Youth and High School Athletics- The issue I see running though young athletes is the over emphasis on specificity and underdevelopment of general motor development and base of strength building. The specificity occurs in multiple avenues. First, athletes are just competing year-round much more than in decades pervious. Gameplay is by definition a high intensity and more specifically a high velocity activity. When you combine high intensity movement with underdeveloped motor control, movement quality, and strength, injury becomes not if but when.
Nothing combats soft tissue and joint injury like maximal strength displayed through quality movement patterns. Strong glutes, hips, hamstrings, and core stabilizers protect surrounding joints like the knees and lumbar joints during high speed sprinting, jumping, and rotation.