|Standard shoes||Orthopaedic shoes|
|N = 25||A. Mean||(SD)||Confidence interval||B. Mean||(SD)||Confidence interval||Relative change||T-test (p)|
|Step frequency (Hz)||1.76||(0.18)||1.69–1.82||1.76||(0.17)||1.70–1.82||0.0%||0.51|
|Dynamic stability (λ*)||V||0.71||(0.14)||0.65–0.76||0.65||(0.11)||0.60–0.69||-9%||0.03|
Values are expressed as mean (N = 25), Standard Deviation (SD) and 95% Confidence Interval (mean ±1.96 times the Standard Error of the Mean). Relative change is the average percentage of change induced by orthopaedic shoes (i.e. column B minus column A divided by column A). The t-test column shows the p values of paired t-tests. Step frequency is the number of steps per second (walking cadence). Dynamic stability is defined as the logarithmic rate of divergence in the acceleration signals (finite time Lyapunov exponent, λ*). ML, V and AP stand for respectively Medio-Lateral, Vertical and Antero-posterior accelerations, i.e. the 3 axes measured by the triaxial accelerometer.
Terrier et al.
Terrier et al. BMC Musculoskeletal Disorders 2013 14:94 doi:10.1186/1471-2474-14-94