AC	Acceptable Classification	$\alpha$	biomechanical index related to $LOG{C}_{C,S}$
AUC	Area Under Curve	$\beta$	observation angle by the judges
ES	Effect Size	$\gamma$	biomechanical index related to SC
FN	Frame Number	$\delta$	biomechanical index related to $LOG{C}_T$
FPR	False Positive Rate	$\Delta$	Difference between Lee and P in statistics
FR	Frame Rate	$ϵ$	overall synthetic gesture index
HSE	Heel Strike Event	$\zeta$	acceptable eye rotation
LAR	Least Angle Regression	$\eta$	fuzzy membership function of inertial sensor
Lee	Lee’s approach	$\theta$	output value step classification functions
LHE	Limit of Human Eye	$\kappa$	specific weight of biomechanical index
LOGC	Loss Of Ground Contact	$\lambda$	fuzzy membership function of Benchmark
$LOG{C}_B$	Loss Of Ground Contact timing Benchmark	$\mu$	biomechanical index related to S
$LOG{C}_{B,S}$	Loss Of Ground Contact timing Benchmark Sequence	$\rho$	biomechanical index related to SLR
$LOG{C}_{C,S}$	Loss Of Ground Contact Classification	$\sigma$	difference between $\eta$ and $\lambda$
$LOG{C}_T$	Loss Of Ground Contact Timing	$\tau$	percentage of acceptable classification
$LOG{C}_{T,S}$	Loss Of Ground Contact Timing Sequence	$\chi$	function binary classification
MAPA	Maximum AnteroPosterior Acceleration	A	Area of the polygon area in radar chart
MD	Mean Difference in LOGC timing assessment	D	Doubt step
NPVA	Negative Peak Vertical Acceleration	E	Threshold for LOGC assessment
NS	Number of Steps	H	Hedges’ g coefficient value
OT	Optimal Threshold	I	Illegal step
PB	Personal Best	L	Legal step
PPV	Predict Positive Value	P	Proposed approach
ROC	Receiver Operating Characteristic	S	Smoothness
SC	Step Cadence	$S_S$	Smoothness Sequence
$S{C}_S$	Step Cadence Sequence	d	length of judge’s field of view
SD	Standard Deviation	f	sample frequency of inertial sensor
SL	Step Length	h	distance of the judge from race line
SLR	Step Length Ratio	j	jerk of the anteroposterior linear movement
$SL{R}_S$	Step Lenght Ratio Sequence	$t_{max}$	temporal instant of MAPA
TOE	Toe Off Event	$t_{min}$	temporal instant of NPVA
TPR	True Positive Rate	$v_E$	mean speed entry time world championship
WC	Wrong Classification	$v_R$	mean speed world record 20 km men