Some experiments are looking at the effect of exercises on CSA in different regions of the same muscle.

If the muscle is stimulated by the CNS activating series of sarcomeres, then I would expect the fibre to react uniformly.

Every action has an equal and opposite reaction, and in a sense the stress on the muscle is caused by the muscle itself.

If adaptation can be experienced in different regions of the muscle in series it suggests parts of the fibre are contracting more than other parts, which to me indicates decentralization of co-ordination, unless the muscle is more innervation to the CNS than I realise.

What is the thinking on this?

Am I missing something?