Table 5.
Intermuscular time-frequency coherence results after NMES intervention.
| Muscle pairs | frequency band | Weighted squats | Fake stimulation | Real stimulation | F-value | P-value | η² |
|---|---|---|---|---|---|---|---|
| BB-PM | α | 0.032 ± 0.01 | 0.034 ± 0.01 | 0.040 ± 0.01 | 1.67 | 0.20 | 0.055 |
| β | 0.034 ± 0.01 | 0.032 ± 0.01 | 0.042 ± 0.01bc | 5.85 | 0.003 | 0.170 | |
| γ | 0.033 ± 0.01 | 0.034 ± 0.01 | 0.033 ± 0.01 | 0.83 | 0.44 | 0.028 | |
| BRD-LD | α | 0.033 ± 0.01 | 0.026 ± 0.01 | 0.038 ± 0.01bc | 4.95 | 0.001 | 0.148 |
| β | 0.032 ± 0.01 | 0.033 ± 0.01 | 0.036 ± 0.01 | 1.44 | 0.25 | 0.048 | |
| γ | 0.025 ± 0.01 | 0.032 ± 0.01 | 0.036 ± 0.01 | 1.62 | 0.21 | 0.054 | |
| TB-PM | α | 0.029 ± 0.01 | 0.031 ± 0.01 | 0.036 ± 0.01 | 1.38 | 0.27 | 0.046 |
| β | 0.031 ± 0.01 | 0.028 ± 0.01 | 0.036 ± 0.01bc | 4.60 | 0.004 | 0.139 | |
| γ | 0.032 ± 0.01 | 0.034 ± 0.01 | 0.035 ± 0.01 | 0.70 | 0.51 | 0.024 | |
| BF-ABS | α | 0.034 ± 0.01 | 0.036 ± 0.02 | 0.039 ± 0.01 | 1.24 | 0.30 | 0.042 |
| β | 0.032 ± 0.01 | 0.029 ± 0.01 | 0.038 ± 0.01bc | 5.85 | 0.001 | 0.170 | |
| γ | 0.031 ± 0.01 | 0.034 ± 0.01 | 0.036 ± 0.01 | 1.08 | 0.35 | 0.037 | |
| GM-ABS | α | 0.034 ± 0.01 | 0.037 ± 0.01 | 0.041 ± 0.01 | 1.60 | 0.22 | 0.053 |
| β | 0.035 ± 0.01 | 0.038 ± 0.01 | 0.040 ± 0.01 | 1.25 | 0.30 | 0.042 | |
| γ | 0.025 ± 0.01 | 0.026 ± 0.02 | 0.033 ± 0.01bc | 5.10 | 0.003 | 0.152 | |
| GM-LD | α | 0.031 ± 0.01 | 0.033 ± 0.01 | 0.039 ± 0.01bc | 6.50 | 0.005 | 0.186 |
| β | 0.034 ± 0.01 | 0.038 ± 0.01 | 0.040 ± 0.01 | 1.20 | 0.31 | 0.040 | |
| γ | 0.032 ± 0.01 | 0.036 ± 0.01 | 0.039 ± 0.01 | 1.40 | 0.26 | 0.047 | |
| VM-LD | α | 0.029 ± 0.01 | 0.034 ± 0.01 | 0.039 ± 0.01bc | 4.80 | 0.003 | 0.144 |
| β | 0.034 ± 0.01 | 0.038 ± 0.01 | 0.041 ± 0.01 | 1.55 | 0.23 | 0.052 | |
| γ | 0.035 ± 0.01 | 0.039 ± 0.01 | 0.042 ± 0.01 | 1.40 | 0.26 | 0.047 | |
| GM-PM | α | 0.033 ± 0.01 | 0.036 ± 0.01 | 0.040 ± 0.01 | 1.35 | 0.27 | 0.045 |
| β | 0.022 ± 0.01 | 0.026 ± 0.01 | 0.035 ± 0.01bc | 4.95 | 0.003 | 0.148 | |
| γ | 0.030 ± 0.01 | 0.033 ± 0.01 | 0.034 ± 0.01 | 1.15 | 0.13 | 0.039 |
b indicates a significant difference between weighted squats and the real stimulus; c indicates a significant difference between the sham stimulus and the real stimulus. P< 0.05 indicates a significant difference. GLM, gluteus maximus; VM, vastus medialis; VL, vastus lateralis; BF, biceps femoris; GM, medial gastrocnemius; GL, lateral gastrocnemius; ABS, rectus abdominis; LD, latissimus dorsi; TRAP, trapezius; PM, pectoralis major; DEL, deltoid; BB, biceps brachii; TB, triceps brachii; BRD, brachioradialis. Statistical significance for intermuscular time-frequency coherence outcomes was interpreted after Benjamini–Hochberg false discovery rate correction across the tested muscle-pair and frequency-band variables.