scholarly journals Interest of active posturography to detect age-related and early Parkinson's disease-related impairments in mediolateral postural control

2014 ◽  
Vol 112 (10) ◽  
pp. 2638-2646 ◽  
Author(s):  
Cédrick T. Bonnet ◽  
Arnaud Delval ◽  
Luc Defebvre
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Young Adults ◽  
Postural Control ◽  
Center Of Pressure ◽  
Behavioral Variability ◽  
Quiet Stance ◽  
Control Subjects ◽  
Age Related ◽  
Elderly Control

Patients with Parkinson's disease display impairments of postural control most particularly in active, challenging conditions. The objective of the present study was to analyze early signs of disease-related and also age-related impairments in mediolateral body extension and postural control. Fifty-five participants (18 Hoehn and Yahr stage 2 patients in the off-drug condition, 18 healthy elderly control subjects, and 19 young adults) were included in the study. The participants performed a quiet stance task and two active tasks that analyzed the performance in mediolateral body motion: a limit of stability and a rhythmic weight shift task. As expected, the patients displayed significantly lower and slower body displacement (head, neck, lower back, center of pressure) than elderly control subjects when performing the two body excursion tasks. However, the behavioral variability in both tasks was similar between the groups. Under these active conditions, the patients showed significantly lower contribution of the hip postural control mechanisms compared with the elderly control subjects. Overall, the patients seemed to lower their performance in order to prevent a mediolateral postural instability. However, these patients, at an early stage of their disease, were not unstable in quiet stance. Complementarily, elderly control subjects displayed slower body performance than young adults, which therefore showed an additional age-related impairment in mediolateral postural control. Overall, the study illustrated markers of age-related and Parkinson's disease impairments in mediolateral postural control that may constrain everyday activities in elderly adults and even more in patients with Parkinson's disease.

scholarly journals Postural control learning dynamics in Parkinson’s disease: early ‎improvement with plateau in stability, and continuous progression in ‎flexibility and mobility

2020 ◽  
Author(s):  
Zahra Rahmati ◽  
Saeed Behzadipour ◽  
Alfred C. Schouten ◽  
Ghorban Taghizadeh ◽  
Keikhosrow Firoozbakhsh
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Postural Control ◽  
Training Program ◽  
Center Of Pressure ◽  
Balance Training ◽  
Patient Specific ◽  
Learning Dynamics ◽  
Early Improvement ◽  
Model Based

Abstract Background: Balance training improves postural control in Parkinson’s disease (PD). However, a systematic approach for the development of individualized, optimal training programs is still lacking, as the learning dynamics of the postural control in PD, over a training program are poorly understood. Objectives: We investigated the learning dynamics of the postural control in PD, during a balance-training program, in terms of the clinical, posturographic, and novel model-based measures. Methods: Twenty patients with PD participated in a balance-training program, 3 days a week, for 6 weeks. Clinical tests assessed functional balance and mobility pre-training, mid-training, and post-training. Center-of-pressure (COP) was recorded at four time-points during the training (pre-, week 2, week 4, and post-training). COP was used to calculate the sway measures and to identify the parameters of a patient-specific postural control model, at each time-point. The posturographic and model-based measures constituted the two sets of stability- and flexibility-related measures. Results: Mobility- and flexibility-related measures showed a continuous improvement during the balance-training program. In particular, mobility improved at mid-training and continued to improve to the end of the training, whereas flexibility-related measures reached significance only at the end. The progression in the balance- and stability-related measures was characterized by early improvements over the first three to four weeks of training, and reached a plateau for the rest of the training. Conclusions: The progression in balance and postural stability is achieved earlier and susceptible to plateau out, while mobility and flexibility continues to improve during the balance training.

