Hi Dan,
My leg strength difficulties - when they happen - always occur on the way UPstairs, except for knee troubles which occur on the way DOWNstairs.
The upstairs thing has almost gone since I started working out regularly, although when the fatigue hits me hard I still struggle sometimes. The downstairs thing (in my case knee pain) is, as far as I know, incurable unless you can somehow remove the inflammation.
Have you had an infection recently like DanVon?
Loz :)
