BioMed Research International / 2015 / Article / Tab 1

Research Article

The Discriminant Value of Phase-Dependent Local Dynamic Stability of Daily Life Walking in Older Adult Community-Dwelling Fallers and Nonfallers

Table 1

The gait features contained in the three predictor matrices used in the partial least square discriminatory analysis (PLS-DA) of elderly fallers and nonfallers. The gait features written in italic style are the same features used in Weiss et al. (2013) [13].

Predictor matrix (46 gait features)Predictor matrix (38 gait features)Predictor matrix (8 gait features)

(phase: 0%, (1)) (phase: 0%, (1))
(phase: 0%, (2)) (phase: 0%, (2))
(phase: 60%, (1)) (phase: 60%, (1))
(phase: 60%, (2)) (phase: 60%, (2))
(phase: 0%, (1)) (phase: 0%, (1))
(phase: 0%, (2)) (phase: 0%, (2))
(phase: 60%, (1)) (phase: 60%, (1))
(phase: 60%, (2)) (phase: 60%, (2))
Acceleration rangeAcceleration range
Acceleration root-mean-squareAcceleration root-mean-square
Amplitude of dominant frequencyAmplitude of dominant frequency
Average stride durationAverage step duration
Average step durationAverage step duration
Harmonic ratioHarmonic ratio
Median walking bout durationMedian walking bout duration
Median number of steps for boutMedian number of steps for bout
Slope of dominant frequencySlope of dominant frequency
Step symmetryStep symmetry
Step regularityStep regularity
Stride regularityStride regularity
Total number of stepsTotal number of steps
Total number of walking boutsTotal number of walking bouts
Total percent of walking durationTotal percent of walking duration
Width of dominant frequencyWidth of dominant frequency

Gait feature defined for AP, ML, and V direction, separately.