How can we get Reserve SM's more involved in their physical fitness? This is a critical component to being a soldier right?

There should be more of that then. There should be no reason why so many of us are getting NO GO's in this area unless you are on a profile or something. In that case you have a documentation with limitations. I love this part of my job as a Chaplain Assistant and an NCO. Most soldiers look at my MOS as a very easy one and doesn't require much physical activity. WRONG!!!!! But it's a great motivator for my soldiers to see that their CA is in the top 3 for PT. I am fine with being that motivator but it should already be there. I want to be that NCO that teaches and leads by example.

I'd say you're on the right path. If you continue to strive to motivate effectively and better understand the types of power, you'll likely see more Soldiers looking to you for advice, further improving your ability to provide that solid leadership that may be lacking.

Backbone.

http://www.armystudyguide.com/content/army_board_study_guide_topics/nco_duties/nco-duties-responsibiliti.shtml

I've never really had am issue with soldiers coming to me. I've been a personal trainer for 10 years and have a MS in the field so every unit that I've been in knows to come to me for advice. Some, especially females, get pretty intimidated by it for some reason, which again, they know that physical fitness ia apart of our basic requirements as soldiers. So, I'm trying to find a positive way to bring this up as an importance.

Some things that worked for me:
Make it fun.
Train functions - exercises in kit
Train movements, ie. combatives
Ensure the advice relates to the SM's personal life
Mentor them on their fitness goals (strength, endurance, etc.)
Don't depend on the rank to mentor.

This is true. I need to figure out a way to implement PT into something dealing with my job as a Chaplain Assistant. Spiritual fitness as well as physical fitness. I think that the 2 work great hand-in-hand with one another. Accountability is a major issue that needs to be addressed. We all know the 7 values but some reserve SM's don't follow them at all times especially when it comes to this topic. Do the right thing. Knock our push ups or go for a job here and there. It's too easy!

The CSM in my last unit would do that, which I thought was brilliant but then came the onslaught of SM's complaining and then us as the UMT had to get involved for morale sake. So, it's a tough call.