Effects of Lower Limb Length and Body Proportions on the Energy Cost of Overground Walking in Older Persons

Table 2

Multivariable regression model testing the association of the energy cost of overground walking with anthropometric measures.

Model: Obs = 62; 𝐹=12.75; Prob > 𝐹 < 0.001; adjusted 𝑅^2 = 0.278.
Cost of locomotion to kinetic energy ratio (kg^−1 sec^−1)	𝛽±SE (𝛽)	𝑃	Standardized 𝛽
Lower limb length (cm)	−3.72 * 10^−3 ± 0.74 * 10^−3	<0.001	−0.78
Lower limb length to height ratio (%)	6.61 * 10^−3 ± 2.14 * 10^−3	0.003	0.48

𝛽=𝛽-coefficient (slope); SE (𝛽): standard error of the 𝛽-coefficient; standardized 𝛽=𝛽-coefficient according to the 𝑍-score calculated after transforming all variables as having a mean of 0 and an SD of 1. The 𝛼-constant (intercept) was 64.89 * 10⁻³.
The initial model also included age and sex that were removed by backward selection (𝑃 = 0.170 and 0.188, resp.).