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.