The Effect of Balance Confidence and Context on Functional Reach Ability in Healthy Older Adults

Norris, Beryl; Medley, Ann

doi:10.1016/j.pmrj.2011.03.013

Cited by 5 publications

(5 citation statements)

References 33 publications

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“…2b, 2d). Our results confirm previous observations that a target object in the FR task facilitates performance [18,19]. Despite low friction of the fibreglass surface, the interaction with OBT could have resulted in haptic feedback at the fingertips facilitating control of balance [3] and resembling a non-rigid, haptic 'anchor' as conceptualized by Mauerberg-deCastro and colleagues [20].…”

Section: Discussionsupporting

confidence: 89%

Interpersonal interactions for haptic guidance during maximum forward reaching

Steinl

Johannsen

2017

Gait & Posture

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Caregiver-patient interactions rely on interpersonal coordination (IPC) involving the haptic and visual modalities. We investigated in healthy individuals spontaneous IPC during joint maximum forward reaching. A 'contact-provider' (CP; n=2) kept light interpersonal touch (IPT) laterally with the wrist of the extended arm of a forward reaching, blind-folded 'contact-receiver' (CR; n=22). Due to the stance configuration, CP was intrinsically more stable. CR received haptic feedback during forward reaching in two ways: (1) presence of a light object (OBT) at the fingertips, (2) provision of IPT. CP delivered IPT with or without vision or tracked manually with vision but without IPT. CR's variabilities of Centre-of-Pressure velocity (CoP) and wrist velocity, interpersonal cross-correlations and time lags served as outcome variables. OBT presence increased CR's reaching amplitude and reduced postural variability in the reach end-state. CR's variability was lowest when CP applied IPT without vision. OBT decreased the strength of IPC. Correlation time lags indicated that CP retained a predominantly reactive mode with CR taking the lead. When CP had no vision, presumably preventing an effect of visual dominance, OBT presence made a qualitative difference: with OBT absent, CP was leading CR. This observation might indicate a switch in CR's coordinative strategy by attending mainly to CP's haptic 'anchor'. Our paradigm implies that in clinical settings the sensorimotor states of both interacting partners need to be considered. We speculate that haptic guidance by a caregiver is more effective when IPT resembles the only link between both partners.

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Section: Discussionsupporting

confidence: 89%

Interpersonal interactions for haptic guidance during maximum forward reaching

Steinl

Johannsen

2017

Gait & Posture

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“…The past two decades have seen an explosion in technologies, providing radio telescope facilities with the ability to perform deep large sky-coverage surveys (Lacy et al 2020; Norris et al 2011, 2021), or transient surveys with modest sky coverage at high cadence (Banyer et al 2012; Murphy et al 2013). This has led to researching and developing SF technologies capable of handling such data volumes and rates (Hopkins et al 2015; Riggi et al 2016, 2019; Robotham et al 2018; Hale et al 2019; Bonaldi et al 2021).…”

Section: Discussionmentioning

confidence: 99%

“…Surveys with Southern hemisphere telescopes include those with ASKAP (Johnston et al 2007, 2008), at the Murchison Radio Observatory (MRO) in Australia, such as EMU (Norris et al 2011, 2021), Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY, Koribalski et al 2020), Variables and Slow Transients (VAST, Banyer, Murphy, & VAST Collaboration 2012; Murphy et al 2013, 2021), and Rapid ASKAP Continuum Survey (RACS, McConnell et al 2020; Hale et al 2021). MRO is also home to the Murchison Widefield Array (MWA, Lonsdale et al 2009; Tingay et al 2013; Wayth et al 2015) which conducted the GaLactic and Extragalactic All-Sky MWA (GLEAM, Wayth et al 2015; Hurley-Walker 2017) survey.…”

Section: Radio Surveysmentioning

confidence: 99%

“…As radio telescope technology improves, radio surveys are becoming rich in the number and types of sources detected. EMU is expected to detect up to about 40 million sources (Norris et al 2011, 2021), expanding our knowledge in areas such as galaxy and star formation. VAST, operating at a cadence of 5 s , opens up areas of variable and transient research: e.g., flare stars, intermittent pulsars, X-ray binaries, magnetars, extreme scattering events, interstellar scintillation, radio supernovae, and orphan afterglows of gamma-ray bursts (Murphy et al 2013, 2021).…”

Section: Radio Surveysmentioning

confidence: 99%

See 1 more Smart Citation

Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders

Boyce

Hopkins

Riggi

et al. 2023

Publ. Astron. Soc. Aust.

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We present a comparison between the performance of a selection of source finders using a new software tool called Hydra. The companion paper, Paper I, introduced the Hydra tool and demonstrated its performance using simulated data. Here we apply Hydra to assess the performance of different source finders by analysing real observational data taken from the Evolutionary Map of the Universe (EMU) Pilot Survey. EMU is a wide-field radio continuum survey whose primary goal is to make a deep (20μJy/beam RMS noise), intermediate angular resolution (15″), 1 GHz survey of the entire sky south of +30° declination, and expecting to detect and catalogue up to 40 million sources. With the main EMU survey expected to begin in 2022 it is highly desirable to understand the performance of radio image source finder software and to identify an approach that optimises source detection capabilities. Hydra has been developed to refine this process, as well as to deliver a range of metrics and source finding data products from multiple source finders. We present the performance of the five source finders tested here in terms of their completeness and reliability statistics, their flux density and source size measurements, and an exploration of case studies to highlight finder-specific limitations.

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“…Each arm was measured two consecutive times and the average value was used. In this test, the intra-rater reliability was r = .89 and the interrater reliability was r = .98 [23].…”

Section: Functional Reach Testmentioning

confidence: 93%

Self-check Home Exercises Improves Static and Dynamic Balance, Fall Efficacy, and Quality of Life in Patients with Parkinson`s Disease

Kim

Park

Yim

2017

IJBSBT

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Parkinson's disease is a chronic progressive disease of the nervous system associated with the basal ganglia and is characterized by rigidity, bradykinesia, tremor, and instability of posture. In addition, it causes indirect disabilities and complications. The aim of this study was to evaluate the effects of self-check home exercise on fall prevention in patient with Parkinson's disease. The present study included 20 patients who met the study criterion, which was a diagnosis of Parkinson's disease. The present study was conducted over 12 weeks in the exercise therapy center of the G University Hospital. Periodically, once a month at the first, fifth, and ninth-week sessions, a neurosurgeon, a rehabilitation physician, a nurse in charge of neurosurgery programs dedicated to Parkinson's disease, a physiotherapist, and an occupational therapist attended the home exercises program to provide group lessons to subjects, to provide feedback regarding the home exercises program, and to carry out a self-monitoring checklist performance rate. The results showed significant differences in TUG, FRTA, FRTP, FES, STS, 10MWT, MBI, and QoL (p<.05). The present study involved showing patients with Parkinson's disease how to easily perform home exercises and how to provide ongoing feedback for motivation. The home exercises program of the present study is expected to improve the lives of patients with Parkinson's disease.

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The Effect of Balance Confidence and Context on Functional Reach Ability in Healthy Older Adults

Cited by 5 publications

References 33 publications

Interpersonal interactions for haptic guidance during maximum forward reaching

Interpersonal interactions for haptic guidance during maximum forward reaching

Hydra II: Characterisation of Aegean, Caesar, ProFound, PyBDSF, and Selavy source finders

Self-check Home Exercises Improves Static and Dynamic Balance, Fall Efficacy, and Quality of Life in Patients with Parkinson`s Disease

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