Postural control and the influence of the extent of thigh support on dynamic sitting balance among individuals with thoracic spinal cord injury

Ilha, Jocemar; Abou, Libak; Romanini, F.; Pai, Ana Carolina Dall; Mochizuki, Luís

doi:10.1016/j.clinbiomech.2020.01.012

Cited by 11 publications

(17 citation statements)

References 22 publications

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“…In addition, clinical outcomes are often insensitive to subtle dysfunctional changes and have poor reliability [ 9 ]. Within a laboratory-based setting, gait alterations and balance impairments have been accurately evaluated using motion capture, wearable sensor systems, or force plate [ 10 – 12 ]. These advanced technologies require specialized equipment and advanced knowledge to interpret their results.…”

Section: Introductionmentioning

confidence: 99%

Gait and Balance Assessments using Smartphone Applications in Parkinson’s Disease: A Systematic Review

et al. 2021

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Gait dysfunctions and balance impairments are key fall risk factors and associated with reduced quality of life in individuals with Parkinson’s Disease (PD). Smartphone-based assessments show potential to increase remote monitoring of the disease. This review aimed to summarize the validity, reliability, and discriminative abilities of smartphone applications to assess gait, balance, and falls in PD. Two independent reviewers screened articles systematically identified through PubMed, Web of Science, Scopus, CINAHL, and SportDiscuss. Studies that used smartphone-based gait, balance, or fall applications in PD were retrieved. The validity, reliability, and discriminative abilities of the smartphone applications were summarized and qualitatively discussed. Methodological quality appraisal of the studies was performed using the quality assessment tool for observational cohort and cross-sectional studies. Thirty-one articles were included in this review. The studies present mostly with low risk of bias. In total, 52% of the studies reported validity, 22% reported reliability, and 55% reported discriminative abilities of smartphone applications to evaluate gait, balance, and falls in PD. Those studies reported strong validity, good to excellent reliability, and good discriminative properties of smartphone applications. Only 19% of the studies formally evaluated the usability of their smartphone applications. The current evidence supports the use of smartphone to assess gait and balance, and detect freezing of gait in PD. More studies are needed to explore the use of smartphone to predict falls in this population. Further studies are also warranted to evaluate the usability of smartphone applications to improve remote monitoring in this population. Registration: PROSPERO CRD 42020198510 Supplementary Information The online version contains supplementary material available at 10.1007/s10916-021-01760-5.

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Section: Introductionmentioning

confidence: 99%

Gait and Balance Assessments using Smartphone Applications in Parkinson’s Disease: A Systematic Review

et al. 2021

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“…From the actual rehabilitation perspective, therapy goals can best be achieved if inspired by the ecological approach of perception and action 24 . In this context, studies that focus on improving the understanding of the dynamics of interacting constraints of individuals, tasks and environment are becoming relevant 11,12,24 . The knowledge of these dynamics of interacting constraints may help understand the effects of the task demand manipulation and how physiotherapists could use tasks or environmental conditions during task-oriented exercises or assessments.…”

Section: Discussionmentioning

confidence: 99%

“…Postural adjustments elicited by self-initiated action, such as goal-directed reaching while standing, are task-specific and environment-related in nature [5][6][7] . Studies have shown that task and environment demands can affect postural adjustments for reaching tasks in this upright position 5,6,8,9 Special issue: The role of practice in motor learning constraining effects on dynamic postural behaviour during reaching while standing could help further the understanding of the effects of task demand manipulation during taskoriented exercises in individuals with motor disorders [10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

The influence of goal-directed reaching distance on standing postural control variability in non-disabled individuals

Ilha¹,

Récchia

Santo

et al. 2022

BJMB

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BACKGROUND: Performing everyday standing tasks is relevant to the individuals independence. It is a challenging postural action that requires upper extremity (UE) movements to interact with objects of the environment. Postural movement variability is a strategy of the postural system for exploring postural boundaries during the action. The distance to the target to be reached may affect the variability in postural control parameters. AIM: To test if the variability in postural control parameters is enhanced by reaching beyond the UE-length during a goal-directed standing task. METHOD: Twelve non-disabled adult individuals performed reaching to turn on a light switch (target) while standing, which was placed at 100% and 130% of the UE-length distance. The kinetic data were recorded using a force plate during the UE movement, and the centre of pressure (CoP) displacement variability index was calculated. RESULTS: The variability index of the CoP displacement for reaching was greater at the distance of 130% of UE-length compared to 100% in both anterior-posterior and medial-lateral directions (p = 0.019). No differences in time to complete the task were observed. CONCLUSION: Postural system increases the variability in postural controlling variable CoP displacement for reaching beyond the UE-length while standing. This movement variability helps individuals explore the boundaries of this standing action and may be useful for learning processes and counterbalancing postural disturbances.

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“…When the base of support becomes smaller, and therefore, more unstable, anticipatory postural adjustments are produced before the movement of the hand, whose nal effect is the reduction of the oscillation and displacement of both the CoP and CoM, and on the contrary, postural adjustments increase when the base of support gets bigger; nally, we conclude that the initial postural con guration has a great in uence on the APA patterns 36 . One hypothesis that explains this behavior is that when the postural task is more complicated, a restriction strategy that decreases postural sway occurs, reducing the necessary control to maintain a stable posture and allowing a more e cient hand motion 37 .…”

Section: Discussionmentioning

confidence: 99%

Effects of Balance and Timing Constraints on Performance During a Pointing Task with Target Uncertainty

Moya-Jofré

Mariman

Torres-Elgueta

et al. 2022

Preprint

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Introduction: In dynamic tasks, we must make online corrections when the position of the body or objects change, which alters the feedforward and feedback mechanisms. This research aimed to determine the effect of postural stability and correction times on a pointing task with uncertain targets.Methodology: 19 young subjects performed a pointing task toward targets that exhibited a change in position (at 200, 400, or 600 ms after) while remaining in a bipedal-firm, a bipedal-foam, and a unipedal-foam surface. Kinematics parameters were recorded during pointing.Results: What affects the precision and duration of pointing is the target change timing, not the postural condition. The target change timing and the postural condition affect the movement strategy, expressed in kinematic parameters of the center of pressure (CoP), the upper-trunk, and the index finger. However, the CoP control responded to the postural demands, while the finger and trunk control responded to the postural requests and the target change timing.Conclusion: Different postural strategies allow the achievement of a pointing task despite the changes in postural conditions. Moreover, the later the target changes, the more challenging it is to correct the reaching trajectory, achieved by a prioritization of the endpoint control.

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Postural control and the influence of the extent of thigh support on dynamic sitting balance among individuals with thoracic spinal cord injury

Cited by 11 publications

References 22 publications

Gait and Balance Assessments using Smartphone Applications in Parkinson’s Disease: A Systematic Review

Gait and Balance Assessments using Smartphone Applications in Parkinson’s Disease: A Systematic Review

The influence of goal-directed reaching distance on standing postural control variability in non-disabled individuals

Effects of Balance and Timing Constraints on Performance During a Pointing Task with Target Uncertainty

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