Maximum hand grip protocol serves for acquiring and computing the average maximum value of force that subject is able to apply by squeezing the provided force measurement device. Later the computed average maximum value is passed to global variable in order to be used in other protocol routines described in parallel subsections of this document.
The source code of this program is located in physRunHandgripMax.m file. In this function we are aiming to get three separate measurement of hand grip force and compute the average.The algorithm of implementation consists of initialization, acquisition and computation phases.
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In this phase function physRunHandgripMax looks for the maximum value of hang grip that has been acquired during n-th measurement. As subject applies a force the program monitors and stores the maximum value that have been acquired in variable HANDMAX_TMP(n), which is displayed in real time on the screen. Subject can continue applying force but new value will be accepted only if it is greater than previously recorded force value during the same measurement. To proceed to next measurement any of 0-7 buttons shall be pressed.
Computation
After acquiring all the necessary samples of maximum hand grip force the program computes the average using sample mean formula. The computed average value is passed to global variable HANDGRIP_MAX. This average maximum force value is also displayed on the screen during all n measurements.