Inclusion of Game-Based Stimulus During Flywheel Resistance Training Positively Influences Physical Performance in Handball Players.

Handball is a body-contact Olympic ball sport that is characterized by fast-paced defensive and offensive actions. Players must coordinate explosive movements (e.g. changing of direction) and handball-specific skills (e.g. passing). Maximizing performance requires a systematic approach to training that includes physical, psychological, technical, and tactical preparation. The aim of this study is to determine the effects of movement-based (MOV; unspecific sport stimulus) or game-based (GAM; sport-specific stimulus) flywheel resistance training intervention in highly trained youth handball players. Twenty-five highly trained youth male handball players completed two sessions per week of flywheel resistance training (MOV,  = 12; GAM,  = 13) over the 7-week intervention period. Change-of-direction tests (180º change-of-direction speed test of both legs and test) and handball-throwing test were conducted before and after the intervention. Both groups significantly improved -cut, and 180º Change-of-direction speed test performance ( < .05;  = 0.79-2.05). Notwithstanding, the GAM group demonstrated greater improvements in -cut and COD180 compared with the MOV group ( < .05) with small effect. Handball throwing speed performance remained unchanged independently of training condition ( > .05). These findings provide further support for the training principle of "specificity" and highlight the importance of including a game-based training stimulus during resistance training. This is a key consideration for coaches wanting to enhance physical performance in youth handball players.