Research Article

Knee Flexion and Daily Activities in Patients following Total Knee Replacement: A Comparison with ISO Standard 14243

Table 3

Validation data for activity monitor results and observations of long videos for four subjects. Time values were rounded to the nearest minute (except for stair walking time). All intraclass correlation coefficients were statistically significant ().

ParameterActivityMonitor resultsObserver resultsICC

Time [min]Lying down4 ± 14 ± 20.99
Sitting18 ± 418 ± 40.98
Stair walking0.73 ± 0.560.64 ± 0.380.93
Level walking21 ± 1125 ± 110.99
Standing21 ± 1124 ± 130.90
Total stationary44 ± 1046 ± 120.91
Total dynamic22 ± 1226 ± 110.92
Overall total66 ± 1572 ± 190.91

StepsLevel walking1121 ± 6071148 ± 5940.99
Stair walking34 ± 2232 ± 200.99