Ive included this external description of the “alfredson protocol”

You’ll immediately see why this treatment as a stand alone treatment is quite, but not totally successful. it must be combined with trigger points, and stretching, mets and the correct food to underpin the rebuilding the body needs to to do.

The source for this part of the regime is

Heavy-Load Eccentric Calf Muscle Training For the Treatment of Chronic Achilles Tendinosis

This is a much younger me using this technique in 2010. (NB I don’t have access to this channel any more),