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Concentric only is similar to sled dragging

But I think without eccentric training, your muscles are not going get much bigger for strength gains that transfer over to non related tasks
And jumping off a run requires ability to absorb very large eccentric forces on the plant and landing

Hi Cool. Thank you for your comment.

Been a long time since coming to the forum here. Where I live, the Mayor let parks and recreation put the rims back up on the back boards a few weeks ago. I need to go back through the forum here and see what my standing vertical was then. Last time I checked my standing vertical, it was about 16.5". When I first tried the vertical test, I got 8.5 inches. And it hurt on the landing due to too much weight. The only exercise I"m doing now is sled dragging, and running around the open basketball court. I hope the Mayor doesn't close them down again.

Coming back to the forum may help re energize me to keep healthy.

Achilles issues seem to plague older folks

You will need to slow concentric and eccentric calf work, and Isometrics to fix it over many weeks and months. Both for gastroc and soleus, ie straight legged and bent knee
Rest won't help as tendons need load

I don't have any pain in my Achilles. My doctor was not concerned too much about it as there is no pain. Just got back from sled dragging at my local park. No pain. My case must be a minor one. I have read where it can take months to heal up.

X2 be very careful with achilles. My achilles have plagued me for years! I haven't been able to sprint or play organised sport for the last 2 seasons due to fibrosis in my left achilles despite going to physiotherapists, podiatrists and having shock wave therapy and dry needling to my calves etc.

Any thoughts on using compression socks?

won't help your issue, but might help your calf muscles

Forefoot varus is a "tilt" of the metatarsal heads where the outside of your forefoot naturally rests lower than the inside.  The subtalar joint is the main controller of the pronation and supination of your foot—an inward roll (eversion) at the subtalar joint is exactly what a regular runner would call "pronation."

This describes me. I always rolled an ankle several times a year until I bought lace up ankle braces with Velcro strips to keep my feet from pronating upon jumping.