Hi Hinker

That sounds like a good way to proceed. You physio may well be onto it. The eccentric exercise takes time to improve matters so it will be a while before you will know if it is helping. The loading of the muscle stresses the muscle and tendon in a positive way so that the tendon remodels itself over time - it becomes more healthy and resilient. However tendon doesn't remodel quickly - it is much slower to adapt to the stress than muscle or bone is. So you are looking at several weeks to months. Even when you start feeling better you should keep on the regime as you are likely loose the pain before the tendon is in optimal condition.

Eccentric exercise (lengthening the muscle while you are loading it) produces the most delayed muscle soreness in the muscle of any type of exercise. This soreness is that typical soreness from a vigorous workout but can be quite marked when doing eccentric training. It usually comes on several hours after the exercise - often up to 24 hours. (When it is more sever it comes on earlier). If you made yourself really sore it will take several days to settle down. So don't worry - it is unlikely to be anything serious - probably just got stuck into it rather enthusiastically.

Your muscles should soon get conditioned to it and then you shouldn't get pain even when working them quite hard.