Table 1.
Results of analysis of variance of transspinal evoked potential recruitment curve for each muscle
| F Ratio | df | P Value | F Ratio | df | P Value | ||
|---|---|---|---|---|---|---|---|
| L-SOL | L-MH | ||||||
| Protocol | 61.7 | 3, 30 | <0.001 | Protocol | 14.9 | 3, 30 | <0.001 |
| Intensity | 21.4 | 31, 310 | <0.001 | Intensity | 96.0 | 38, 380 | <0.001 |
| Protocol × intensity | 4.48 | 93, 303 | <0.001 | Protocol × intensity | 3.78 | 114, 248 | <0.001 |
| R-SOL | R-MH | ||||||
| Protocol | 23.7 | 3, 30 | <0.001 | Protocol | 22.0 | 3, 30 | <0.001 |
| Intensity | 85.4 | 26, 260 | <0.001 | Intensity | 131 | 39, 390 | <0.001 |
| Protocol × intensity | 4.51 | 78, 328 | <0.001 | Protocol × intensity | 6.35 | 117, 241 | <0.001 |
| L-MG | L-RF | ||||||
| Protocol | 14.4 | 3, 18 | <0.001 | Protocol | 13.9 | 3, 27 | <0.001 |
| Intensity | 52.8 | 30, 180 | <0.001 | Intensity | 36.4 | 31, 279 | <0.001 |
| Protocol × intensity | 4.29 | 90, 123 | <0.001 | Protocol × intensity | 2.17 | 93, 236 | <0.001 |
| R-MG | R-RF | ||||||
| Protocol | 15.2 | 3, 30 | <0.001 | Protocol | 9.76 | 3, 21 | <0.001 |
| Intensity | 76.2 | 22, 220 | <0.001 | Intensity | 36.1 | 36, 252 | <0.001 |
| Protocol × intensity | 5.17 | 66, 295 | <0.001 | Protocol × intensity | 2.60 | 108, 245 | <0.001 |
| L-PL | L-GRC | ||||||
| Protocol | 17.6 | 3, 30 | <0.001 | Protocol | 19.6 | 3, 27 | <0.001 |
| Intensity | 65.1 | 31, 310 | <0.001 | Intensity | 107 | 33, 297 | <0.001 |
| Protocol × intensity | 2.66 | 93, 275 | <0.001 | Protocol × intensity | 10.7 | 99, 211 | <0.001 |
| R-PL | R-GRC | ||||||
| Protocol | 14.2 | 3, 27 | <0.001 | Protocol | 19.0 | 3, 27 | <0.001 |
| Intensity | 78.0 | 26, 234 | <0.001 | Intensity | 158 | 36, 324 | <0.001 |
| Protocol × intensity | 3.92 | 78, 258 | <0.001 | Protocol × intensity | 7.51 | 108, 294 | <0.001 |
| L-TA | L-VL | ||||||
| Protocol | 17.7 | 3, 30 | <0.001 | Protocol | 4.08 | 3, 18 | 0.02 |
| Intensity | 60.9 | 31, 310 | <0.001 | Intensity | 28.7 | 33, 198 | <0.001 |
| Protocol × intensity | 1.53 | 93, 188 | 0.007 | Protocol × intensity | 1.91 | 99, 195 | <0.001 |
| R-TA | R-VL | ||||||
| Protocol | 11.6 | 3, 27 | <0.001 | Protocol | 9.50 | 3, 21 | <0.001 |
| Intensity | 48.5 | 44, 396 | <0.001 | Intensity | 41.9 | 29, 203 | <0.001 |
| Protocol × intensity | 1.34 | 132, 129 | 0.05 | Protocol × intensity | 3.26 | 87, 118 | <0.001 |
Two-way repeated-measures mixed-effects model analysis with participants as random factor was conducted in each muscle to examine the effect of protocol and stimulation intensity factors (fixed) on transspinal evoked potential (TEP) recruitment curve. The analysis of variance table of the fixed effects shows the F ratio, degrees of freedom (df), and P value separately for each muscle. GRC, gracilis; L, left; MG, medial gastrocnemius; MH, medial hamstring; PL, peroneus longus; R, right; RF, rectus femoris; SOL, soleus; TA, tibialis anterior; VL, vastus lateralis. Significant differences for P < 0.05.