Table 3. Peak normalized wavelet intensity and corresponding peak frequency band during Phase 1 and Phase 2.

Muscle	Phase 1		Phase 2
	Elite	Amateur	Elite	Amateur
Rectus Femoris	0.011 ± 0.006 49.90 [37.71, 111.88]	0.009 ± 0.002 62.09 [56.00, 69.66]	0.012 ± 0.002 37.71 [37.71, 37.71]	0.015 ± 0.006 49.90 [37.71, 62.09]
Vastus Lateralis	0.013 ± 0.010 37.71 [37.71, 37.71]	0.027 ± 0.039 37.71 [37.71, 49.90]	0.017 ± 0.009 37.71 [37.71, 49.90]	0.019 ± 0.007 37.71 [37.71, 49.90]
Vastus Medialis	0.012 ± 0.010 62.09 [49.90, 62.09]	0.012 ± 0.004 37.71 [37.71, 49.90]	0.028 ± 0.030 37.71 [37.71, 49.90]	0.015 ± 0.008 37.71 [37.71, 37.71]
Biceps Femoris	0.016 ± 0.014 37.71 [37.71, 37.71]	0.007 ± 0.001 37.71 [37.71, 37.71]	0.019 ± 0.021 62.09 [49.90, 62.09]	0.018 ± 0.008 37.71 [37.71, 49.90]
Tibialis Anterior	0.008 ± 0.004 37.71 [37.71, 62.09]	0.009 ± 0.002 62.09 [37.71, 95.28]	0.012 ± 0.008 37.71 [37.71, 62.09]	0.015 ± 0.007 37.71 [37.71, 37.71]
Medial Gastrocnemius	0.014 ± 0.010 37.71 [37.71, 37.71]	0.012 ± 0.007 37.71 [37.71, 77.22]	0.024 ± 0.017 37.71 [37.71, 37.71]	0.019 ± 0.015 37.71 [37.71, 49.90]
Lateral Gastrocnemius	0.024 ± 0.032 37.71 [37.71, 49.90]	0.014 ± 0.007 37.71 [37.71, 128.48]	0.016 ± 0.017 37.71 [37.71, 37.71]	0.026 ± 0.025 37.71 [28.50, 37.71]

Values in the first line of each cell indicate participant-level peak normalized wavelet intensity, presented as mean ± SD. Values in the second line indicate the corresponding participant-level peak frequency band, presented as median [interquartile range] in Hz. For each participant, muscle, and phase, the peak value was first identified from the participant-level mean 11 × 101 time-frequency matrix, and group summaries were then calculated from these participant-level peak values. These values are descriptive summaries; formal between-group inference was based on PCA-derived score trajectories and SPM1D analyses.