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

Figure 4

The TP-loading scores and corresponding values for 46 gait features (predictor matrix in Table 1). The feature numbers in the middle are linked to the list of gait features as follows: (1) total number of walking bouts, (2) ML harmonic ratio, (3) total percent of walking duration, (4) V step symmetry, (5) AP amplitude of dominant frequency, (6) ML step regularity, (7) V acceleration root-mean-square, (8) ML acceleration root-mean-square, (9) total number of steps, (10) V harmonic ratio, (11) ML step symmetry, (12) AP acceleration root-mean-square, (13) AP slope of dominant frequency, (14) AP stride regularity, (15) ML stride regularity, (16) V step regularity, (17) ML acceleration range, (18) V stride regularity, (19) AP step symmetry, (20) median walking bout duration, (21) V acceleration range, (22) AP harmonic ratio, (23) ML width of dominant frequency, (24) V , (25) AP step regularity, (26) V slope of dominant frequency, (27) V width of dominant frequency, (28) ML , (29) AP width of dominant frequency, (30) AP , (31) V amplitude of dominant frequency, (32) ML amplitude of dominant frequency, (33) ML slope of dominant frequency, (34) median number of steps for bout, (35) AP acceleration range, (36) (phase: 0%, (2)), (37) (phase: 0%, (2)), (38) Cadence, (39) average stride duration, (40) average step duration, (41) (phase: 60%, (2)), (42) (phase: 0%, (1)), (43) (phase: 0%, (1)), (44) (phase: 60%, (1)), (45) (phase: 60%, (1)), and (46) (phase: 60%, (2)). The phase-dependent local dynamic stability measures, and , are represented as green bars whereas conventional local dynamic stability measures, , are represented as red bars. The yellow bars represent gait features used in Weiss et al. (2013).