The inclinometer was set to a zero value prior to each of the three measurements using a bubble level to ensure accuracy.
A trained assistant with approximately 6-months
experience using inclinometry recorded measurements
from the inclinometer in order to ensure the
investigators were blinded to the findings. Measurements
were recorded at eye-level to ensure accuracy
and were not verbalized to the tester given the potential
for measurement bias given a 10-second rest
between measurements was used