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In a recent paper  Borghese et al., demonstrated that 4D pelvis-thigh-shank-foot cyclograms of human locomotion are surprisingly planar, if the segmental elevation angles rather than the traditional inter-segmental angles are used. In this work, we demonstrate that the planarity of elevation angle cyclograms is preserved even for slope walking, within a 15 degree range.
Sun, H., Goswami, A., Metaxas, D., & Bruckner, J. (1999). Cyclogram Planarity is Preserved in Upward Slope Walking. Retrieved from https://repository.upenn.edu/hms/88
Date Posted: 04 September 2007