Gait stride intervals for a patient with Parkinson's Disease



These data are from the file pd5-si.txt in the ‘gait in aging and disease’ database of PhysioBank, which is a large collection of physiologic signals maintained as a public service at by NIH's National Center for Research Resources. The following quote from this Web site describes how the stride intervals were obtained. Subjects walked continuously on level ground around an obstacle-free path. The stride interval was measured using ultra-thin, force sensitive resistors placed inside the shoe. The analog force signal was sampled at 300 Hz with a 12 bit A/D converter, using an ambulatory, ankle-worn microcomputer that also recorded the data. Subsequently, the time between foot-strikes was automatically computed. The method for determining the stride interval is a modification of a previously validated method that has been shown to agree with force-platform measures, a ‘gold’ standard.

Data were collected from the healthy subjects as they walked in a roughly circular path for 15 minutes, and from the subjects with Parkinson's disease as they walked for 6 minutes up and down a long hallway.

See Also

beamchaos, ecgrr, eegduke, lorenz.



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