ACTUAL'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': '2D sagittal-plane joint angles at key events during the smash (knee, hip, shoulder, elbow)', 'timeFrame': 'Baseline (Visit 1; up to 30 minutes)', 'description': 'Internal joint angles (degrees) for the knee, hip, shoulder, and elbow computed using three-point (planar) definitions at five pre-defined key-event frames (F1-F5) spanning the smash phases. Angles will be extracted from lateral high-speed video after landmark digitisation in Kinovea using pre-specified anatomical landmarks and segment definitions. Data will be reported as mean (SD) for each joint and key-event frame; larger values indicate more extended joint configurations.'}], 'secondaryOutcomes': [{'measure': 'Between-participant variability (SD and CV%) of 2D sagittal-plane joint angles by key-event frame and joint', 'timeFrame': 'Baseline (Visit 1; up to 30 minutes)', 'description': 'Between-participant dispersion of the 2D sagittal-plane joint angles (knee, hip, shoulder, elbow) at each pre-defined key-event frame (F1-F5). Variability will be summarized as (i) standard deviation (SD, degrees) and (ii) coefficient of variation (CV%, 100×SD/mean) across participants for each joint × key-event frame. Variability will be reported for the overall sample and, if applicable, stratified by sex as a pre-specified exploratory analysis.'}]}, 'oversightModule': {'oversightHasDmc': False, 'isFdaRegulatedDrug': False, 'isFdaRegulatedDevice': False}, 'conditionsModule': {'keywords': ['badminton', 'overhead smash', '2D video analysis', 'joint angles', 'technique variability'], 'conditions': ['Sports Performance', 'Biomechanics', 'Video Information']}, 'descriptionModule': {'briefSummary': 'Phase-based descriptions of the badminton overhead smash can support coach-relevant feedback when laboratory motion capture is impractical. This cross-sectional exploratory case series characterises dominant-side, two-dimensional key-event joint-angle configurations (knee, hip, shoulder, elbow) across five phases (preparation, start, acceleration, impact, termination) in elite Colombian players from the Antioquia Badminton League. Athletes performed three maximal-effort smashes; one trial per athlete was selected for analysis using pre-defined visibility criteria, and one key-event frame per phase was digitised in Kinovea. Outcomes are descriptive phase-specific angle values and between-athlete dispersion metrics. The study is retrospectively registered for transparency.', 'detailedDescription': 'Badminton overhead smash performance depends on coordinated whole-body contributions and is often judged qualitatively in applied settings. This study provides a field-based, minimal-equipment description of dominant-side planar joint-angle configurations across five technical phases of the overhead smash using a single lateral high-speed camera. Five elite athletes (men n=4; woman n=1) from the Antioquia Badminton League were recorded at 240 frames·s-¹ during maximal-effort smashes. Phases were defined as preparation (F1), start (F2), acceleration (F3), impact (F4), and termination (F5), with one key-event frame selected per phase. Knee, hip, shoulder, and elbow internal angles were extracted via three-point definitions in Kinovea. Data are reported descriptively (male subgroup as mean±SD and CV%; female case descriptively). The intention is to offer coach-interpretable phase references and to identify phases with higher inter-individual dispersion.'}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT', 'OLDER_ADULT'], 'minimumAge': '18 Years', 'samplingMethod': 'NON_PROBABILITY_SAMPLE', 'studyPopulation': 'High-performance adult badminton players from the Antioquia Badminton League (Colombia) with extensive competitive experience, assessed in a single session to describe 2D phase-based overhead smash joint-angle configurations.', 'eligibilityCriteria': 'Inclusion Criteria:\n\n* 5 years of organised badminton experience\n* Current Antioquia Badminton League affiliation\n* Competitive participation in ≥5 federated tournaments\n* Previous selection to a representative team at least at national level\n* Able to execute maximal-effort overhead smashes on the testing day\n\nExclusion Criteria:\n\n* Pain or musculoskeletal complaints affecting upper limb, trunk, or lower limb on the testing day\n* Any condition preventing maximal-effort overhead smashes'}, 'identificationModule': {'nctId': 'NCT07442695', 'acronym': 'BAD-2D-SMASH', 'briefTitle': '2D Key-Event Joint Angles Across Phases of the Badminton Overhead Smash in Elite Colombian Players', 'organization': {'class': 'OTHER', 'fullName': 'Federal University of Vicosa'}, 'officialTitle': 'Preliminary Dominant-side 2D Key-event Joint-angle Descriptors Across Five Phases of the Badminton Overhead Smash in Elite Colombian Players: a Cross-sectional Exploratory Case Series', 'orgStudyIdInfo': {'id': 'Badminton-TdeA'}}, 'armsInterventionsModule': {'armGroups': [{'label': 'Elite badminton players (Antioquia)', 'description': 'Elite badminton athletes from the Antioquia Badminton League (Colombia), aged ≥18 years, with \\>5 years of organised experience, competitive participation in ≥5 federated tournaments, and previous selection to at least national representative level. Participants completed a single testing session involving three maximal-effort overhead smashes recorded with a single lateral high-speed camera for 2D phase-based joint-angle extraction; no interventions were assigned.'}]}, 'contactsLocationsModule': {'locations': [{'zip': '054080', 'city': 'Medellín', 'state': 'Antioquia', 'country': 'Colombia', 'facility': 'Tecnológico de Antioquia', 'geoPoint': {'lat': 6.245, 'lon': -75.57151}}]}, 'ipdSharingStatementModule': {'ipdSharing': 'NO', 'description': 'Individual participant data will not be shared publicly because the sample is very small and drawn from an identifiable elite sports environment, meaning that de-identified records could still be re-identified when combined with contextual information. In addition, the source materials include video-derived measures, and participant consent was obtained for analysis and publication of aggregated results rather than unrestricted public release of participant-level data. Summary statistics and methodological details are reported in the publication; additional details may be considered on a case-by-case basis under a data-use agreement and ethics constraints.'}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'Federal University of Vicosa', 'class': 'OTHER'}, 'responsibleParty': {'type': 'PRINCIPAL_INVESTIGATOR', 'investigatorTitle': 'Principal investigator', 'investigatorFullName': 'Édison Andrés Pérez Bedoya', 'investigatorAffiliation': 'Federal University of Vicosa'}}}}