Table 2.
Session means, standard deviations (SD), intraclass correlation coefficient (ICC), standard error of mean (SEM), minimal detectable changes (MDC) for Biodex® Stability System scores.
Outcome Type
Stance & Outcome
1st Session
Mean (±SD)
2nd Session
Mean (±SD)
p
ICC
95% CI
SEM
MDC
Best Score
Dual Limb OSI (°)
1.7 (1.18)
1.32 (.85)
<.01
.80
.44-.92
.89
2.47
Dual Limb APSI(°)
1.2 (.78)
.95 (.56)
<.01
.80
.45-.92
.59
1.64
Dual Limb MLSI (°)
.91 (.75)
.69 (.53)
<.03
.75
.45-90
.61
1.69
Single Limb OSI (°)
1.63 (1.27)
1.40 (1.24)
.34
.63
.28-.83
1.37
3.80
Single Limb APSI (°)
1.21 (.93)
1.05 (.98)
.43
.58
.44-.91
1.09
3.02
Single Limb MLSI (°)
.89 (.75)
.68 (.57)
.08
.68
.20-.81
.69
1.91
Average Score
Dual Limb OSI (°)
2.53 (2.07)
1.61 (1.18)
<.01
.67
.17-.87
1.82
5.04
Dual Limb APSI (°)
1.81 (1.4)
1.15 (.76)
<.01
.65
.13-.87
1.24
3.44
Dual Limb MLSI (°)
1.41 (1.26)
.88 (.75)
<.01
.67
.21-.87
1.11
3.08
Single Limb OSI (°)
2.09 (1.64)
1.77 (1.50)
.06
.88
.71-.95
1.06
2.94
Single Limb APSI (°)
1.61 (1.24)
1.38 (1.15)
.09
.88
.71-.95
.80
2.22
Single Limb MLSI (°)
1.08 (.85)
.87 (.75)
<.03
.86
.64-.94
.58
1.61
OSI: Overall Stability Index, APSI: Anterior/Posterior Stability Index, MLSI: Medial/Lateral Stability Index