Using Gait Variability to Predict Inter-individual Differences in Learning Rate of a Novel Obstacle Course

Ulman, Sophia; Ranganathan, Shyam; Queen, Robin M.; Srinivasan, Divya

doi:10.1007/s10439-019-02236-x

Cited by 12 publications

(5 citation statements)

References 40 publications

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“…Our results are also exciting because this portable device could also offer the possibility to study gait under more realistic situations, such as walking with self-regulated and variable gait speeds. It is well-accepted that motor variability can impact motor learning (Wu et al, 2014;Ulman et al, 2019), and walking on a treadmill is less variable compared to overground walking (Dingwell et al, 2001). Thus, having a device that can induce locomotor adaptation overground would help us gain more understanding about the relationship between variability and motor adaptation in walking.…”

Section: Study Implicationsmentioning

confidence: 99%

Motorized Shoes Induce Robust Sensorimotor Adaptation in Walking

Aucie

Zhang²,

Sargent

et al. 2020

Front. Neurosci.

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The motor system has the flexibility to update motor plans according to systematic changes in the environment or the body. This capacity is studied in the laboratory through sensorimotor adaptation paradigms imposing sustained and predictable motor demands specific to the task at hand. However, these studies are tied to the laboratory setting. Thus, we asked if a portable device could be used to elicit locomotor adaptation outside the laboratory. To this end, we tested the extent to which a pair of motorized shoes could induce similar locomotor adaptation to split-belt walking, which is a well-established sensorimotor adaptation paradigm in locomotion. We specifically compared the adaptation effects (i.e. after-effects) between two groups of young, healthy participants walking with the legs moving at different speeds by either a split-belt treadmill or a pair of motorized shoes. The speeds at which the legs moved in the splitbelt group was set by the belt speed under each foot, whereas in the motorized shoes group were set by the combined effect of the actuated shoes and the belts' moving at the same speed. We found that the adaptation of joint motions and measures of spatial and temporal asymmetry, which are commonly used to quantify sensorimotor adaptation in locomotion, were indistinguishable between groups. We only found small differences in the joint angle kinematics during baseline walking between the groupspotentially due to the weight and height of the motorized shoes. Our results indicate that robust sensorimotor adaptation in walking can be induced with a paired of motorized shoes, opening the exciting possibility to study sensorimotor adaptation during more realistic situations outside the laboratory.

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Section: Study Implicationsmentioning

confidence: 99%

Motorized Shoes Induce Robust Sensorimotor Adaptation in Walking

Aucie

Zhang²,

Sargent

et al. 2020

Front. Neurosci.

View full text Add to dashboard Cite

show abstract

“…This is exciting because we will be able to study gait under more realistic situations, such as when walking with variable gait speeds. It is well-accepted that motor variability can impact motor learning (Ulman et al, 2019; Wu et al, 2014), and walking on a treadmill is less variable compared to overground walking (Dingwell et al, 2001). Thus, having a device that can induce locomotor adaptation overground would help us gain more understanding about the relationship between variability and motor adaptation in a naturalistic behavior, such as walking.…”

Section: Discussionmentioning

confidence: 99%

Motorized shoes induce robust sensorimotor adaptation in walking

Torres-Oviedo

Aucie²,

Sargent

et al. 2019

Preprint

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“…Coupling angle variability (CAV), the standard deviation across all strides, was calculated for each time point using circular statistics 43 , and then pooled across the gait cycle by computing the overall root-mean-square from all time points. CAV was used as a measure of stride-to-stride coordination variability 44 .…”

Section: Methodsmentioning

confidence: 99%

Task demand and load carriage experience affect gait variability among military cadets

Ulman

Srinivasan²,

Nussbaum³

2022

Sci Rep

Self Cite

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Load carriage is an inevitable daily task for soldiers. The purposes of this study were to explore the extent to which gait variability (GV) is affected by load carriage and experience among military cadets, and whether experience-related differences in GV are dependent on task demand. Two groups of cadets (30 experienced, 30 less experienced) completed a load carriage task in each of three load conditions (no load, 16 kg, 32 kg). Three categories of GV measures were obtained: spatiotemporal variability, joint kinematic variability, and Lyapunov exponents. Compared to traditional mean gait measures, GV measures were more discriminative of experience: although both groups showed similar mean gait measures, the experienced participants had reduced variability in spatiotemporal measures (p ≤ 0.008) and joint kinematics (p ≤ 0.004), as well as lower levels of long-term local dynamic stability at the ankle (p = 0.040). In both groups, heavier loads were also caused increased GV (p ≤ 0.018) and enhanced short-term local dynamic stability at the knee (p = 0.014). These results emphasize the importance of GV measures, which may provide a more complete description of adaptability, stability, and control; highlight alternate movement strategies during more difficult load carriage; and capture experience-related differences in load carriage strategies.

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Using Gait Variability to Predict Inter-individual Differences in Learning Rate of a Novel Obstacle Course

Cited by 12 publications

References 40 publications

Motorized Shoes Induce Robust Sensorimotor Adaptation in Walking

Motorized Shoes Induce Robust Sensorimotor Adaptation in Walking

Motorized shoes induce robust sensorimotor adaptation in walking

Task demand and load carriage experience affect gait variability among military cadets

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