Observational Case Series of Futsal Goalkeeper Barrier-Step Movement
Summary
NIH ClinicalTrials.gov registered observational study NCT07539246 examining barrier-step movement in three elite male futsal goalkeepers. The study used high-speed video analysis to characterize movement phases and body angles during standardized low ball stimulus responses. No compliance obligations or regulatory requirements are created by this registration.
What changed
This document registers a clinical observational study examining how elite futsal goalkeepers execute the barrier-step defensive movement. Three professional goalkeepers performed trials under standardized indoor conditions with 240 fps video analysis. The study segmented movement into three phases: initiation-propulsion, lateral transfer, and terminal support-stabilization. No regulatory obligations or compliance requirements arise from this study registration.
Affected parties include sports science researchers, biomechanics investigators, and clinical trial registries. Healthcare institutions conducting sports medicine research should note this represents routine clinical research registration activity under NIH oversight.
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Apr 20, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Barrier-Step Action in Elite Futsal Goalkeepers
Observational NCT07539246 Kind: OBSERVATIONAL Apr 20, 2026
Abstract
This observational case series examined the barrier-step action in elite futsal goalkeepers. The aim was to describe how this goalkeeper-specific defensive movement was organised in time and how selected body angles were configured during execution. Three male professional futsal goalkeepers with international experience each performed three valid dominant-side trials under standardised indoor conditions. The task involved responding to a standardised low ball stimulus delivered by the coach from the penalty mark at a distance of 5 m.
Video data were recorded using a GoPro Hero 10 camera operating at 240 frames per second and analysed frame by frame in Kinovea. The movement was segmented into three operational intervals: initiation-propulsion, lateral transfer, and terminal support-stabilisation. Projected shoulder, hip, knee, and ankle angles were extracted at two analytically defined instants: the end of Interval 1 and the blocking configuration reached during Interval 2. Descriptive statistics were used to characterise between-goalkeeper variation and within-goalkeeper consistency in the barrier-step action.
Conditions: Biomechanical Data, Sport Performance, Professional Overhead Athletes, Futsal
Interventions: Standardised barrier-step assessment task
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