Bodies in motion.

I would like to address some inaccuracies published in the recent JRRD article " Bodies in motion: Monitoring daily activity and exercise with motion sensors in people with chronic pulmonary disease " The following corrections should be noted: 1. The StepWatch is available from Cyma, not Prosthetics Research Study. 2. Software and hardware are available for both PC and Macintosh platforms. The software handles programming and downloading of the StepWatch, and also data filtering , analysis, and reporting. It also provides a database that allows longitudinal tracking and individ-ual/group comparisons. 3. The current costs of the system are $525 per monitor and $1,600 for the docking station/software/tech-nical support. One docking station is needed per site. 4. Validation studies have been performed on many additional groups. Populations for which results have been published in full manuscript or abstract form include adults with dementia, adults with diabetes, adults with total hip replacement, adults who have sustained hip fractures, adults wearing total contact casts, men with diabetes and peripheral neur-opathy, adults and children with no disease or disability, children with Duchenne's muscular dystrophy, children who are obese, and horses. Unpublished validation studies have been performed with various additional populations. Additionally, the authors failed to note that the StepWatch is 98% accurate for monitoring virtually any type of gait, which Cyma considers to be its greatest strength. The accuracy has been confirmed by numerous independent studies. I was disappointed that the authors did not cite any literature pertinent to the StepWatch. It is worth mentioning that the original descriptive paper on the instrument The technology has since been further refined and improved under funding from the National Institutes of Health. I appreciate the authors' cooperation in this matter and thank you for your attention to these corrections. 58) issue of JRRD. These errors were in the article " Bodies in motion: Monitoring daily activity and exercise with motion sensors in people with chronic pulmonary disease " in reference to the pricing and data collection days of the Actigraph (formerly CSA Actigraph), MTI Health Services, Fort Walton Beach, Florida. In the article, the first error is that the price is listed as $1,500 for monitor , interface unit, and software. This published price is almost twice the actual cost of $800 for monitor, interface unit, and software. I am unaware of where the submitted references to this price came from, but MIT Health Services has …