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https://www.readbyqxmd.com/read/29153480/spatial-orientation-and-postural-control-in-patients-with-parkinson-s-disease
#1
E Pawlitzki, C Schlenstedt, N Schmidt, I Tödt, F Gövert, G Hartwigsen, K Witt
Postural instability is one of the most disabling and risky symptoms of advanced Parkinson's disease (PD). The purpose of this study was to investigate whether and how this is mediated by a centrally impaired spatial orientation. Therefore, we performed a spatial orientation study in 21 PD patients (mean age 68years, SD 8.5 years, 9 women) in a medically on condition and 21 healthy controls (mean age 68.9years, SD 5.5years, 14 women). We compared their spatial responses to the horizontal axis (Sakashita's visual target cancellation task), the vertical axis (bucket-test), the sagittal axis (tilt table test) and postural stability using the Fullerton Advanced Balance Scale (FAB)...
November 13, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29142656/pharyngeal-airway-dimensions-and-head-posture-in-obstructive-sleep-apnea-patients-with-and-without-morphological-deviations-in-the-upper-cervical-spine
#2
Liselotte Sonnesen, Arne Petersson, Søren Berg, Palle Svanholt
Objectives: The aim of the study was to analyse differences in pharyngeal airway dimensions and head posture between obstructive sleep apnea patients with and without morphological deviations in the upper cervical spine and to analyse associations between pharyngeal airway dimensions and head posture in the total sample. Material and Methods: The sample comprised 53 obstructive sleep apnea (OSA) patients of which 32.1% had upper spine morphological deviations. Accordingly two groups were defined: 17 OSA patients with morphological deviations in the upper spine and 36 without upper spine deviations...
July 2017: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/29138873/effects-of-cognitive-load-on-the-amount-and-temporal-structure-of-postural-sway-variability-in-stroke-survivors
#3
Hajar Mehdizadeh, Kinda Khalaf, Hamed Ghomashchi, Ghorban Taghizadeh, Ismaeil Ebrahimi, Parvaneh Taghavi Azar Sharabiani, Seyed Javad Mousavi, Mohamad Parnianpour
This study aimed to investigate the variability in postural sway patterns during quiet standing in stroke survivors. The postural sway was measured in 19 stroke survivors, as well as 19 healthy demographically matched participants, at 3 levels of postural difficulty (rigid surface with closed and open eyes, and foam surface with closed eyes), and 3 levels of cognitive difficulty (without a cognitive task, easy and difficult cognitive tasks). Both linear analyses (the amount of postural sway variability, including the standard deviation of the COP velocity in both the anteroposterior (AP) and mediolateral (ML) directions), as well as non-linear analyses [the temporal structure of the COP variability, including % Recurrence, % Determinism, Shannon Entropy, Trend and the maximum diagonal line (D max)] were employed...
November 14, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29136550/cerebellar-transcranial-direct-current-stimulation-improves-adaptive-postural-control
#4
Peter Poortvliet, Billie Hsieh, Andrew Cresswell, Jacky Au, Marcus Meinzer
OBJECTIVE: Rehabilitation interventions contribute to recovery of impaired postural control, but it remains a priority to optimize their effectiveness. A promising strategy may involve transcranial direct current stimulation (tDCS) of brain areas involved in fine-tuning of motor adaptation. This study explored the effects of cerebellar tDCS (ctDCS) on postural recovery from disturbance by Achilles tendon vibration. METHODS: Twenty-eight healthy volunteers participated in this sham-ctDCS controlled study...
