Table 3 Determinants of \({{\varvec{A}}}_{1}\), \({{\varvec{A}}}_{2}\), and \({{\varvec{A}}}_{3}\) indicating stability in different cases
Air pressure of monoarticular muscles (MPa) | Air pressure of tri-articular muscles (MPa) | |||
|---|---|---|---|---|
0.0 | 0.3 | 0.4 | 0.5 | |
 0.0 | |A1| = 0 | − 0.68 | − 1.02 | − 1.37 |
|A2| = 0 | 0.63 | 1.28 | 2.17 | |
|A3| = 0 | − 0.35 | − 1.04 | − 2.32 | |
 0.3 | 1.68 | 0.99 | 0.65 | 0.31 |
2.81 | 0.52 | − 0.17 | − 0.66 | |
4.70 | 0.42 | −0.31 | − 0.51 | |
 0.4 | 1.82 | 1.13 | 0.80 | 0.45 |
3.30 | 0.76 | − 0.04 | − 0.64 | |
5.99 | 0.76 | − 0.26 | − 0.67 | |
 0.5 | 1.91 | 1.23 | 0.89 | 0.54 |
3.66 | 0.96 | 0.08 | − 0.60 | |
7.01 | 1.07 | − 0.19 | − 0.77 | |