@coachphilswat explains his method for introducing shape changes in saltos. Thank you to his demonstrator Amelia!

I find when saltos are first introduced to gymnasts (particularly forward ones), their natural instinct is to tuck in as quickly as possible.
This can result in the gymnast rotating very fast and low to the floor, or if tucking immediately, hardly rotating at all.

I use this teaching method to help young gymnasts understand the effects of the ‘set’ and the ‘tuck’ action, and as a very basic introduction to them understanding biomechanics. It breaks these points down very clearly and is fun for them too!

If the gymnast keeps their legs straight in the chair spin, it will spin slowly, but usually the whole way round (much like how they will rotate slower in a straight salto).

If the gymnast tucks too early, it kills their rotation and they cannot make the full circle.

When the gymnast first sets and extends before tucking and shortening their body, their rotation speeds up as the moment of inertia is decreased.

Translate this knowledge to their tumbles, and they may be more willing to set before wrapping in!

Hope this helps you and your athletes create their Best Darn Gymnastics!