Walking (2) vitesse (1) satellite (1) pente (1) champ (1) énergie (1) coût (1) communication (1) adulte (1) altitude (1) Communications (1) Variation (1) Atmospheric pressure--Measurement (1) Global Positioning System (1) Variations (1) Speed (1) Power resources (1) Power (Mechanics) (1) Navigation (1) Measurement (1) Human beings (1) Gait in humans (1) Forecasting (1) Force and energy (1) Cost (1) Biomechanics (1) Walking speed (1) Measurement (1) Movements (1) Speed (1)