The ActiGraph , also known as an activity monitor, detects activity by sensing
motion via an internal accelerometer.

This small lightweight single axis activity-measuring instrument can be worn on
the wrist, waist, or ankle to record physical activity.

The ActiGraph product line has an excellent reputation based on demonstrated
reliability, accuracy, and technical support. The product line has been the baseline
for many studies and is considered the 'gold standard' for the industry in the Sports
and Exercise Science market. One of the great advantages to using the ActiGraph
is that it is a shelf item, which means that no research is needed. There have been
many validation studies done in support of the ActiGraph .

Some uses of the ActiGraph include the study of circadian rhythms, estimation of
energy expenditure, assessment of athletic and rehabilitative programs, sleep research,
and time and motion studies.

Benefits include
· Monitors free-ranging individuals during the course of normal activity.
· Daily activity profile
· Percent of time spent at different activity levels
· Peak performance
· Time spent resting
· Maximum duration of continuous activity