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How do you know when a thrower is ready to move up to a heavier implement?

Being strong enough to lift the next implement and being ready to throw it are two different questions, and coaches who only ask the first one get it wrong.

A thrower adds strength in the weight room all winter, and by spring the coach is weighing whether to move them up to the next implement. Get the timing wrong either way and it costs something: too early and technique falls apart under a weight the athlete can't yet control, too late and the athlete plateaus on a weight they have already outgrown.

Strength is not the only question

A thrower can be strong enough to move an implement and still not be ready to move up with it. The heavier implement does not just weigh more, it moves differently in the hand and through the release, and a technique that holds at the lighter weight can come apart entirely at the heavier one. The real question is not whether they can lift it, it is whether their technique still works when they throw it.

What to check before making the jump

• Have them throw the next implement up in practice, well before a meet, and watch whether the same technique holds or whether they start muscling it with the arm.
• Watch whether the legs still lead the throw. A thrower who starts throwing with the upper body first once the implement gets heavier has not actually built the strength the new weight needs, only enough to survive it.
• Check whether their best throws with the heavier implement still come from full-effort technique, rather than from strength covering for a shortcut.

What the Film Room can actually show you here

The throws setting reports release angle from the hand's fastest point of travel, and whether the trunk stays tall over the drive leg through the throw. Film the same athlete with the current implement and the heavier one on the same day. If the release angle flattens and the trunk starts collapsing forward with the heavier implement, the technique has not transferred yet, whatever the athlete can lift in the weight room.

A single camera can tell you whether the mechanics held when the implement got heavier. It cannot tell you whether the athlete's joints and tendons are ready for the extra load over a full season of throws, which is a medical and training-load question, not a video one.

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