Oxygen Cost of Walking in Persons with Multiple Sclerosis: Disability Matters, but Why?

Table 3

Summary of hierarchical linear regression analyses for predicting oxygen-cost of walking in 82 persons with MS.

Variable	𝐵	SE 𝐵	𝛽
Step 1
PDDS	0.0188	0.0035	0.518*
Step 2a
PDDS	0.0045	0.0056	0.123
FSS	−0.0047	0.0048	−0.103
Gait velocity	−0.0011	0.0003	−0.570*
Step 2b
PDDS	−0.0015	0.0045	−0.040
Cadence	−0.0022	0.0004	−0.671*
Step length	−0.0007	0.0006	−0.137

Note. 𝑅²=0.259 for Step 1; Δ𝑅²=0.111 for Step 2a; Δ𝑅²=0.264 for Step 2b (𝑃<0.05, two-tailed test).
 ^∗𝑃<0.05 with one-tailed test.