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Human power generation in space Rutgers symposium on lunar settlement

Introduction

Assuming 40% of a 2000 Calorie/day diet is used for physical activity, 
3.35 MJ of energy/day is used to perform activities.
Approximate mechanical energy performed during some physical activities:
Walking/Running (0.49 J/kg*step)
Stair climbing (1.96 J/kg*step)
Cycling (88.2 J/rev)
Lifting (9.8 J/kg*m)