Table 2.
Average (std) feedback delay and critical delay for each subject, and average error between experimental and model data for upper and lower body angle (deg) and velocity (deg/s).
| Subject | Delay (ms) | Critical delay (ms) | θ1 error (deg) | θ2 error (deg) | θ̇1 error (deg/s) | θ̇2 error (deg/s) | Quantitative performance (deg/s) | Qualitative performance |
|---|---|---|---|---|---|---|---|---|
| 1 | 22(9) | 45(6) | 1.2(0.4) | 0.7(0.3) | 3.5(0.9) | 2.6(1.0) | 5.4 (1.0) | Average |
| 2 | 13(4) | 62(19) | 1.3(0.2) | 0.9(0.2) | 4.3(0.9) | 2.7(0.5) | 6.5 (0.3) | Average |
| 3 | 17(5) | 83(29) | 0.6(0.4) | 0.5(0.3) | 1.5(0.5) | 1.5(0.3) | 3.6 (0.4) | Good |
| 4 | 25(13) | 36(18) | 1.9(0.4) | 2.2(0.3) | 8.1(0.9) | 6.0(0.7) | 7.2 (1.1) | Bad |
| 5 | 32(7) | 82(33) | 1.8(0.7) | 4.4(1.1) | 5.7(1.2) | 8.1(1.9) | 11.2 (2.0) | Bad |
| 6 | 27(7) | 90(18) | 1.3(0.4) | 0.9(0.2) | 2.7(0.6) | 2.7(0.6) | 5.0 (0.3) | Good |
| 7 | 22(7) | 53(4) | 0.5(0.3) | 0.9(0.3) | 1.7(0.3) | 2.8(0.4) | 4.4 (0.4) | Good |
Error represents the average error per sampling point during the 7 s trial. Quantitative performance represents the average lower body angular velocity (deg/s) during the trial from experimental data. Table values represent the average across five trials with standard deviations in parentheses.