What is meant by the terms manager as coach (MAC)?

What is meant by the terms manager as coach (MAC)?

Most of us are familiar with the role of a manager and a leader. We also know the functions each is expected to perform. However, there is a trend in the UK that puts managers in a different role.

This trend is manager as coach (MAC) and will be the focus of this assignment. Before beginning the tasks, please read the following article:

Ladyshewsky, R. K. (2010). The manager as coach as a driver of organizational development. Leadership & Organization Development Journal, 31(4), 292-306.

What is meant by the terms manager as coach (MAC)?
Is this role more appropriate for a leader or manager?
What are the advantages of it? What are the disadvantages?
How does it fit with the other roles of a manager and leader?
Would this be an effective tool in a healthcare setting? Why or why not?