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Table 2 Change rate of alpha-band power (Δ α) and beta-band power (Δ β) from early to middle and from early to late pedal stages

From: Resistance-induced brain activity changes during cycle ergometer exercises

Inter-cerebral pairs Δ α Δ β
Middle - Early Late - Early Middle - Early Late - Early
C3
Low-intensity 0.344 (0.836) 0.162 (0.456) −0.027 (0.656) 0.035 (0.557)
High-intensity 0.259 (0.616) 0.466 (0.173) 0.019 (0.378) 0.415 (1.257)
p-value 0.5028 0.0113* 0.7041 0.1332
z-score −0.561 2.395 0.663 1.478
Effect size, ρ −0.125 0.536 0.148 0.331
P3
Low-intensity 0.244 (0.677) 0.115 (0.494) −0.077 (0.479) −0.038 (0.484)
High-intensity 0.124 (1.328) 0.422 (0.451) −0.1006 (0.333) 0.345 (0.775)
p-value 0.4667 0.0224* 0.5409 0.2442
z-score 0.663 2.293 0.357 1.172
Effect size, ρ 0.148 0.513 0.080 0.262
  1. Δα and Δβ are the change rates in the alpha-band power (α) and beta-band power (β) between pedal stages. For example, Δα from early to middle stages is defined as (αmiddle - αearly) / αearly. The change rate is represented as median (interquartile range). The paired permutation test is used to compare the distributions of change rates between low- and high-resistance exercises, where the mark * indicates a significance level of p < 0.05. The effect size is reported as the correlation coefficient ρ based on the Wilcoxon signed-rank test