Being that we are only with our clients 2-4 hours/weekly; we try not to spend that time on the treadmill. Although we encourage various forms of aerobic training that’s suitable to the clients needs and capabilities, we don’t use that time as part of the client/trainer relationship. Most clients however, will have to be coached for proper form and to learn how to use frequency, intensity, and time to accomplish their objectives. That time is covered initially and monitored to make sure the client is being compliant to their program and not just watching TV, etc. You also need to be aware that when your clients are doing their aerobic activity, they are your responsibility when in your studio! Have an emergency plan in place and know what to do in any situation. We have a defibrillator just in case and think it’s a great investment for all studios, gyms, and clubs.
Based on the two choices I suggest that the client should be monitored on the side.
It is near impossible to accurately monitor someone if you walk on the treadmill next to them. If they:
A) Need to have the speed changed
B) Need to have the incline changed
C) Need A & B
D) Fall or trip on the belt
you are not in a position to provide proper assistance.