Clinical Research Directory

Load-Matched Unilateral Versus Bilateral Squat Training in Elite Youth Futsal Players

This randomised controlled trial compared the effects of two load-matched squat training modalities on physical performance in elite youth futsal players. Seventeen players from the Antioqueña regional futsal squad in Colombia were randomly allocated to either a unilateral squat training group or a bilateral squat training group. Both groups completed a six-week velocity-based training programme, with two supervised sessions per week, while continuing their usual futsal training. Training intensity was prescribed using mean propulsive velocity targets across three two-week blocks. The main outcomes were countermovement jump height, single-leg countermovement jump height for the right and left limbs, 10-metre sprint time, and estimated squat one-repetition maximum. Secondary descriptive data included 20-metre sprint time. The study aimed to determine whether unilateral squat training produced superior adaptations compared with bilateral squat training when training load was objectively standardised.

Horizontal Plyometric Training and Sprint Mechanics in Early-Adolescent Track-and-Field Athletes

This field-based exploratory pre-post study examined the effects of a six-week horizontally oriented plyometric training program on sprint performance and sprint-related temporal-kinematic outcomes in early-adolescent male track-and-field athletes. Participants completed 12 supervised plyometric training sessions integrated into their regular athletics practice. Outcomes were assessed at baseline and after the intervention using field-based sprint testing, video-derived temporal-kinematic analysis, and horizontal jump performance measures. The study was conducted in a low-resource community sport setting in Antioquia, Colombia. The intervention was designed according to the participants' age, training background, and usual sport practice demands, with progressive exercise exposure, supervision, adequate recovery, and safety monitoring throughout the training period.