Not the best code but it works
for cv=1:10
    %Create cell array with train data
    EMG_InputSeries = []; Angle_TargetSeries = []; Angle_Moment_TargetSeries = [];
    EMG_InputSeries=cellfun(@(x) x(:,1:11),EMG,'uni', false);
    Angle_TargetSeries=cellfun(@(x) x(:,1:11),Angle,'uni', false);
    Angle_Moment_TargetSeries=cellfun(@(x) x(:,1:11),Angle_Moment,'uni', false);
      %Delete Test column
      for i=1:numel(EMG_InputSeries)
          EMG_InputSeries{i}(:,cv)=[];
          Angle_TargetSeries{i}(:,cv)=[];
          Angle_Moment_TargetSeries{i}(:,cv)=[];
      end
      %Organize as walk,up,down,walk,up,down
      EMG_InputSeries= reshape(vertcat(EMG_InputSeries{:}), [3 30]);
      Angle_TargetSeries= reshape(vertcat(Angle_TargetSeries{:}), [1 30]);
      Angle_Moment_TargetSeries= reshape(vertcat(Angle_Moment_TargetSeries{:}), [1 30]);
  end
