Comparing Balance Performance on Force Platform Measures in Individuals with Parkinson’s Disease and Healthy Adults
Table 4
Discriminative validity of force platform measures between PD and healthy cohorts.
Force platform variable
T statistic (df)
value
95% confidence interval
SOT composite equilibrium (1–100)
2.56 (64.563)
0.013
1.286, 10.357
SOT vestibular ratio (0-1)
2.26 (68.555)
0.027
0.012, 0.185
SOT visual preference
0.37 (80.477)
0.710
−0.039, 0.057
SOT fall number
−2.53 (50.466)
0.015
−1.527, −0.175
LOS average endpoint excursion (%)
0.81 (89.681)
0.422
−3.367, 7.964
LOS movement velocity (m/s)
4.36 (94.456)
<0.001
0.597, 1.595
LOS number of falls
−0.17 (93.594)
0.866
−0.365, 0.308
LOS number of falls on targets 4, 5, and 6
−1.39 (85.006)
0.167
−0.412, 0.072
LOS average endpoint excursion on targets 4, 5, and 6 (%)
0.13 (88.294)
0.899
−6.288, 7.512
MCT average latency (ms)
−0.81 (86.129)
0.419
−5.175, 2.174
MCT average amplitude to large perturbations (degrees/second)
−0.06 (76.892)
0.949
−1.364, 1.279
Independent t-tests between Parkinson’s and healthy cohort are represented. The significance level set at alpha <0.05. SOT, sensory organization test; LOS, limits of stability test; MCT, motor control test; df, degrees of freedom.
