Table 1.

Differences in ETGUG duration by walker type.

Variables	Fixed Walker (n = 40) Friedman’s Mean Rank	Two-Wheeled Walker (Approach 2) (n = 40) Friedman’s Mean Rank	Four-Wheeled Walker (n = 40) Friedman’s Mean Rank	X2 (2)
PCI	2.03	2.15	1.83	2.177
FHR	1.91	1.99	2.10	0.770
ETGUG duration	1.93	2.43	1.60	15.80 *
Gait speed	2.15	1.50	2.35	15.80 *
Stability and safety	2.38	1.69	1.94	13.02 *
Ease of use	1.14	1.74	2.13	6.07 **

Friedman’s test: non-parametric statistical test to detect differences in treatments across multiple test attempts; X²: Wilcoxon’s test (non-parametric statistical hypothesis test to compare two related samples); PCI: Physiological Cost Index (maximum heart rate/minute during the walking test); FHR: frequency of heart rate (beats per minute, bpm); ETGUG: Expanded Timed Up and Go test (defined as the time spent in seconds to move 20 meters); Gait speed: expressed as the walking distance in meters, divided by 60 seconds; “Stability and safety” and “Ease of use” items: expressed as a Likert score from 1 to 5, with 1 being “dissatisfied” and 5 being “fully satisfied”. * p < 0.001, ** p < 0.005.