2013
DOI: 10.1098/rspb.2013.0700
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Humans exploit the biomechanics of bipedal gait during visually guided walking over complex terrain

Abstract: How do humans achieve such remarkable energetic efficiency when walking over complex terrain such as a rocky trail? Recent research in biomechanics suggests that the efficiency of human walking over flat, obstacle-free terrain derives from the ability to exploit the physical dynamics of our bodies. In this study, we investigated whether this principle also applies to visually guided walking over complex terrain. We found that when humans can see the immediate foreground as little as two step lengths ahead, the… Show more

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Cited by 67 publications
(79 citation statements)
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References 48 publications
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“…Thus, subjects were able to maintain stepping accuracy in this condition but only by trading off on walking speed. This trade-off is consistent with behavior observed while attempting to avoid stepping on obstacles under analogous visibility constraints (43,44).…”
Section: ])supporting
confidence: 83%
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“…Thus, subjects were able to maintain stepping accuracy in this condition but only by trading off on walking speed. This trade-off is consistent with behavior observed while attempting to avoid stepping on obstacles under analogous visibility constraints (43,44).…”
Section: ])supporting
confidence: 83%
“…Although the findings of Matthis and Fajen (43,44) and Matthis, Barton, and Fajen (46) are consistent with the critical control phase hypothesis, they are not sufficient to conclude that visual information is primarily used during the latter part of the preceding step because the two components of the critical phase hypothesis were tested in separate experiments. The first aim of this study was to provide a direct test by combining the manipulations used in the previous studies in a single experimental task.…”
Section: Resultsmentioning
confidence: 82%
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“…Knowledge of the height of ground contact is an important input for locomotor control, which is often provided via visual feedback information. When visual information regarding ground contact is not available, adjustments to ground clearance are made to increase the 'safety factor' (Matthis and Fajen, 2014;Timmis and Buckley, 2012), although there is a minimum level of visual information below which falls are highly likely (Matthis and Fajen, 2013).…”
Section: Vision and Stabilitymentioning
confidence: 99%