Quote:
Originally Posted by TrackStar
I haven't had any problems or negative experiences yet. Its just the thought of your legs quickly popping up and down on concrete when you're going very fast just made me think especially with all the talk I hear about runners and their knees.
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oh for pete's sake - i think we all thought you were saying you had an issue already.
No, stairs in and of themselves are not a knee problem. Running overspeed downhill relatively speaking can be more of an issue relatively speaking.
You're not even heel striking on stairs the way you are in a normal run - indeed it's not running in any sense of running gait mechanics. It's a good endurance builder, it's a sport in an of itself (annual stair runs).
But as has been pointed out, mechanics are really important to make sure you don't GET a knee problem from any particular athletic movement pattern. Folks your age are more vunerable to ACL problems than any other group, so strengthening the muscles that support the knees, ensuring excellent mobility overall - not just in the knees but the hips, feet, ankles, pelvis, shoulders, everything. all important.
A movement assessment of some kind - fms, z - all would be great to do at the outset to tune your machine to perform.
all the best,
mc