Table 2.

Temporal features of gait for individuals with inclusion body myositis who scored above the median value for summed lower extremity isometric peak force (high force subgroup) and below the median value for summed lower extremity peak force (low force subgroup). P-value references comparison between low force and high force subgroups (Mann–Whitney U test).

	Low Force Subgroup (n=21)		High Force Subgroup (n=21)
	Median (IQR)	% of normal	Median (IQR)	% of normal
Habitual gait speed
Speed (statures)	.52 (.36 – .60)	59 ±20	.65 (.57 – .73)*	76 ±17
Cadence (steps/min)	96.8 (80.8 – 100.9)	79 ±12	104.4 (98.1 – 112.5)*	86 ±13
Gait cycle time (s)	1.24 (1.19 – 1.49)	129 ±21	1.15 (1.06 – 1.22)†	120 ±26
Double limb support time (%GC)	35.5 (32.2 – 38.7)	n/a	31.8 (29.0 – 33.5)*	n/a
Stance time (%GC)	32.6 (31.1 – 34.2)	n/a	34.1 (33.5 – 36.3)*	n/a
Swing time (%GC)	32.2 (30.0 – 33.7)	n/a	34.4 (32.7 – 35.5)†	n/a
Fast gait speed
Speed (statures)	.57 (.38 – .71)	48 ±18	.81 (.65 – .97)*	66 ±16
Cadence (steps/min)	107.2 (85.5 – 112.3)	73 ±13	120.3 (113.3 – 131.7)*	83 ±11
Gait cycle time (s)	1.12 (1.07 – 1.41)	142 ±35	1.00 (.91 – 1.06)*	123 ±19
Double limb support time (%GC)	33.7 (31.2 – 41.0)	n/a	30.3 (28.0 – 33.4)†	n/a
Stance time (%GC)	33.6 (30.4 – 35.3)	n/a	34.8 (32.8 – 36.4)	n/a
Swing time (%GC)	31.6 (29.9 – 34.5)	n/a	35.3 (31.6 – 35.7)	n/a

^*statistically significant, p < .01

^†statistically significant, p < .05

Abbreviations

%GC: percentage of the gait cycle

IQR: interquartile range

min: minutes

s: seconds