Reliability of the Maximal Step Length Test and Its Correlation with Motor Function in Chronic Stroke Survivors
Table 6
(a) Correlation between MSLs of affected side and other outcome measures
MSL Forward
MSL Sideway
MSL Backward
Spearman rho
Spearman rho
Spearman rho
Affected knee muscle strength (kg)
Flexor
0.561
<0.001
0.505
<0.001
0.515
<0.001
Extensor
0.380
0.015
0.393
0.012
0.413
0.008
Affected ankle muscle strength (kg)
Dorsiflexor
0.549
<0.001
0.287
0.078
0.486
0.001
Plantar Flexor
0.706
<0.001
0.481
0.002
0.633
<0.001
LOS MXE (%)
Forward
0.409
0.009
0.302
0.064
0.357
0.023
Affected side
0.200
0.220
0.057
0.709
0.195
0.231
Less affected side
0.253
0.124
0.189
0.246
0.239
0.147
Backward
0.236
0.147
0.233
0.151
0.230
0.153
BBS
0.696
<0.001
0.536
<0.001
0.673
<0.001
5-meter walk test (m/s)
Maximal
0.577
<0.001
0.348
0.027
0.498
0.001
Comfortable
0.499
0.001
0.285
0.079
0.412
0.009
ABC
0.069
0.660
0.069
0.660
0.096
0.563
LOS, Limits of Stability; MXE, maximal excursion; BBS, Berg Balance Scale; ABC, Activities-specific Balance Confidence Scale. indicates a significant correlation at the p ≤ 0.05 level of confidence (p values were adjusted with False Discovery Rate correction).
(b) Correlation between MSLs of less affected side and other outcome measures
MSL Forward
MSL Sideway
MSL Backward
Spearman rho
Spearman rho
Spearman rho
Affected knee muscle strength (kg)
Flexor
0.548
<0.001
0.541
0.001
0.580
<0.001
Extensor
0.411
0.009
0.477
0.002
0.363
0.021
Affected ankle muscle strength (kg)
Dorsiflexor
0.423
0.007
0.264
0.108
0.430
0.006
Plantar Flexor
0.596
<0.001
0.384
0.014
0.619
<0.001
LOS MXE (%)
Forward
0.360
0.022
0.263
0.108
0.372
0.018
Affected side
0.085
0.610
0.005
0.971
0.212
0.193
Less affected side
0.239
0.147
0.134
0.420
0.288
0.078
Backward
0.234
0.153
0.137
0.418
0.236
0.147
BBS
0.618
<0.001
0.523
<0.001
0.700
<0.001
5-meter walk test (m/s)
Maximal
0.540
<0.001
0.245
0.138
0.537
<0.001
Comfortable
0.468
<0.001
0.169
0.300
0.455
<0.001
ABC
0.123
0.457
0.109
0.512
0.077
0.637
LOS, Limits of Stability; MXE, maximal excursion; BBS, Berg Balance Scale; ABC, Activities-specific Balance Confidence Scale. indicates a significant correlation at the p ≤ 0.05 level of confidence (p values were adjusted with False Discovery Rate correction).
