Table 1.
Gait-slip | Sit-to-stand-slip | ||
---|---|---|---|
Tasks |
After ~10 walking trials, the 1st unannounced slip |
After ~4 regular trials, the 1st unannounced slip |
|
Release mechanisms |
Pre-released movable platform prior to foot contact |
Both movable platforms were released at seat-off |
|
Maximum allowed slip distance |
1.50 m |
0.24 m |
|
Slip outcome classification criterion |
Fall | Peak harness force ≥ 30% bw† | Peak harness force ≥ 30% bw |
Recovery | Average harness force < 4.5% bw over any 1-second period | Average harness force < 4.5% bw over any 1-second period | |
Harness-affected |
None of above |
None of above |
|
Slip outcome (total n = 67 for gait; and n = 60 for sit-to-stand) | Single-step fall | 9 or [9/(9+4+44)=16%] | 9 or [9/(9+3+32)=20%] |
Multi-step fall | 4 or [4/(9+4+44)=7%] | 3 or [3/(9+3+32)=7%] | |
Recovery | 44 or [44/(9+4+44)=77%] | 32 or [3/(9+3+32)=73%] | |
Harness-affected | 5 | 6 | |
Excluded* | 5 | 10 |
body weight
the exclusive criteria include missing data or trigging problem..