Hello! I'm hoping someone here can answer a question for me... I've observed that when pedaling a bicycle, if the rider moves from seated to standing position while maintaining the exact same cadence (pedal revolutions per minute) and resistance, power output (as measured on a power meter) often decreases. My theory is that you add mass when you stand, and that alters the way power is produced - kind of like adding mass to one side of a fulcrum... Anyone care to weigh in on how shifting to standing position might change the dynamics of power output when pedaling a bicycle??