MAJOR FIX(forces)!: Fix issue in mean force calculation

The previous formatting was taking the mean values of the bounds of the
periods in the force signal, which corresponds essentially to the value
of the maximums. Instead it should return the mean value of the force
OVER THE FULL PERIOD.

utils/calctrueforces.m

@@ -23,13 +23,14 @@ function [ResData] = calctrueforces(ResData)
                         inF = ResData(i, j).AllPhases(1).(pos).inertiaF;
                         inM = ResData(i, j).AllPhases(1).(pos).inertiaM;
                     else
-                        inF = 0;
-                        inM = 0;
+                        inF = [0, 0, 0];
+                        inM = [0, 0, 0];
                     end
 
                     % Raw force
-                    meanFraw = mean(ResData(i, j).(pos).forces(indexes(iPart, :), :));
-                    meanMraw = mean(ResData(i, j).(pos).moments(indexes(iPart, :), :));
+                    idx = indexes(iPart, 1):indexes(iPart, 2);
+                    meanFraw = mean(ResData(i, j).(pos).forces(idx, :));
+                    meanMraw = mean(ResData(i, j).(pos).moments(idx, :));
 
                     % True value
                     ResData(i, j).AllPhases(1).(pos).meanF(iPart, :) = meanFraw - inF;