Hardie plank siding is a premium brand of cement board siding (also known as fiber cement board siding) produced by the James Hardie Company.ardie plank can be purchased with a wood-grain look, a plain smooth look or a stucco type finish. Hardie plank also comes in simulated cedar shingle planks.
activity duration. Period (hours, days, weeks) required to complete an activity. Activities with zero duration are called milestones.
Absolute intensity. The amount of energy used by the body per minute of activity. See Measuring Physical Activity for more. Aerobic physical activity. Activity in which the body's large muscles move in a rhythmic manner for a sustained period of time.Aerobic activity, also called endurance activity, improves cardiorespiratory fitness.Examples include walking, running, and swimming, and bicycling.ctivity in which the body's large muscles move in a rhythmic manner for a sustained period of time. Aerobic activity, also called endurance activity, improves cardiorespiratory fitness. Examples include walking, running, and swimming, and bicycling.