A. Ebrahimpour et Ll. Fitts, MEASURING COHERENCY OF HUMAN-INDUCED RHYTHMIC LOADS USING FORCE PLATES, Journal of structural engineering, 122(7), 1996, pp. 829-831
Citations number
9
Categorie Soggetti
Engineering, Civil","Construcion & Building Technology
This paper presents the results of an experimental study on measuring
and quantifying the coherency of crowd-rhythmic movements. Two instrum
ented force plates were used to independently measure the load-time hi
stories of sets of two volunteer subjects performing rhythmic movement
s. Subjects were asked to synchronize their motion to audible signals
played at various frequencies. We observed that the coherency of motio
n varies as a function of the frequency of motion. In addition to audi
tory effect, the coherency is controlled by a visual effect (i.e, subj
ects synchronize their motion with respect to the musical beat and mov
ements of one another). Statistics of the coherency of motion are pres
ented for subjects standing in two different orientations, and a suita
ble type of probability-distribution function is suggested.