function [kinPerSec]=shiftingKin(kin, windowEEG, shift)
    kinPerSec=zeros(fix((max(kin(:,1))-windowEEG*1000)/(shift*1000)),3);
    for j=1:size(kinPerSec,1)
        tmp=sum(diff(kin(kin(:,1)>(j-1)*shift*1000 & kin(:,1)<=(j-1)*shift*1000+windowEEG*1000,2:4)));
        i=j;
        while isnan(tmp) %interval is empty
            tmp=sum(diff(kin(kin(:,1)>(i-1)*shift*1000 & kin(:,1)<=(i-1)*shift*1000+windowEEG*1000,2:4)));
            i=i+1;
        end
        kinPerSec(j,:)=tmp;
    end
end