There are two theories on the subject on the agenda of the muscle groups in training, based on the same criteria: arm muscles act as auxiliaries of the large muscle groups of the trunk. I.e. in chest movements also will help us, for example, the triceps, former head of the deltoid and forearm.
Lfirst one makes reference to that is interesting first exhausting small muscles (auxiliary) to be able to isolate the most large. On the other hand, many specialists, on the basis of the existing precepts on functional training, they advocate first using large groups, than if it were exhausted before children, no longer can perform correctly the sequence of movements of the first.
In which there is completely a criterion unit is in the fact that stabilizing muscles (abdominals, trasverso, lumbar), should always be worked in last place for best performance during the rest of the session.
Moreover, it is effective to apply the principle of agonista-antagonista muscle. I.e., perform a move involving one or several muscles then proceed to movements that involve muscles that perform their function “ counter ”, in what is known as Superserie. Ex.: Pecho-Espalda, Biceps-triceps. This results in a considerable improvement in the rate of recovery of the first muscle.