Originally Posted by
Snicklefritz
I discovered last week what I think is the source of the (unstated) disagreements with my trainer. My trainer and I have very different goals.
You can't blame the trainer if you never communicate your concerns. I assume you are paying money for the trainer? If yes, then the trainer should be working for you, not the other way around. Tell the trainer what you think and how you feel every day before and after the session.
The problem with 80% effort is that it is not high intensity so the calorie burn potential will be less during and after. I'd find something that you can do at max effort for intervals, and build up to 100% efforts on the treadmill/rower over time. Those elliptical steppers are fairly gentle on the joints and tendons, and at full incline with some resistance, 2-3 minute intervals will give you all the cardio you want.