Overwriting within loops, not correctly saved

I'm interested in de double support phase (DS phase,%) for my participants. The participants are called by t = 3:length(DATA).

I need the DS phase per stride. For example: data of participant t =3, contains ee=53 strides (length of STRIDE_INFO (stride = right+left here)).

For all the stride, the rows I would like to call by ee which are NOT NaN, the caculations can be made.

for t = 3:length(DATA);
   [ww,~] = size(DATA(t).STRIDE_INFO);
       for ee = 1:ww
            if ~isnan(DATA(t).STRIDE_INFO(ee,2)) ;
                Total_stride_time = DATA(t).STRIDE_INFO(ee,8)-DATA(t).STRIDE_INFO(ee,2);
                % number of columns (ee,?) represents the different gait events right and left
                Double_S2_time = DATA(t).STRIDE_INFO(ee,7)-DATA(t).STRIDE_INFO(ee,4) ;
                Double_S2 = (Double_S2_time./(Total_stride_time)*100)
                
                Stance_time_R =  DATA(t).STRIDE_INFO(ee,3)-DATA(t).STRIDE_INFO(ee,2);
                HS_to_HS =  DATA(t).STRIDE_INFO(ee,6)-DATA(t).STRIDE_INFO(ee,2);
                Double_S1_time =  Stance_time_R - HS_to_HS;
                Double_S1 =  (Double_S1_time./(Total_stride_time))*100
                                
            end
            
       end     
       DATA(t).DB_supp = [Double_S1 Double_S2];
  end 

Can someone tell me why this is not resulting in the DS1 and DS2 phase per participant per stride? I know data is somewhere overwritten because I end up with a single value per participant instead of per stride. Is it the place of where I save the DS data in DATA(t).DB_supp? Because I moved it up to check if that solved the problem, but it didn't.