Table 2. Handgrip strength and digital mobility outcome values at hospital admission and discharge.
| Admission | Discharge | |||||
| n | Mean ± SD | n | Mean ± SD | |||
| SD: standard deviation; SPPB: short physical performance battery. | ||||||
| Handgrip strength, kg Mobility-related activity |
Digital mobility outcome [unit] | 59 | 19.6 ± 7.8 | 47 | 19.4 ± 8.6 | |
| Static balance (based on SPPB semi-tandem stance position test performance) |
Area, m2/s5 | 46 | 0.0023 ± 0.0017 | 42 | 0.0027 ± 0.0035 | |
| Path, m/s2 | 46 | 2.30 ± 1.09 | 42 | 2.42 ± 1.27 | ||
| Acceleration, cm/s2 | 46 | 1.61 ± 0.56 | 42 | 1.68 ± 0.97 | ||
| Jerk, cm/s³ | 46 | 0.30 ± 0.31 | 42 | 0.32 ± 0.35 | ||
| Mean frequency, Hz | 46 | 2.03 + 0.35 | 42 | 2.04 ± 0.30 | ||
| Sit-to-stand (based on Timed Up and Go test performance) |
Total duration, s | 22 | 2.49 ± 0.77 | 26 | 2.57 ± 0.88 | |
| Total trunk flexion, ° | 22 | 40.93 ± 13.39 | 26 | 36.80 ± 12.55 | ||
| Maximum trunk flexion velocity, °/s | 22 | 129.91 ± 31.17 | 26 | 120.18 ± 43.75 | ||
| Maximum trunk extension velocity, °/s | 22 | 43.55 ± 15.02 | 26 | 42.00 ± 15.37 | ||
| Walking (based on SPPB 4-meter walk test performance) |
Gait speed, m/s | 52 | 0.48 ± 0.14 | 47 | 0.48 ± 0.11 | |
| Number of steps, n | 52 | 9.23 ± 3.25 | 47 | 9.02 ± 2.41 | ||
| Step-time, s | 52 | 0.72 ± 0.20 | 47 | 0.71 ± 0.16 | ||
| Step-time variability, SD (step time)/(m/s) | 52 | 0.25 ± 0.45 | 47 | 0.23 ± 0.30 | ||
Stance time/swing time ratio, 
|
52 | 3.90 ± 1.62 | 47 | 3.66 ± 1.00 | ||
| Double support time, s/(m/s) | 52 | 0.46 ± 0.44 | 47 | 0.40 ± 0.20 | ||
| Double support time variability, SD (double support time)/(m/s) | 52 | 0.14 ± 0.31 | 47 | 0.09 ± 0.11 | ||
| Asymmetry index α, α/(m/s) | 47 | 0.20 ± 0.30 | 41 | 0.15 ± 0.17 | ||