Compound movement uses multiple muscles together like notes to a song. Together they can perform certain task. Also using multiple muscles means burning more calories and getting tired faster than with isolation movements. Isolation movement, also known as concentration movement are movements that require the use of only one muscle at a time.
2. What is the value of a well-executed isolation exercise versus a poorly done compound exercise?
With a well-executed isolation exercise you can be sure that that muscle has reached its peak performance. But you cannot separate the muscles during a compound exercise. If the exercise was performed