| BoS | Base of support |
| CON | Control condition (no display) |
| CoM | Centre of mass |
| g | Gravitational acceleration (9.81 m/s2) |
| HHD | Hand-held display |
| HMD | Head-mounted display |
| L | Reference leg length |
| m | Metres |
| ms | Milliseconds |
| N | Newton |
| NASA | National Aeronautics and Space Administration |
| PCoM | Centre of mass position |
| s | Seconds |
| TD | Touchdown |
| VCoM | Centre of mass velocity |
| XCoM | Extrapolated centre of mass |
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