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) Walking (1) Variations (1) Speed (1) Power resources (1) Power (Mechanics) (1) Measurement (1) Human beings (1) Forecasting (1) Force and energy (1) Cost (1) Biomechanics (1) Walking speed (1) Measurement (1) Speed (1) Models (1) adulte (1) corps (1)