The typical error of measurement (%TE) for W
max measurement is illustrated by the shaded area. Values within this area represent non‐response. Non‐response was 69% (11 of 16), 40% (6 of 15), 29% (4 of 14), 0% (0 out of 17) and 0% (0 out of 16) for groups 1, 2, 3, 4 and 5, respectively. [Color figure can be viewed at wileyonlinelibrary.com]