Self-perceived and actual ability in the functional reach test in patients with Parkinson’s disease

Ryckewaert, Gilles; Luyat, Marion; Rambour, M.; Tard, Céline; Noël, Myriam; Defebvre, Luc; Delval, Arnaud

doi:10.1016/j.neulet.2015.01.039

Cited by 15 publications

(16 citation statements)

References 20 publications

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“…This result is consistent with the results reported in many studies [10, 28–30]. In PD, it is considered that the stability limit becomes smaller because of mobility being reduced by rigidity, impaired postural reaction, impaired motion perception, and so forth [28–30].…”

Section: Discussionsupporting

confidence: 92%

“…Presumably, people estimate how far they can spatially reach on the basis of information from the visual, auditory, and somatic senses and their past experiences and then start movement on the basis of this estimation [2, 3]. The distances that study participants estimate to be reachable through this cognitive process can be measured, and there are several reports on this subject [4–10]. …”

Section: Introductionmentioning

confidence: 99%

“…The reaching movement of patients with Parkinson's disease (PD) has also been described in many reports, and the reported characteristics of their reaching movement include the delay of the start of movement [11], slow speed of movement [12], and impaired coordination between the arm and the trunk [13]. Moreover, in PD patients, the reaching distance determined by the functional reach test is shorter in those with a history of falls than in those without [10, 14, 15], and the reaching distance is suggested to be associated with decreased postural stability and falls. It is assumed that, in PD patients, reaching movement is limited by decreased movement of the upper limbs due to akinesia or bradykinesia, decreased flexibility due to rigidity of the four limbs and trunk, and the impairment of postural reflexes associated with these decreases.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, some reports showed PD patients tend to underestimate spatial distance [10, 22, 23]. Factors affecting the cognition of spatial distance have considered physical factors and environment factors [4–6].…”

Section: Introductionmentioning

confidence: 99%

“…The difference in the right and left sides of the spatial cognition has been discussed in PD patients [22, 23, 25, 26]. In PD patients, although estimated reaching distance was analyzed only front reach [9, 10], the differences in the right and left sides need more investigation. Thus, regarding the distance estimated in reaching movement by PD patients, we evaluated distance cognition in a more spatial manner by measuring estimated and actual maximal reaching distance in the right and left directions, in addition to the front direction.…”

Section: Introductionmentioning

confidence: 99%

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The Cognition of Maximal Reach Distance in Parkinson’s Disease

Otsuki

Nagaoka

2016

Parkinson's Disease

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This study aimed to investigate whether the cognition of spatial distance in reaching movements was decreased in patients with Parkinson's disease (PD) and whether this cognition was associated with various symptoms of PD. Estimated and actual maximal reaching distances were measured in three directions in PD patients and healthy elderly volunteers. Differences between estimated and actual measurements were compared within each group. In the PD patients, the associations between “error in cognition” of reaching distance and “clinical findings” were also examined. The results showed that no differences were observed in any values regardless of dominance of hand and severity of symptoms. The differences between the estimated and actual measurements were negatively deviated in the PD patients, indicating that they tended to underestimate reaching distance. “Error in cognition” of reaching distance correlated with the items of posture in the motor section of the Unified Parkinson's Disease Rating Scale. This suggests that, in PD patients, postural deviation and postural instability might affect the cognition of the distance from a target object.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Cognition of Maximal Reach Distance in Parkinson’s Disease

Otsuki

Nagaoka

2016

Parkinson's Disease

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Development of a Method for Evaluating Elderly Mobility Functions Using Acceleration Sensors in Smartphones

Sawada

Fushiki

Nakajima

et al. 2023

IEEJ Transactions Elec Engng

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Locomotive syndrome (LS) is a condition in which a person's mobility is impaired due to musculoskeletal disorders caused by aging or lack of exercise, signaling an imminent need for primary nursing care. This study aims to develop a smartphone application that can distinguish the LS stage in a safe, simple, and quantifiable manner. Using a six-axes accelerometer built into the smartphone, acceleration and angular velocity data were collected from elderly subjects performing alternating one-legged stances at intervals of 2.66 s. Frequency analysis was then performed with a fast Fourier transform (FFT) and an autocorrelation coefficient to compare the data characteristics of subjects with and without LS. Due to huge individual variances, significant differences were not observed between LS and non-LS, and discriminating the LS stage using frequency analysis was considered difficult in the present study. In contrast, the autocorrelation coefficient showed significant differences between LS and non-LS in acceleration and angular velocity in specific directions. Using the autocorrelation coefficient of acceleration and angular velocity data to detect the presence of LS was concluded to be effective.

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