Romberg ratio coefficient in quiet stance and postural control in Parkinson’s disease

2018 ◽  
Vol 39 (8) ◽  
pp. 1355-1360 ◽  
Author(s):  
Teresa Paolucci ◽  
Marco Iosa ◽  
Giovanni Morone ◽  
Matteo Delle Fratte ◽  
Stefano Paolucci ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Postural Control ◽  
Quiet Stance

scholarly journals Levodopa Reduces Muscle Tone and Lower Extremity Tremor in Parkinson’s Disease

1995 ◽  
Vol 22 (4) ◽  
pp. 280-285 ◽  
Author(s):  
Anne Burleigh ◽  
Fay Horak ◽  
John Nutt ◽  
James Frank
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Lower Extremity ◽  
Muscle Activity ◽  
Center Of Pressure ◽  
Muscle Tone ◽  
High Amplitude ◽  
Trunk Muscles ◽  
Foot Pressure ◽  
Control Subjects

AbstractObjectiveWe have quantified the effects of levodopa treatment in Parkinsonian subjects during maintained stance.MethodsElectromyographic muscle activity during quiet stance was assessed in subjects with Parkinson’s disease, who exhibited a fluctuating response to levodopa, and in age-matched control subjects. Stance stability was also assessed from mean displacement and velocity of the center of pressure excursions during stance.ResultsLower extremity and trunk muscles showed high amplitude activity in all Parkinson’s subjects when “off”, and a 4–5 Hz tremor in three of these subjects. When “on”, the amplitude of muscle activity was reduced in the distal muscles more than the proximal, while tremor was suppressed in all muscles. Corresponding to the excessive muscle activity, the Parkinson’s subjects had increased velocity and variability of velocity in the anterior-posterior center of foot pressure excursions, but the mean displacement of the center of pressure excursion was not different from the controls. The velocity of center of pressure excursions in the Parkinson’s subjects “on”, approached those of the control subjects suggesting that the excessive distal muscle amplitude and tremor contributed to the high velocity of the center of pressure.ConclusionsThese findings suggest that dopaminergic systems are involved in the regulation of muscle tone during stance. Depletion of dopaminergic transmission results in increased muscle tone and tremor in the lower extremities which may contribute to changes in posture and stability.

scholarly journals Postural control learning dynamics in Parkinson’s disease: early ‎improvement with plateau in stability, and continuous progression in ‎flexibility and mobility

2020 ◽  
Author(s):  
Zahra Rahmati ◽  
Saeed Behzadipour ◽  
Alfred C. Schouten ◽  
Ghorban Taghizadeh ◽  
Keikhosrow Firoozbakhsh
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Postural Control ◽  
Training Program ◽  
Center Of Pressure ◽  
Balance Training ◽  
Patient Specific ◽  
Learning Dynamics ◽  
Early Improvement ◽  
Model Based

Abstract Background: Balance training improves postural control in Parkinson’s disease (PD). However, a systematic approach for the development of individualized, optimal training programs is still lacking, as the learning dynamics of the postural control in PD, over a training program are poorly understood.Methods: We explored the learning dynamics of the postural control in PD, during a balance-training program, in terms of the clinical, posturographic, and model-based measures. Twenty patients with PD participated in a balance-training program, 3 days a week, for 6 weeks. Clinical tests assessed functional balance and mobility pre-training, mid-training, and post-training. Center-of-pressure (COP) was recorded at four time-points during the training (pre-, week 2, week 4, and post-training). COP was used to calculate the sway measures and to identify the parameters of a patient-specific postural control model, at each time-point (stability and flexibility degree). The posturographic and model-based measures constituted the two sets of stability- and flexibility-related measures.Results: Mobility- and flexibility-related measures showed a continuous improvement during the balance-training program. In particular, mobility improved at mid-training and continued to improve to the end of the training, whereas flexibility-related measures reached significance only at the end. The progression in the balance- and stability-related measures was characterized by early improvements over the first three to four weeks of training, and reached a plateau for the rest of the training. Conclusions: The progression in balance and postural stability is achieved earlier and susceptible to plateau out, while mobility and flexibility continues to improve during balance training.

scholarly journals Immediate effects of an approach in high cervical and occipitomastoidon postural control and mobility of individuals with parkinson’s disease: case series

