Temporal more than spatial regulation of sway is important for posture in response to an ultra-compliant surface

Haworth, Joshua; Strang, Adam J.; Hieronymus, Mathias; Walsh, Mark

doi:10.1080/08990220.2018.1445988

Cited by 6 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Overall, the findings suggest that indiscriminate functional or pathophysiological implications from a single measure or a set of a few different measures are not warranted. For instance, Median Frequency is least sensitive to increased levels of difficulty ( 180 ), while it is sensitive to adaptation to Foam and to successive standing trials so that one has to be aware of this when repeating tests ( 88 , 181 , 182 ).…”

Section: Discussionmentioning

confidence: 99%

Incongruity of Geometric and Spectral Markers in the Assessment of Body Sway

Sozzi

Ghai²,

Schieppati

2022

Front. Neurol.

View full text Add to dashboard Cite

Different measurements of body oscillations in the time or frequency domain are being employed as markers of gait and balance abnormalities. This study investigates basic relationships within and between geometric and spectral measures in a population of young adult subjects. Twenty healthy subjects stood with parallel feet on a force platform with and without a foam pad. Adaptation effects to prolonged stance were assessed by comparing the first and last of a series of eight successive trials. Centre of Foot Pressure (CoP) excursions were recorded with Eyes Closed (EC) and Open (EO) for 90s. Geometric measures (Sway Area, Path Length), standard deviation (SD) of the excursions, and spectral measure (mean power Spectrum Level and Median Frequency), along the medio-lateral (ML) and antero-posterior (AP) direction were computed. Sway Area was more strongly associated than Path Length with CoP SD and, consequently, with mean Spectrum Level for both ML and AP, and both visual and surface conditions. The squared-SD directly specified the mean power Spectrum Level of CoP excursions (ML and AP) in all conditions. Median Frequency was hardly related to Spectrum Level. Adaptation had a confounding effect, whereby equal values of Sway Area, Path Length, and Spectrum Level corresponded to different Median Frequency values. Mean Spectrum Level and SDs of the time series of CoP ML and AP excursions convey the same meaning and bear an acceptable correspondence with Sway Area values. Shifts in Median Frequency values represent important indications of neuromuscular control of stance and of the effects of vision, support conditions, and adaptation. The Romberg Quotient EC/EO for a given variable is contingent on the compliance of the base of support and adaptation, and different between Sway Area and Path Length, but similar between Sway Area and Spectrum Level (AP and ML). These measures must be taken with caution in clinical studies, and considered together in order to get a reliable indication of overall body sway, of modifications by sensory and standing condition, and of changes with ageing, medical conditions and rehabilitation treatment. However, distinct measures shed light on the discrete mechanisms and complex processes underpinning the maintenance of stance.

show abstract

Section: Discussionmentioning

confidence: 99%

Incongruity of Geometric and Spectral Markers in the Assessment of Body Sway

Sozzi

Ghai²,

Schieppati

2022

Front. Neurol.

View full text Add to dashboard Cite

show abstract

“…This includes, for example, practice in situations where a person’s base of support is altered, such as standing on one foot, 8 , 9 lower extremity strength training, 10 , 11 and yoga exercises. 12 , 13 These approaches, while used widely, have a number of inherent limitations that must be considered. First, these interventions often require a significant time commitment (>2 hours per week), which may lead to participant dropout.…”

Section: Introductionmentioning

confidence: 99%

Six Weeks of at Home BTrackS Target Tracking Training Induces Sustained Dynamic Balance Improvement in Healthy Young Adults

Conner¹,

Haworth²,

Nolff³

et al. 2023

MDER

Self Cite

View full text Add to dashboard Cite

Purpose The Balance Tracking System’s Target Tracking Training protocol requires an individual to keep an onscreen dot within a moving target circle via leaning movements that are sensed by a Balance Tracking System’s balance plate. The present study sought to determine for the first time if short duration at-home training using Balance Tracking System’s Target Tracking Training could improve dynamic balance. Methods Fifteen healthy young adults (mean age = 22.4 years) performed Balance Tracking System’s Target Tracking Training for six weeks at home, with an average of five, three-minute sessions per week. The first three weeks of Balance Tracking System’s Target Tracking Training were completed on the firm surface of a Balance Tracking Systems Balance Plate, while the final three weeks were performed on a foam cushion on top of the plate. This was followed by a three-week retention period where participants performed no training. Dynamic balance changes were assessed at multiple timepoints with the Balance Tracking System’s Limits of Stability protocol. Results Participants significantly improved Balance Tracking System’s Target Tracking Training from the first to last day of training in both three-week periods ( p <0.01). This increase was mirrored by improved Balance Tracking System’s Limits of Stability results. Specifically, Balance Tracking System’s Limits of Stability area (ie dynamic balance) increased significantly from Baseline to the end of the first three weeks of training (p<0.001), and again after the second three weeks (p<0.01). These gains were maintained following the retention period. Conclusion The present findings support use of short duration Balance Tracking System’s Target Tracking Training to improve dynamic balance at home. This increase in dynamic balance could ultimately be used a practical means of improving athletic performance.

show abstract