TopicId212
The length of curve / area ratio is that number that identifies the energy expended by the patient to maintain balance.
In practice, if a patient has a large area does not mean that consumes much energy to sit still, but that simply does not have a good balance control.
It is clear that if the area is small is better because it means that you have a good balance control.
But if you have a small area does not mean that consumes little energy to stay balanced because the two cases may be: a small area and length of the small ball or small area and length of the ball great.
Ultimately if the length of curve / area ratio is large, the patient consumes a lot of energy to maintain the bal, if it is a small number means that the patient spends little energy to stand
| Short length / small area 
 ImageId907 | Length large / small area 
 ImageId908 | 
| Short length / wide area 
 ImageId909 | Length large / large area 
 ImageId910 |