slightly significantp = 0.03
The overall mean stiffness recorded by both operators on both the left and right sides was 4.78±1.48 m/s for O1 and 4.45±0.98 m/s for O2 and 74.9±43.7 kPa for O1 and 75.9±43.6 kPa for O2; a slightly significant difference ( p = 0.03) was observed between the two operators for m/s measurements, while no significant difference was detected for kPa measurement ( p = 0.06).