October 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29114533/effects-of-whole-body-vibration-training-and-mental-training-on-mobility-neuromuscular-performance-and-muscle-strength-in-older-men
#5
Maryam Goudarzian, Samira Ghavi, Ardalan Shariat, Hossein Shirvani, Mostafa Rahimi
This study was designed to evaluate the effects of whole body vibration (WBV) exercise, mental training (MT), and the concurrent effect of WBV and MT on lower body balance, neuromuscular performance, and leg muscle strength in elderly men. In a randomized control trial study with parallel group design, 42 older men (mean±standard deviation age, 68±5.78 years) were randomly divided into four groups: WBV (n=11), MT (n=12), WBV+MT (n=10), and control (n=9) groups. The protocol of training consisted of three sessions per week for 8 weeks and about 30 min for each session...
October 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29081149/-effect-of-simulating-leg-length-inequality-on-spinal-and-pelvic-posture-in-the-elderly
#6
H F Zhang, J L Liao, M Ji, S Y Tang, J F Jin, L Chen, L J Wu
Objective: To study the effects of simulating leg length inequality on the spine and pelvic posture in standing and walking states and to explore their compensatory laws. Methods: From January to April, a total of 44 healthy volunteers were rasterstereographically examined for spine and pelvis in Institute of Digitized Medicine, Wenzhou Medical University and Department of Orthopaedics, First Affiliated Hospital of Wenzhou Medical University.Volunteers wore uniform shoes, and single 5 mm thick insoles were customized...
October 24, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29066244/reliability-of-assessing-postural-control-during-seated-balancing-using-a-physical-human-robot-interaction
#7
Ahmed Ramadan, Jacek Cholewicki, Clark J Radcliffe, John M Popovich, N Peter Reeves, Jongeun Choi
This study evaluated the within- and between-visit reliability of a seated balance test for quantifying trunk motor control using input-output data. Thirty healthy subjects performed a seated balance test under three conditions: eyes open (EO), eyes closed (EC), and eyes closed with vibration to the lumbar muscles (VIB). Each subject performed three trials of each condition on three different visits. The seated balance test utilized a torque-controlled robotic seat, which together with a sitting subject resulted in a physical human-robot interaction (pHRI) (two degrees-of-freedom with upper and lower body rotations)...
October 7, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29063605/disturbance-of-verticality-perception-and-postural-dysfunction-in-parkinson-s-disease
#8
K A Schindlbeck, W Naumann, A Maier, F Ehlen, F Marzinzik, F Klostermann
OBJECTIVES: Verticality perception is known to be abnormal in Parkinson's disease (PD), but in which stage respective dysfunctions arise and how they relate to postural disorders remains to be settled. These issues were studied with respect to different dimensions of the subjective visual vertical (SVV) in relation to clinical parameters of postural control. MATERIALS & METHODS: All participants had to orientate a luminous line at random planar orientations to a strictly vertical position using an automated operator system...
October 23, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29060412/evaluation-of-postural-instability-in-stroke-patient-during-quiet-standing
#9
Wei Wang, Ke Li, Na Wei, Cuiping Yin, Shouwei Yue
This study was designed to investigate the postural instability in stroke survivals during quiet standing. Eleven stroke patients and 11 healthy volunteers (gender- and age-matched) were recruited for this experiment. The center of pressure (COP) signals from both planta in anterior-posterior (AP) and medial-lateral (ML) directions were recorded using a three-dimensional motion capture system (BTS Bioengineering Corp, Italy) when subjects stood on the two adjacent force platforms quietly with their eyes open (EO) for 30 s and with their eyes close (EC) for another 30 s...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29055741/radiologically-defining-horizontal-gaze-using-eos%C3%A2-imaging-a-prospective-study-of-healthy-subjects-and-a-retrospective-audit
#10
Hwee Weng Dennis Hey, Kimberly-Anne Tan, Vivienne Chien-Lin Ho, Syifa Bte Azhar, Joel-Louis Lim, Gabriel Ka-Po Liu, Hee-Kit Wong
Background Context As sagittal alignment of the cervical spine is important for maintaining horizontal gaze, it is important to determine the former for surgical correction. However, horizontal gaze remains poorly-defined from a radiological point-of-view. Purpose To establish radiographic criteria to define horizontal gaze. Study design/Setting This study was conducted at a tertiary healthcare institution over a 1-month period. Patient Sample A prospective cohort of healthy patients was used to determine the best radiological criteria for defining horizontal gaze...
