With a better composition of foam rubber balance is also simulated best by using all simulations. It may be concluded that the four aspects of aging chosen are of major importance for the deterioration in gait pattern and balance. A new project is well under way, investigating the relationship between the firmness of the foot support material and balance control. It is expected that an S-curve will show a sharp decrease in balance control when using gradually softer materials for foot support. This then will enable us to choose materials that will maximize the amount of required tactile feedback and minimize the impact on joints, such as ankle, knee and hip, when walking.
Essential tremor is characterized by a postural or action tremor, which is absent at rest.
The frequency of essential tremor ranges from 4 to 8 Hz and the tremor may involve many parts of the body, although the hands are most commonly affected. The onset of the disease may occur at any age with no obvious gender or racial differences. The tremor may progress over time, but the process is usually slow and nonfatal. Therefore, essential tremor is generally considered a 'benign' condition. However, as its name implies, the etiology of essential tremor remains unknown.