The term that describes the worker who assists the professional would be the?

Assistant

Explanation:

"Assistant" is the word used to describe the worker who assists a particular professional to do his job in the most efficient way possible.

Assistants are very important and necessary professionals in all sectors of work and production, for this reason, there are administrative assistants, physician assistants, dental assistants, assistant professors, mechanic assistants and many others. In any area, the assistant will take care of part of the work, being able to streamline all processes, promoting better customer service and results.

which ever one is showing doing the same exercise in time intervals such as 30 seconds or a minute several times.