2020 ◽  
pp. 1-7
Author(s):  
Alexandre Rodrigues Severo ◽  
Mateus Corrêa Silveira ◽  
Carlos Bolli Mota ◽  
Eduardo Costa Rhoden ◽  
Nadiesca Taisa Filippin
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Postural Control ◽  
Manual Therapy ◽  
Center Of Pressure ◽  
Lateral Displacement ◽  
Case Series ◽  
Functional Mobility ◽  
Disease Case ◽  
High Cervical

Introduction: Parkinson’s disease (PD) causes impairments in postural control and mobility that affect the individual’s independence. Manual therapy has been used in the treatment of these disorders and can change mobility and postural control. Objective: To assess the immediate effects of an approach in high cervical and occipitomastoid on postural control and mobility of individuals with PD. Method: Three individuals with PD, females, aged 52 to 73 years, participated in this case series. Participants were assessed immediately before and after therapeutic intervention through releases of suboccipital muscles and occipitomastoid sutures. Trunk mobility, functional mobility and postural control (center of pressure parameters - COP) were evaluated. Results: All participants demonstrated improvements in trunk mobility. Participants 1 and 2 slightly improved functional mobility. Participants 1 and 2 showed a decrease in the medial-lateral displacement of the COP. All participants showed increases in at least one direction to the limits of stability. Conclusions: The results showed that the intervention appears more effective on trunk mobility. Variables related to postural control changed with no consistent pattern. Further studies could investigate the association of other manual therapy techniques and their effects on mobility and postural control in individuals with PD.

Age-related changes in cognitive function and postural control in Parkinson’s disease

2014 ◽  
Vol 26 (5) ◽  
pp. 505-510 ◽  
Author(s):  
Monika Zawadka-Kunikowska ◽  
Paweł Zalewski ◽  
Jacek J. Klawe ◽  
Joanna Pawlak ◽  
Małgorzata Tafil-Klawe ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Cognitive Function ◽  
Postural Control ◽  
Age Related ◽  
Age Related Changes

scholarly journals Altered Dynamic Postural Control during Step Turning in Persons with Early-Stage Parkinson’s Disease

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Jooeun Song ◽  
Susan Sigward ◽  
Beth Fisher ◽  
George J. Salem
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Postural Control ◽  
Center Of Pressure ◽  
Early Stage ◽  
Control Strategies ◽  
Center Of Mass ◽  
Functional Deficits ◽  
Healthy Control ◽  
Advanced Stages

Persons withearly-stageParkinson’s disease (EPD) do not typically experience marked functional deficits but may have difficulty with turning tasks. Studies evaluating turning have focused on individuals in advanced stages of the disease. The purpose of this study was to compare postural control strategies adopted during turning in persons with EPD to those used by healthy control (HC) subjects. Fifteen persons with EPD, diagnosed within 3 years, and 10 HC participated. Participants walked 4 meters and then turned 90°. Dynamic postural control was quantified as the distance between the center of pressure (COP) and the extrapolated center of mass (eCOM). Individuals with EPD demonstrated significantly shorter COP-eCOM distances compared to HC. These findings suggest that dynamic postural control during turning is altered even in the early stages of PD.

scholarly journals Association between Cardiac Autonomic Control and Postural Control in Patients with Parkinson’s Disease

2020 ◽  
Vol 18 (1) ◽  
pp. 249
Author(s):  
Yoan Espinoza-Valdés ◽  
Rocio Córdova-Arellano ◽  
Maiter Espinoza-Espinoza ◽  
Diego Méndez-Alfaro ◽  
Juan Pablo Bustamante-Aguirre ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Postural Control ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Neurodegenerative Disorder ◽  
Autonomic Control ◽  
Postural Change ◽  
Mean Velocity ◽  
Cardiac Autonomic Control

