Table 1.
Discharge rate, coefficient of variation for ISI, and number of motor units decomposed from EMG for all subjects
| Subject ID | Age, yr | Discharge Rate, pps | Coefficient of Variation for ISI, % | No. of MUs Decomposed |
|---|---|---|---|---|
| S01 | 24 | 12.3 ± 1.1 | 18.0 ± 6.3 | 11 |
| S02 | 25 | 13.2 ± 1.1 | 26.4 ± 7.4 | 12 |
| S03 | 29 | 11.8 ± 1.2 | 16.3 ± 4.4 | 24 |
| S04 | 29 | 9.4 ± 0.8 | 12.4 ± 2.2 | 19 |
| S05 | 30 | 9.9 ± 1.2 | 11.7 ± 4.2 | 18 |
| S06 | 31 | 11.7 ± 1.2 | 16.2 ± 4.1 | 15 |
| S07 | 31 | 11.1 ± 1.0 | 15.9 ± 4.5 | 22 |
| S08 | 34 | 11.3 ± 1.2 | 21.2 ± 3.9 | 14 |
| S09 | 35 | 12.2 ± 0.9 | 22.4 ± 8.5 | 14 |
| S10 | 40 | 11.4 ± 1.2 | 16.5 ± 5.3 | 16 |
| S11 | 46 | 10.2 ± 1.2 | 17.7 ± 6.7 | 27 |
| S12 | 51 | 11.7 ± 0.9 | 16.0 ± 2.8 | 19 |
| S13 | 51 | 10.8 ± 1.7 | 18.2 ± 2.3 | 16 |
| S14 | 52 | 10.3 ± 1.1 | 19.2 ± 2.7 | 20 |
| S15 | 63 | 9.4 ± 1.0 | 15.5 ± 3.3 | 17 |
| S16 | 68 | 13.4 ± 1.5 | 14.4 ± 2.3 | 25 |
| S17 | 69 | 10.7 ± 1.1 | 14.6 ± 1.5 | 15 |
| S18 | 72 | 10.4 ± 1.5 | 18.8 ± 5.8 | 21 |
| S19 | 74 | 11.7 ± 1.8 | 30.7 ± 5.4 | 13 |
| S20 | 75 | 11.1 ± 1.4 | 25.2 ± 3.3 | 18 |
| Average ± SD | 46.4 ± 18.1 | 11.2 ± 1.1 | 18.4 ± 4.8 | 18.0 ± 4.3 |
Discharge rates and coefficients of variation for interspike interval (ISI) are presented as average ± SD across the motor neuron pool for each subject, listed in order of increasing age. Number of decomposed motor units (MUs) is the total number for each subject.