Interesting, John. I cannot 'walk' in the normal sense, but I spend about an hour on the NU-STEP several times a week. I also exercise in the water, tho' i know that won't affect the atrophy.

I believe that my muscle atrophy is primarily caused by denervation. Two of the primary nerves in my lowers legs are completely non-responsive in an EMG and the third is severely damaged.

First EMG 2010:

INTERPRETATION:
1. PROFOUND AXONAL NEUROPATHY: RIGHT AND LEFT PERONEAL AND TIBIAL NERVES.
2. PERIPHERAL NEUROPATHY: RIGHT AND LEFT PERONEAL AND TIBIAL NERVES.
3. RIGHT AND LEFT SURAL NERVE NEUROPATHY

QUOTE Denervated muscles atrophy rapidly. Neurogenic atrophy is faster and more complete than disuse atrophy, although these types may be difficult to differentiate in some patients.

This quote is from Science Direct. Because I'm new I cannot include links in my posts.

QUOTE: Axonal degenerative polyneuropathies tend to produce weakness along with muscle atrophy, but atrophy is much less conspicuous in segmental demyelinating polyneuropathies because in these disorders the axon remains in continuity with the muscle, preventing denervation atrophy. The most common symptom in polyneuropathy is weakness in dorsiflexion of the feet at the ankles. This can result in a partial or complete foot drop that typically causes the feet to slap while walking and predisposes the patient to stumble and fall when the toes catch on an uneven surface.

This quote is from the Cleveland Clinic. I cannot post the link.