Activity monitoring is an important consideration for a number of conditions associated with health maintenance in an aging population. For example, reduced bone mineral density (BMD) in the aging population puts this group at a higher risk of fall related fractures [1]. Bone density and bone health is in part dependent upon mechanical stimuli caused by everyday physical activity and loading [2]. The number of steps taken per day and walking velocity [3] are important parameters to consider when studying bone density as well as other health related conditions. However, there is a need for effective and efficient methods/protocols to ensure that representative daily activity data can be collected.

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