October 18, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29037786/changes-in-postural-sway-after-a-single-global-postural-reeducation-session-in-university-students-a-randomized-controlled-trial
#11
Carlos Lozano-Quijada, Emilio J Poveda-Pagán, José V Segura-Heras, Sergio Hernández-Sánchez, María J Prieto-Castelló
OBJECTIVE: The purpose of this study was to assess the effectiveness of a single session of global postural reeducation (GPR) in postural sway in young adult university students who use data visualization screens. METHODS: A randomized controlled trial with 2 parallel groups was performed. Sixty-four subjects were randomized in the experimental group (12 men and 20 women) who underwent the GPR session, and a control group (13 men and 19 women) that did not receive any intervention was included...
October 13, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/29031998/dominant-foot-could-affect-the-postural-control-in-vestibular-neuritis-perceived-by-dynamic-body-balance
#12
Tomoe Yoshida, Toshitake Tanaka, Yuya Tamura, Masahiko Yamamoto, Mitsuya Suzuki
During attacks of vestibular neuritis (VN), patients typically lose postural balance, with resultant postural inclination, gait deviation toward the lesion side, and tendency to fall. In this study, we examined and analyzed static and dynamic postural control during attacks of VN to characterize differences in postural control between right and left VN. Subjects were patients diagnosed with VN at the Department of Otolaryngology, Toho University Sakura Medical Center, and underwent in-patient treatment. Twenty-five patients who had spontaneous nystagmus were assessed within 3days after the onset; all were right-foot dominant...
October 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29028623/constraints-specific-influences-of-vision-touch-and-surface-compliance-in-postural-dynamics
#13
I-Chieh Lee, Matheus M Pacheco, Karl M Newell
Studies that have manipulated vision and touch in posture usually emphasize the prescriptive closed-loop function of the information to reduce the amount of postural motion. In contrast, we examine here the hypothesis that the standard sensory manipulations to maintain quiet stance also change in specific ways the constraints on the task goal and the emergent movement organization. Twelve participants were instructed to maintain quiet postural stance under three sensory factors: surface compliance (foam/no foam), visual information (open/closed eyes) and tactile information (finger touch/no finger touch)...
September 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29027608/ivabradine-in-postural-orthostatic-tachycardia-syndrome-preliminary-experience-in-children
#14
Grazia Delle Donne, Ferran Rosés Noguer, Jan Till, Tushar Salukhe, Sanjay K Prasad, Piers E F Daubeney
OBJECTIVE: Ivabradine is a selective and specific inhibitor of the I(f) current in the sinoatrial and atrioventricular nodes. It decreases heart rate and myocardial oxygen consumption at rest and during exercise. It is used in adults for management of heart failure and angina, but promising results have been obtained in postural orthostatic tachycardia syndrome (POTS). There is little experience of ivabradine in childhood, although it is used on a compassionate basis. Our aim was to review our experience of ivabradine in a retrospective evaluation of pediatric patients with POTS...
October 13, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/29023639/an-anatomical-and-mechanical-analysis-of-the-douc-monkey-genus-pygathrix-and-its-role-in-understanding-the-evolution-of-brachiation
#15
C D Byron, M C Granatosky, H H Covert
OBJECTIVES: Pygathrix is an understudied Asian colobine unusual among the Old World monkeys for its use of arm-swinging. Little data exists on the anatomy and mechanics of brachiation in this genus. Here, we consider this colobine to gain insight into the parallel evolution of suspensory behavior in primates. MATERIALS AND METHODS: This study compares axial and appendicular morphological variables of Pygathrix with other Asian colobines. Additionally, to assess the functional consequences of Pygathrix limb anatomy, kinematic and kinetic data during arm-swinging are included to compare the douc monkey to other suspensory primates (Ateles and Hylobates)...
