Table 5.
Variability of synergies.
| References | Between strides | Between days | ||
|---|---|---|---|---|
| VAF1 (%) | Structure | VAF1 (%) | Structure | |
| Shuman et al. (2016) |
Mean std:
CP = 5.0% (range 2.5–7.5%); TD = 4.9% (range 3.7–6.5%) Mean max difference: CP = 19.1%; TD = 18.2% |
- |
Day 1:
CP = 77.4 ± 5.3%; TD = 68.4 ± 5.0% Day 2: CP = 76.9 ± 4.8%; TD = 68.4 ± 4.7% |
- |
| Steele et al. (2019) | - | - |
Average change day 1 to day 2:
4.24 ± 3.09% |
CS (day 1 vs. day 2):
2 syn: w = 0.89 ± 0.10; act = 0.93 ± 0.06 3 syn: w = 0.83 ± 0.11; act = 0.91 ± 0.06 4 syn: w = 0.90 ± 0.08; act = 0.92 ± 0.05 |
| Kim Y. et al. (2018) | - |
Normalized cluster number* for VAF >80%: CP = 0.38 ± 0.06; TD = 0.33 ± 0.04 >85%: CP = 0.37 ± 0.07; TD = 0.31 ± 0.05 >90%: CP = 0.41 ± 0.05; TD = 0.34 ± 0.08 >95%: CP = 0.39 ± 0.05; TD = 0.34 ± 0.02 |
- | - |
CP, cerebral palsy; TD, typically developing; VAF1, variance accounted for by one synergy (%); std, standard deviation; max, maximum; CS, cosine similarity; syn, synergies; w, weights; act, activations.