Table 3. Intervention Effects on Secondary Outcomes (Representing Components of Intervention and Additional Mobility Measures).

Outcome and time frame	Standard-plus		Standard		Adjusted difference (SE)a	P valuea
	Mean (SD)	P value	Mean (SD	P value
Lower extremity strength change, newtons
12 wk	7.5 (29.7)	.02	3.0 (23.6)	.21	−1.8 (4.5)	.68
24 wk	−2.2 (35.5)	.60	2.0 (27.9)	.54	−4.9 (4.6)	.30
36 wk	5.7 (26.0)	.10	−0.5 (24.8)	.89	−4.0 (4.8)	.41
LE power change, watts
12 wk	−14.3 (55.7)	.54	−3.9 (61.4)	.02	−11.0 (10.2)	.28
24 wk	−11.3 (49.5)	.06	−6.0 (58.9)	.39	−11.8 (10.1)	.24
36 wk	0.6 (53.5)	.93	−12.3 (68.7)	.17	−13.0 (13.2)	.34
Six-minute walk distance change, m
12 wk	39.9 (63.4)	<.001	35.0 (53.5)	<.001	4.1 (9.0)	.65
24 wk	31.8 (58.0)	<.001	20.6 (76.2)	.008	7.3 (10.2)	.47
36 wk	34.5 (56.8)	<.001	26.1 (72.8)	<.001	9.9 (9.7)	.31
Figure of 8 time change, s
12 wk	−1.0 (1.6)	<.001	−1.0 (2.0)	<.001	−0.1 (0.2)	.58
24 wk	−0.8 (1.5)	<.001	−0.7 (2.2)	.002	−0.1 (0.2)	.51
36 wk	−0.7 (1.6)	<.001	−0.8 (2.2)	<.001	−0.0 (0.2)	.98
Figure of 8 steps change, steps
12 wk	−1.000 (2.3)	<.001	−0.9 (2.3)	<.001	−0.2 (0.3)	.56
24 wk	−1.0 (2.1)	<.001	−0.4 (2.4)	.10	−0.4 (0.3)	.19
36 wk	−0.7 (1.9)	<.001	−0.7 (2.1)	.001	0.0 (0.3)	.95
Chair sit and reach change, cm
12 wk	0.6 (7.5)	.42	2.4 (7.2)	<.001	−1.6 (1.0)	.12
24 wk	1.8 (7.7)	.02	1.6 (8.4)	.06	0.8 (1.2)	.48
36 wk	−0.8 (7.9)	.34	−0.1 (8.6)	.93	−0.2 (1.2)	.87
Modified Gait Efficacy Scale change
12 wk	−1.7 (10.8)	.09	−0.2 (10.9)	.84	−1.5 (1.3)	.28
24 wk	−1.4 (9.9)	.13	−1.3 (9.5)	.13	−0.3 (1.3)	.81
36 wk	−2.3 (12.0)	.046	−1.6 (9.5)	.07	−0.9 (1.3)	.49
Short Physical Performance Battery change
12 wk	0.2 (1.5)	.24	0.4 (1.3)	.002	−0.2 (0.2)	.28
24 wk	0.4 (1.4)	<.001	0.5 (1.3)	<.001	−0.1 (0.2)	.68
36 wk	0.2 (1.4)	.02	0.4 (1.3)	.002	−0.2 (0.2)	.36

^a Obtained using a linear mixed model with multiple imputation for missing values.