In complete agreement to this , the OP is using Asics gel based shoes, in my quest for the perfect shoe for my knee condition and others , seldom have I come across a better shoe than Asics ... Asics indoor soccer shoes have required support for table tennis , if you are looking for more support you can use their volleyball shoes which will have more "gel" .... now coming to changing the insole .. I tried a couple of options ...
1. the regular gel based support you can buy off the racks in department stores ..
2. Recommended by Der_Echte : Powerstep max support ... this one is actually good for regular shoes , it was too stiff to use in sports shoes because it was actually causing me pain by being too stiff for my feet ...
I would say you can get gel based insoles , you can even go for Powerstep which is recommended by doctors and has sports specific options ... and buy soccer or volleyball shoe depending on what level of cushioning you want ...
now there is one more important thing .. that is the life of a shoe ... it really depends on usage pattern and your bodyweight ... you already have said your shoes are older .. you need to always keep a spare pair of shoes , buy two the next time and keep one in reserve , that way you will be able to
1. quickly tell if you suspect its the age of the shoe or really the support that is causing the issue
2. a new shoe ready in hand ...
point is , most of us try to tell the wear and tear by the external symptoms like the grip in the sole or whether the seams are tearing apart , I have experienced that the internal construction of the shoe also breaks down without any visible wear and tear .. so its best to change your shoes every six months or so if you are playing regularly and are on the heavier side ...
From the indoor soccer shoes I have, I don't think that is accurate. The indoor soccer shoes I use can handle force from every direction better than most TT shoes. They are much more durable.
And although TT's movement is almost all lateral, the movement in soccer that is lateral, is done with more force. So it would make sense that they would need to be able to handle cuts and turns and changes in direction.
Anyway. Lots of shoes like badminton shoes and volleyball shoes that can be used for TT.
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