Postural Perturbations Induced by a Moving Virtual Environment Are Reduced in Persons With Brain Injury When Gripping a Mobile Object

Ustinova, Ksenia Ivanovna; Silkwood-Sherer, Deborah

doi:10.1097/npt.0000000000000035

Cited by 5 publications

(1 citation statement)

References 49 publications

(65 reference statements)

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“…Avoiding pure stepping during free-standing scenarios by using the fighting stance might allow postural control and less body displacement, as the results in this study showed higher harness deployment rate for pure steppers (indicative of 0 points in Table 5 ). Providing hand support, such as handrails and/or horizontal/vertical bars, will increase the opportunity to maintain balance, as postural sway during perturbations decreases ( Maki and McIlroy, 1997 ; Ustinova and Silkwood-Sherer, 2014 ; Karekla and Fang, 2021 ). Future studies should investigate hand support with an effective strategy, e.g., with characteristics such as the fighting stance , to increase the knowledge on utilizing effective CIS strategies and perturbation thresholds relevant for controlling vehicle dynamics for public transport.…”

Section: Discussionmentioning

confidence: 99%

Identifying and Characterizing Types of Balance Recovery Strategies Among Females and Males to Prevent Injuries in Free-Standing Public Transport Passengers

Silvano

Kraśna

et al. 2021

Front. Bioeng. Biotechnol.

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Free-standing passengers on public transport are subjected to perturbations during non-collision incidents caused by driver maneuvers, increasing the risk of injury. In the literature, the step strategy is described as a recovery strategy during severe perturbations. However, stepping strategies increase body displacement, ultimately subjecting passengers to higher risk of impacts and falls on public transport. This study investigates the influence of different recovery strategies on the outcome of balance recovery of free-standing public transport passengers, challenged in postural balance by the non-uniform vehicle dynamics. From high-speed video recordings, a qualitative investigation of the balance responses of volunteer participants in a laboratory experiment was provided. On a linearly moving platform, 24 healthy volunteers (11 females and 13 males) were subjected to perturbation profiles of different magnitude, shape and direction, mimicking the typical acceleration and deceleration behavior of a bus. A methodology categorizing the balancing reaction to an initial strategy and a recovery strategy, was used to qualitatively identify, characterize and, evaluate the different balance strategies. The effectiveness of different strategies was assessed with a grading criterion. Statistical analysis based on these ordinal data was provided. The results show that the current definition in the literature of the step strategy is too primitive to describe the different identified recovery strategies. In the volunteers with the most successful balancing outcome, a particularly effective balance recovery strategy not yet described in the literature was identified, labeled the fighting stance. High jerk perturbations seemed to induce faster and more successful balance recovery, mainly for those adopting the fighting stance, compared to the high acceleration and braking perturbation profiles. Compared to the pure step strategy, the characteristics of the fighting stance seem to increase the ability to withstand higher perturbations by increasing postural stability to limit body displacement.

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Section: Discussionmentioning

confidence: 99%

Identifying and Characterizing Types of Balance Recovery Strategies Among Females and Males to Prevent Injuries in Free-Standing Public Transport Passengers

Silvano

Kraśna

et al. 2021

Front. Bioeng. Biotechnol.

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Upper body balancing mechanisms and their contribution to increasing bus passenger safety

Karekla

Fang

2021

Safety Science

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Decomposition of leg movements during overground walking in individuals with traumatic brain injury

et al. 2018

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Postural Perturbations Induced by a Moving Virtual Environment Are Reduced in Persons With Brain Injury When Gripping a Mobile Object

Abstract: The stabilizing effect of gripping an external object in participants with TBI was confirmed. A possibility of using this effect as a balance aid strategy requires further investigation.

Cited by 5 publications

References 49 publications

Identifying and Characterizing Types of Balance Recovery Strategies Among Females and Males to Prevent Injuries in Free-Standing Public Transport Passengers

Identifying and Characterizing Types of Balance Recovery Strategies Among Females and Males to Prevent Injuries in Free-Standing Public Transport Passengers

Upper body balancing mechanisms and their contribution to increasing bus passenger safety

Decomposition of leg movements during overground walking in individuals with traumatic brain injury

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