Table 1.
Group | N | Female | Age (yrs) Mean (SD) |
Height (m) Mean (SD) |
Weight (kg) Mean (SD) |
Target Step Length (/bh) | Resultant Step Length (/bh) Mean (SD) |
Target Gait Speed* | Resultant Gait Speed* Mean (SD) |
---|---|---|---|---|---|---|---|---|---|
A | 19 | 8 | 28.9 (6.9) | 1.7 (0.1) | 69.2 (14.9) | 0.434 | .433 (.035) | 0.4** | .396 (.039) |
B | 18 | 11 | 24.3 (4.9) | 1.7 (0.1) | 65.4 (13.5) | 0.301 | .309 (.027) | 0.2 | .203 (.017) |
C | 20 | 14 | 24.9 (5.1) | 1.7 (0.2) | 68.0 (12.6) | 0.434 | .422 (.027) | 0.2 | .204 (.013) |
This is a dimensionless measure: sacral velocity normalized by where g is the acceleration due to gravity and bh is the subject's body height.
Target for the initial 8 subjects was 0.47; analysis revealed that the subjects could not consistently reach this target, so the target was adjusted to 0.4 for the remaining 11 subjects.