Help with kicks/lower body strengthening (Big Man)

[sensei8]

Get into the swimming pool!! It'll help you build up many of the required muscle groups needed to execute kicks.

Also, get the densest hanging bag and whack the tar out of it. Make the bag wish you hadn't bought it!!

[Evil Dave]

Body weight squats, lunges, etc maybe alright for KarateCroft, or they may further compound the problem. It all depends upon the injury history and will be independent of the individual involved. Two people with diagnosed with the same knee issue may take three different treatment methodologies to rectify the problem.

[pers]

Is your knee injury due to your kicking ? if so it means you are not kicking correctly and being on the heavy side if you don't use your body correctly to kick the damage is worse as you put too much stress on your joints and kness .

It is very difficult to learn to kick the correct way from advice in here , only way is to have a good instructer who can see you doing it and correct you as you go along .

One tip though .... if it hurts don't do it ,you will lose more than you gain in a long run.