Units of Measure Continued

Power

The rate at which work is performed, calculated as Power = Work / Time.

Watt

A unit of power, where 1 W = 6.12 kpm.

Horsepower

A unit of power equivalent to 745.7 W or 10.69 kcal.

Kilopond-meter

A measure of work where 1 kpm = 0.163 W.

Work measurement

To calculate power, we need to know the work produced and the time taken.

Ergometry

The measurement of work output.

Ergometer

A device used to measure work.

Bench step ergometer

An ergometer used for measuring work output during step exercises.

Cycle ergometer

A stationary cycle that allows accurate measurement of work performed.

Arm ergometer

An ergometer used to measure upper body work output.

Treadmill

An ergometric device used for measuring work while walking or running.

Total work produced calculation

To calculate, multiply the force produced by the distance traveled.

1 watt

1 watt = 0.0569 per minute or 0.86 kcal per hour.

Cycle Ergometer work example

Using a 1.5 kp resistance with a distance of 6 m per revolution for 60 revolutions per minute for 10 minutes.

Conversion factor for kcal

1 kcal = 4186 J.