Isolation movements refer to specific exercises that focus on targeting and working a particular muscle or muscle group in your body, without involving multiple muscles simultaneously. Full definition
A workout routine based around compound exercises is much quicker than one that requires you to do isolation movements for each muscle group. (fitnesscrest.com)
Question: Why do you say beginners shouldn't do isolation movements? (kingofthegym.com)
This can be done with isolation movements and high rep sets to accumulate volume on the muscle. (simplyshredded.com)