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. Author manuscript; available in PMC: 2021 May 14.
Published in final edited form as: Aging Clin Exp Res. 2019 Jul 18;32(5):893–905. doi: 10.1007/s40520-019-01268-6

Figure 5.

Figure 5.

Pre-trip adaptation in a) proactive stability, b) toe clearance, and c) the relationship between proactive stability and the center of mass (COM) position and velocity relative to the base of support (relative PCOM and relative VCOM respectively) (proactive stability = 0.015+1.097*relative PCOM+5.269*relative VCOM). Proactive stability was defined as the shortest distance of the instantaneous COM state (position and velocity) from a theoretically predicted threshold for backward or forward loss of balance. Pre-trip, a larger stability value indicated a more unstable initial COM state before obstacle-hit.