A simple method to choose the most representative stride and detect outliers

Morgan Sangeux, Julia Polak

Research output: Contribution to journalArticleResearchpeer-review

29 Citations (Scopus)


Kinematic data for gait analysis consists of joint angle curves plotted against percentages of the gait cycle. A typical gait analysis entails repeated measurement of the kinematic data. We present an automatic and computationally inexpensive method to choose the most representative curve and detect outliers amongst repeated curves. The method is based on the notion of depth, where the deepest curve is the equivalent to the median for univariate data. The method applies to single kinematic variable or multi-kinematic variables such as the gait profile. It is sensitive to both shape and position of the curves. A comparison with an existing statistical method is presented as well as an example on one patient s data.
Original languageEnglish
Pages (from-to)726 - 730
Number of pages5
JournalGait and Posture
Issue number2
Publication statusPublished - 2015

Cite this