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A Method for Calculating the Probability of Tripping While Walking by Russell Best; Rezaul Begg is a Medicine article available to read on EtoBox.
What is A Method for Calculating the Probability of Tripping While Walking about?
Despite tripping being one of the frequently reported causes of falls, currently there is no method of quantifying the probability of an individual's foot contacting obstacles during gait. This paper describes a statistical modeling technique based on variability in minimum toe clearance (MTC) data during treadmill walking to estimate the probability of the toe contacting an obstacle. MTC data were calculated from two foot markers and using a 2D geometric model of the distal end of the foot. Probability of tripping (PT) was calculated by modeling and then integrating the MTC sample distribution. Results from a young male subject continuously walking for 1 hour show the MTC distribution is not normally distributed with mean=1.03 cm, S.D.=0.25 cm, skew=1.01 and kurtosis=3.47. For this distribution, PT for an unseen 0.2 cm high obstacle is calculated to be 1 in every 10,363 strides. Without skew- and kurtosis-modeling PT reduced to 1 in every 1901 strides, which highlights the importance of skew and kurtosis-modeling for PT estimation. Predicted PT is seen to increase with increasing obstacle heights (e.g. PT for an unseen 0.5 cm obstacle is 1 in 95 strides and PT for an unseen 1.0 cm
Who reads A Method for Calculating the Probability of Tripping While Walking?
It is typically read by researchers, students, and practitioners in Medicine.
- Author
- Russell Best; Rezaul Begg
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0021-9290)
- Published
- 2008
- Language
- EN
- Field
- Medicine (Health Sciences)