Says:-

There is an instrument called 'Force Platform', that can record the foot/sole pressure, percentage of weight transfer on each foot, etc. That might be helpful for your study.

Yes..Its a standard instrument....But I am studying the design of the platform also..that is why I wanted to know about the pressure sensors used in them....

Says:-

If you intend to study the mechanism of the Force Platform machine, I would suggest you to contact any specialist in the field of Circuit Engineering or who is aware of the machine mechanics.

Good luck with your pursuits.

Sir, Have you worked with the pressure sensors?

Sai is right, "force plate/platforms" are typical when you need to examine force/pressure at a specific spatial point (say during gait). However, there are other force mats or matrix force/pressure sensors that could be used as shoe inserts and with a transmitter/data-logger at participant's waist let you collect such information throughout the experiment.

Tekscan is one such company:

http://www.tekscan.com/pressureSensors

I have used their shoe inserts

I have a BEng (Hons) Mechanical Eng,BSc in Podiatry , MSc in Bioengineering, MSc in Podiatry and PhD in Pdiatric Biomechanics at Strathclyde University and I was one of the pioneers studying plantar pressures with Marylin Lord, Sue Barnett, Peter Cavanagh, Betts etc. I constructed a inshoe plantar pressure system using FSR technology and I use PEDAR, TEKSCAN, RSCAN, VICON, Dynamic pedobarograph, Harris Beath Mat. To be honnest the Harris Beath Mat seems the best in terms of pressure pattern and I made a control study with Dynamic Pedobarograph which is the best system for barefoot analysis and has the same pressure pattern

About factors for static just to take at least 3 trilas, for dynamic it is better to get 12 trilas first step protocol and also to subgroup the subjects according to hindfoot to foreffot malalignment