Toning or unstable shoes had been all the rage a few years back. The promotors of those shoes used to make remarkable claims for the shoe. Such claims varied from helping weight loss to reducing cellulite to tightening the buttocks to solving low back pain. The footwear were built with a rocker on the bottom geared towards increasing muscle activity to get those believed benefits. Unfortunately, the research failed to stack up and there was a lot of litigation from unimpressed customers and many manufacturers had to make multi-million dollar agreements with the Ftc.
Although all that is in the past there are still a few of these toning shoes available and they still do have some support from those who are acquainted with them. The shoes do affect the way that you walk and for some individuals that may sometimes lead to an improvement in some things like sore backs. Similarly, it might make some people with low back pain feel worse. There is a lot of effort being directed at studying precisely what these shoes do and precisely who can benefit from them and who may potentially be hurt by them. Each person will likely react in a different way to them.
Foot doctors appear to especially like these sorts of toning shoes due to the type of patients that they see. The rocker sole design of the shoe means they particularly helpful for those with a painful great toe joint, as with the footwear the joint doesn't have to move as much. However, while that could be helpful for that joint it does put more strain on the ankle joint so might create or make more painful issues at the ankle joint. It was problems like this that led to the legal issues in the past and need to be taken into consideration by anyone advising or using these shoes. They do have their uses and they can help for the right individuals with the appropriate condition.