Parkinson’s disease (PD) is a neurodegenerative disorder that affects postural and cardiac autonomic control. However, since it is unknown whether these changes are associated, the objective of this study was to determine whether such a relationship exists. Twenty-three patients with PD participated. The RR intervals were recorded in different positions and heart rate variability (HRV) was analyzed. Postural sway was analyzed based on the center of pressure. No significant differences on HRV indices were induced by postural change. A correlation was found between these indices and postural control, high frequency (HF), and anterior-posterior (AP) root mean square (RMS-AP) (r = 0.422, p = 0.045), low frequency (LF)/HF, and AP mean velocity (r = 0.478, p = 0.021). A correlation was found between HRV induced by postural change and postural control, Δ LF/HF and RMS-AP (r = 0.448, p = 0.032), Δ LF/HF and ellipse area (r = 0.505, p = 0.014), Δ LF/HF and AP mean velocity (r = −0.531; p = 0.009), and Δ LF and AP mean velocity (r = −0.424, p = 0.044). There is an association between the autonomic and postural systems, such that PD patients with blunted cardiac autonomic function in both the supine and orthostatic positions have worse postural control.

scholarly journals Comparison of two methods of postural control analysis during upright and quiet stance

2009 ◽  
Vol 4 (1) ◽  
pp. 30-36
Author(s):  
Ana Maria Forti Barela ◽  
Diego Alveno ◽  
Claudia Garcia ◽  
Cássio A. Pereira
Keyword(s):  
Young Adults ◽  
Postural Control ◽  
Center Of Pressure ◽  
Force Platform ◽  
Control Analysis ◽  
Quiet Stance ◽  
Mean Velocity ◽  
Methods Of Analysis ◽  
Strong Relation ◽  
Base Of Support

The goal of this study was to compare two methods of analysis, the use of force platform and based on video system, to investigate the postural control of young adults during upright stance on three bases of support. Fifteen young adults (30±4.96 years old) were asked to maintain an upright and quiet stance on a force platform for 30 s on bipedal, semi-tandem stance, and reduced bipedal bases of support. One reflective marker was placed on their back to acquire the space coordinates. Mean sway amplitude and mean velocity in anterior-posterior (AP) and medial-lateral (ML) directions and the area of stabilogram were calculated and used to compare the two methods of analysis and the effects of bases of support. Coefficient of correlation values indicated strong relation between trajectories of center of pressure and reflective marker in both directions (AP and ML), and statistical analysis of both methods indicated similar results in terms of effects of base of support. According to these results it might be suggested that both methods of analysis to investigate the control of upright and quiet stance in young adults can be used.  

scholarly journals Auditory Processing Abilities of Parkinson’s Disease Patients

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Robert L. Folmer ◽  
Jay J. Vachhani ◽  
Sarah M. Theodoroff ◽  
Rachel Ellinger ◽  
Amy Riggins
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Hearing Loss ◽  
Auditory Processing ◽  
Study Groups ◽  
Control Group ◽  
Central Auditory Processing ◽  
Control Subjects ◽  
Age Related ◽  
Auditory Functions

Since Parkinson’s Disease (PD) primarily affects older people, a majority of PD patients have age-related hearing loss (HL) that will worsen over time. The goal of this study was to assess peripheral and central auditory functions in a population of PD patients and compare the results with a group of age-matched control subjects. Study participants included 35 adults with PD (mean age = 66.9 ± 11.2 years) and a group of 35 healthy control subjects (mean age = 65.4 ± 12.3 years). Assessments included questionnaires, neuropsychological tests, audiometric testing, and a battery of central auditory processing tests. Both study groups exhibited patterns of sensorineural hearing loss (slightly worse in the PD group) which were typical for their age and would contribute to difficulties in communication for many participants. Compared to the control group, PD patients reported greater difficulty in hearing words people are speaking. Although 27 PD patients (77%) were good candidates for amplification, only 7 (26%) of these hearing aid candidates used the devices. Because it is important for PD patients to optimize communication with their family members, caregivers, friends, and clinicians, it is vital to identify and remediate auditory dysfunction in this population as early as possible.

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