Flem 5,

I belong to a fitness 24 gym and pay for two sessions a week with a trainer. He routinely does a fitness assesment every 6 weeks and we reasses where I am, and what I am trying to accomplish. It's part of the service.

You might try a local gym with training- sometimes they have a free assesment or some sort of enticement package that includes an assesment and a couple of free or low cost sessions to see if you want to do something with them like joining.