Im very Curious about this topic as i notice that basicly every athlete does some sort of weighted exercises with the majority doing this in weight rooms. Having noticed this it seems like the exercises done in a weight room must have a good impact in running (obviously it does) but every since i was a kid i've heard so many athletes/ coaches say that Event Specific Exercises are most beneficial as to improve in something one needs to practice, to improve accuracy of a pitch/throw a pitcher would spend time throwin a ball at a target and reinacting what is required in a game by him. To improve ones technique in doing something then enough time must be spent in practicing the new style so that it works its way into their normal technique and because natural. My queery is if sports specific exercises are so beneficial for improvments, does this mean it would be better to proform exercises that replicate the running action required with additional weight (ankle, wrists, chest weights etc) provide more benefits from them than the exercises completed in a weight room.
Weight room includes: Squats, deadlifts etc
Running exercises: bounds, depth jumps, weighted repititions
All imputs on this topic would be greatly appreciated- whether it be scientific studies on this topic or just your opinion, im interesting in hearing everyones different point of views. If you dont understand the question being asked i will explain it more