October 11, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29020959/configurable-wearable-sensing-and-vibrotactile-feedback-system-for-real-time-postural-balance-and-gait-training-proof-of-concept
#16
Junkai Xu, Tian Bao, Ung Hee Lee, Catherine Kinnaird, Wendy Carender, Yangjian Huang, Kathleen H Sienko, Peter B Shull
BACKGROUND: Postural balance and gait training is important for treating persons with functional impairments, however current systems are generally not portable and are unable to train different types of movements. METHODS: This paper describes a proof-of-concept design of a configurable, wearable sensing and feedback system for real-time postural balance and gait training targeted for home-based treatments and other portable usage. Sensing and vibrotactile feedback are performed via eight distributed, wireless nodes or "Dots" (size: 22...
October 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29018964/a-method-to-quantify-the-cone-of-economy
#17
Ram Haddas, Isador H Lieberman
STUDY DESIGN: A non-randomized, prospective, concurrent control cohort study. OBJECTIVE: The purpose of this study is to develop and evaluate a method to quantify the dimensions of the cone of economy (COE) and the energy expenditure associated with maintaining a balanced posture within the COE, scoliosis patients and compare them to matched non-scoliotic controls in a group of adult degenerative. Balance is defined as the ability of the human body to maintain its center of mass (COM) within the base of support with minimal postural sway...
October 10, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28991345/the-efficacy-of-bilateral-lateral-rectus-recession-according-to-secondary-deviation-measurements-in-unilateral-exotropic-duane-retraction-syndrome
#18
Daphna Mezad-Koursh, Ari Leshno, Ainat Klein, Chaim Stolovich
PURPOSE: To evaluate the surgical results of asymmetric bilateral lateral rectus recession in exotropic Duane retraction syndrome with abnormal face turn toward the opposite side according to secondary deviation measurements. METHODS: Retrospective chart review. RESULTS: Seven cases of unilateral exotropic Duane retraction syndrome were reviewed. All cases had globe retraction on adduction and exotropia with limited adduction, five of which also had mild limitation of abduction...
October 9, 2017: Journal of Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/28977336/prevalence-of-scoliosis-in-public-elementary-school-students
#19
Maria Célia Cunha Ciaccia, Julia Silvestre de Castro, Mariana Abduch Rahal, Barbarah Silveira Penatti, Iara Borin Selegatto, João Lucas Morette Giampietro, Vera Esteves Vagnozzi Rullo
OBJECTIVE: To evaluate the prevalence of scoliosis and the risk factors in elementary school students. METHODS: A cross-sectional study was carried out in 954 students in 2015. The instrument involved was a questionnaire on postural habits, socioeconomic conditions, and demographic factors. The anthropometric measurements, including height and weight, a visual inspection of the deformity of the vertebral column, the leveling of shoulders, and the Adam's test were obtained...
April 2017: Revista Paulista de Pediatria: Orgão Oficial da Sociedade de Pediatria de São Paulo
https://www.readbyqxmd.com/read/28972556/activity-level-assessment-using-a-smart-cushion-for-people-with-a-sedentary-lifestyle
#20
Congcong Ma, Wenfeng Li, Raffaele Gravina, Jingjing Cao, Qimeng Li, Giancarlo Fortino
As a sedentary lifestyle leads to numerous health problems, it is important to keep constant motivation for a more active lifestyle. A large majority of the worldwide population, such as office workers, long journey vehicle drivers and wheelchair users, spends several hours every day in sedentary activities. The postures that sedentary lifestyle users assume during daily activities hide valuable information that can reveal their wellness and general health condition. Aiming at mining such underlying information, we developed a cushion-based system to assess their activity levels and recognize the activity from the information hidden in sitting postures...
October 3, 2017: Sensors
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