Variable	Description	Unit	Example Value
Subject	Unique athlete identifier	-	HRG_Z1
Group	Phenotype group (HRG/MRG/LRG)	-	HRG
RMS_pre	EMG amplitude pre-intervention	z-score	0.15
RMS_post	EMG amplitude post-intervention	z-score	0.92
MF_pre	Median frequency pre-intervention	z-score	-0.23
MF_post	Median frequency post-intervention	z-score	0.41
Delta_EMG	% change in EMG amplitude	%	21.14
EEG_SUM	EEG summary index	z-score	2.16
SILA_SUM	Strength index (mean of two loads)	kg	258.74