Fig. 2

Resulting PCA with 16 parameters and 86.2% explained variance. Components are color coded and circled. Meaningful cross-loadings are indicated by color gradients. In contrast to the other parameters loading on Clinical (Gait), higher values in COMPLEXITY represent better performance. FATREV: activity fragmentation, RELPA: relative time being physical active, CADENCE: walking fragmentation, MEANG (mean acceleration): energy expenditure, MAD (mean amplitude deviation): energy expenditure, PEAKSTD (STD of ang. vel. peaks): movement intensity, PEAKRATIO (signal to noise ratio of ang. vel. peaks): movement smoothness, STD (STD of ang. vel.): movement intensity, MAX5 (5 highest ang. vel. peaks): intensity, ACTI (mean ang. vel.): intensity, MEANPEAK (mean of ang. vel. peaks): intensity, WSS (Watzmann Severity Scale): severity of MS, NORM10 (self-paced time to cover 10m): walking ability, MAX10 (time to cover 10m at maximum pace): walking ability, TSUG (timed stand up and go): functional gait capacity, COMPLEXITY (quality of gait): walking ability