Physics

Internal medicine

Sprint

High-intensity interval training

Mathematics

Anthropometry

Surgery

Physical fitness

Physical therapy

Randomized controlled trial

Interval training

Vertical jump

Body fat percentage

Jump

Quantum mechanics

Medicine

Physical medicine and rehabilitation

PeerJ

The aim of this study was two-fold: (i) analyze the within-group physical fitness adaptations promoted by a detraining period (4 weeks) followed by an intervention period (4 weeks) using small-sided games (SSGs) or running-based high intensity interval training (HIIT); and (ii) analyze the between-group differences aiming to identify the effectiveness of each training intervention on the physical fitness of youth male soccer players.

Can high-intensity interval training and small-sided games be effective for improving physical fitness after detraining? A parallel study design in youth male soccer players