Table 1.
General characteristics of the study sample and results from the six-minute walk test (n = 62).
| General characteristics | |
| Age, years (mean ± SD) | 69.1 ± 5.4 |
| Female sex, n (%) | 12 (19) |
| Weight, kg (mean ± SD) | 72.3 ± 13.0 |
| Height, cm (mean ± SD) | 169.8 ± 7.7 |
| Lower limb length, cm (mean ± SD) | 87.7 ± 5.6 |
| Lower limb length to height ratio, % (mean ± SD) | 51.7 ± 1.9 |
| Results from the six-minute walk test | |
| Distance walked, m (mean ± SD) | 424 ± 63 |
| Mean walking speed, m sec−1 (mean ± SD) | 1.2 ± 0.2 |
| Mean kinetic energy, joule (mean ± SD) | 51.6 ± 18.4 |
| Step number, n (mean ± SD) | 310 ± 42 |
| Step cadence, sec−1 (mean ± SD) | 0.86 ± 0.12 |
| Step length, m (mean ± SD) | 1.38 ± 0.19 |
| Step number per meter, m−1 (mean ± SD) | 0.74 ± 0.10 |
| Resting metabolic rate, joule min−1 (mean ± SD) | 5,312 ± 958 |
| Gross energy expenditure throughout the test, joule (mean ± SD) | 129,362 ± 30,213 |
| Net energy expenditure throughout the test, joule (mean ± SD) | 97,489 ± 25,617 |
| Cost of locomotion, joule kg−1 sec−1 (mean ± SD) | 3.73 ± 0.64 |
| Cost of locomotion to kinetic energy ratio, kg−1 sec−1 (mean ± SD) | 79.9 ∗ 10−3 ± 26.5 ∗ 10−3 |