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1.1. What is the StepWatch Activity Monitor system?
The StepWatch Activity Monitor (SAM) system is a means of accurately measuring ambulatory activity (walking, running, etc.) and logging the data for up to two months per session. Specifically, the StepWatch counts steps per unit time (typically steps/minute) and stores that information in memory for download. It is worn at the ankle using straps or a cuff. Most users quickly forget that they are wearing it.
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1.2. How is the StepWatch different from a pedometer?
The SAM differs from a pedometer in several ways. First, the SAM is highly accurate for all kinds of gait and walking styles. Reported accuracies in peer-reviewed publications consistently report accuracy of greater than 98%. (See our bibliography page.) Most pedometers report total steps since last reset and rely on the wearer to record this information. The SAM records steps per unit time (typically steps/minute) for long periods of time (up to 2 months when recording every minute) and requires no effort by the wearer to record this information. Data can be easily filtered (i.e. times selected for inclusion in analysis). The software automatically performs rich analyses of the data which can be tracked within the database, exported for use in other software, and/or printed as reports.
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1.3. How often do I need to change the batteries?
Never. The StepWatch is a sealed unit. Its internal lithium ion battery will last approximately 7 years with constant use. It can then be returned to Cyma for refurbishing at which point the battery will be replaced and the unit will be recalibrated.
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1.4. Does the StepWatch count both steps on both legs?
The StepWatch counts steps (or technically 'strides') on one leg - the leg on which it is worn.
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1.5. Can the StepWatch count steps on a subject who shuffles?
Yes. The StepWatch is programmable and when set to higher sensitivity it will accurately count steps even when the subject has a very gentle shuffling gait.
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