ANFIS	Adaptive network-based fuzzy inference system
AP	Anterior–posterior
AUC	Area under curve
BA	Bland–Altman
BM	Multi-sensor biomechanical model
CEA	95% confidence ellipse area
CoG	Center of gravity
CoM	Center of mass
CoP	Center of pressure
DL-EC	Double leg—eyes closed
DL-EO	Double leg—eyes open
EC	Eyes closed
EC-Firm	Eyes closed—firm platform
EC-Foam	Eyes closed—foam platform
EC-SR	Eyes closed—sway-referenced platform
EO	Eyes open
EO-Firm	Eyes open—firm platform
EO-Foam	Eyes open—foam platform
EO-LB	Eyes open—leaning backward
EO-LF	Eyes open—leaning forward
EO-LL	Eyes open—left leaning
EO-RL	Eyes open—right leaning
EO-SR	Eyes open—sway-referenced platform
ER	Error ratio
Free-EO	Free sway—eyes open
GA	Genetic algorithm
ICC	Intraclass correlation coefficient
IMU	Inertial measurement unit
LP	Low-pass
MAPE	Mean absolute percentage error
mCTSIB	Modified Clinical Test of Sensory Interaction on Balance
ML	Mediolateral
MS-L	Monopodalic stance on the left leg
MS-R	Monopodalic stance on the right leg
MVELO	Mean sway velocity
NN	Neural network
NS	Not specified
OMC	Optoelectronic motion capture
PB	Passing–Bablok
PCC	Pearson correlation coefficient
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
RDIST	Range of the resultant distance
RMS-DIST	Root mean square of the resultant distance
RMSE	Root mean square error
SCC	Spearman correlation coefficient
SDI	Strapdown integration
SL-EO	Single leg—eyes open
SOT	Sensory Organization Test
SRV-Firm	Sway-referenced visual surround—firm platform
SRV-SR	Sway-referenced visual surround—sway-referenced platform
TOTEX	Total path length