Barrier-Step Action in Elite Futsal Goalkeepers

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.

NCT Number	NCT07539246
Lead Sponsor	Federal University of Vicosa
Conditions	Biomechanical Data, Sport Performance, Professional Overhead Athletes, Futsal
Enrollment	3 participants
Start Date	2021-09-07
Primary Completion	2021-09-07 (estimated)
Study Completion	2021-09-07 (estimated)
Updated on ClinicalTrials.gov	2026-04-21