Figure 2

Group differences. Boxplots of significant (all p < 0.05) differences between the cognitive impaired and cognitive intact elderly on trunk variability of ML trunk acceleration patterns as quantified by the RMS and the α and of stride-to-stride variability quantified by the phase variability index (PVI) and the α of the stride-to-stride fluctuations. The lower and upper lines of the box are the 25th and 75th percentiles of the sample. The line in the middle of the box is the sample median. The vertical lines extending above and below the box show the extent of the rest of the data.