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Dynamic postural stability

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https://www.readbyqxmd.com/read/29154407/exercise-dynamic-stability-under-unstable-conditions-increases-muscle-strength-and-balance-ability-in-the-elderly
#1
Azza Hamed, Sebastian Bohm, Falk Mersmann, Adamantios Arampatzis
The purpose of the current study was to assess the effectiveness of a specific exercise intervention of mechanisms to control dynamic postural stability under unstable conditions in old adults. Forty-seven old adults (65-80 years) were assigned to two experimental groups (muscle strength group, n=15, perturbation-based group, n=16) and a control group (n=16). The strength group performed resistance exercises for legs and trunk muscles, while the perturbation-based group exercised mechanisms of dynamic stability under unstable conditions...
November 20, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29111631/physical-performance-characteristics-between-male-and-female-youth-surfing-athletes
#2
Bruno A Ferreira da Silva, Filipe M Clemente
BACKGRAUND: Despite some knowledge about the fitness levels of elite surfers, there is limited published research examining gender differences, particularly in young athletes. The purpose of this study was to describe and compare the sex differences in physical performance characteristics of elite youth surfers. It was also aimed to study the association between physical performance variables. METHODS: This longitudinal prospective study was based on a total of twenty male and female youth surfers performed a battery of physical performance tests: anthropometrics, weight-bearing dorsiflexion test, Functional Movement Screen, lower extremity dynamic stability, lower limb dynamic strength, paddling and apnea test...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29103600/upper-body-accelerations-during-planned-gait-termination-in-young-and-older-women
#3
Lorenzo Rum, Luca Laudani, Andrea Macaluso, Giuseppe Vannozzi
Transitory tasks, such as gait termination, involve interactions between neural and biomechanical factors that challenge postural stability and head stabilization patterns in older adults. The aim of the study was to compare upper body patterns of acceleration during planned gait termination at different speeds between young and older women. Ten young and 10 older women were asked to carry out three gait termination trials at slow, comfortable and fast speed. A stereophotogrammetric system and a 15-body segments model were used to calculate antero-posterior whole-body Center of Mass (AP CoM) speed and to reconstruct the centroids of head, trunk and pelvis segments...
October 25, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29081425/effect-of-visual-input-on-postural-stability-in-young-adults-with-chronic-motion-sensitivity-a-controlled-cross-sectional-study
#4
Ahmad A Alharbi, Eric G Johnson, Abdulaziz A Albalwi, Noha S Daher, Tim K Cordett, Oluwaseun I Ambode, Fahad H Alshehri
BACKGROUND: Chronic motion sensitivity (CMS) has been defined as a feeling of un-wellness elicited by either actual or perceived motion. CMS is a common condition and is more prevalent in females than in males. In addition to a variety of symptoms, young adults with CMS have less postural stability than those without CMS. OBJECTIVE: To determine whether dependence on visual cues for postural stability is different between young adults with and without CMS, and whether it differs by gender within each group...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/29063490/effect-of-somatosensory-and-neurofeedback-training-on-balance-in-older-healthy-adults-a-preliminary-investigation
#5
Atefeh Azarpaikan, Hamidreza Taheri Torbati
The aim of this study was to assess the effectiveness of balance training with somatosensory and neurofeedback training on dynamic and static balance in healthy, elderly adults. The sample group consisted of 45 healthy adults randomly assigned to one of the three test groups: somatosensory, neurofeedback, and a control. Individualization of the balance program started with pre-tests for static and dynamic balances. Each group had 15- and 30-min training sessions. All groups were tested for static (postural stability) and dynamic balances (Berg Balance Scale) in acquisition and transfer tests (fall risk of stability and timed up and go)...
October 23, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/29053448/the-effects-of-coding-schemes-on-vibrotactile-biofeedback-for-dynamic-balance-training-in-parkinson-s-disease-and-healthy-elderly-individuals
#6
Beom-Chan Lee, Alberto Fung, Timothy A Thrasher
A coding scheme for earlier versions of vibrotactile biofeedback systems for balance-related applications was primarily binary in nature, either off or on at a given threshold (range of postural tilt), making it unable to convey information about error magnitude. The purpose of this study was to explore the effects of two coding schemes (binary vs. continuous) for vibrotactile biofeedback during dynamic weight-shifting exercises that are common physical therapists' recommended balance exercises used in clinical settings...
October 16, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29022403/developmental-approach-for-behavior-learning-using-primitive-motion-skills
#7
Farhan Dawood, Chu Kiong Loo
Imitation learning through self-exploration is essential in developing sensorimotor skills. Most developmental theories emphasize that social interactions, especially understanding of observed actions, could be first achieved through imitation, yet the discussion on the origin of primitive imitative abilities is often neglected, referring instead to the possibility of its innateness. This paper presents a developmental model of imitation learning based on the hypothesis that humanoid robot acquires imitative abilities as induced by sensorimotor associative learning through self-exploration...
August 6, 2017: International Journal of Neural Systems
https://www.readbyqxmd.com/read/28985578/standing-or-swaying-to-the-beat-discrete-auditory-rhythms-entrain-stance-and-promote-postural-coordination-stability
#8
Alexandre Coste, Robin N Salesse, Mathieu Gueugnon, Ludovic Marin, Benoît G Bardy
Humans seem to take social and behavioral advantages of entraining themselves with discrete auditory rhythms (e.g., dancing, communicating). We investigated the benefits of such an entrainment on posture during standing (spontaneous entrainment) and during a whole-body swaying task (intentional synchronization). We first evaluated how body sway was entrained by different auditory metronome frequencies (0.25, 0.5, and 1.0Hz). We then assessed the stabilizing role of auditory rhythms on postural control, characterized in a dynamical systems perspective by informational anchoring of the head (local stabilization) and fewer transitions from in-phase to anti-phase ankle-hip coordination (global stabilization)...
September 25, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28973782/the-effects-of-cerebellar-transcranial-direct-current-stimulation-on-static-and-dynamic-postural-stability-in-older-individuals-a-randomized-double-blind-sham-controlled-study
#9
Fatemeh Ehsani, Afshin Samaei, Maryam Zoghi, Rozita Hedayati, Shapour Jaberzadeh
The aging population is growing rapidly. Risk of falling is higher in older people compared to young adults due to several reasons including poor posture and balance. The main aim of this study was to investigate the effect of cerebellar anodal transcranial direct current stimulation (a-tDCS) on static and dynamic postural stability in older individuals. Twenty-nine older adults participated in this study and were randomly allocated to two groups of active a-tDCS (experimental) (n=14) or sham tDCS group (n=15)...
October 3, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28971359/baropodometry-on-patients-after-total-knee-arthroplasty
#10
A Notarnicola, G Maccagnano, A Fiore, A Spinarelli, L Montenegro, M Paoloni, F Pastore, S Tafuri, B Moretti
PURPOSE: It is well known that total knee replacement surgery decreases pain and improves function, but the effect on postural assessment needs to be studied better with the use of new technological devices. Total knee arthroplasty (TKA) improves motor coordination and stability of the knee. On the other hand, changing joint functionality can modify the balance. The aim of this trial is to record and analyze the static and dynamic baropodometric data of patients in the first few months following joint replacement...
October 3, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/28962911/from-the-international-space-station-to-the-clinic-how-prolonged-unloading-may-disrupt-lumbar-spine-stability
#11
Jeannie F Bailey, Stephanie L Miller, Kristine Khieu, Conor W O'Neill, Robert M Healey, Dezba G Coughlin, Jojo V Sayson, Douglas G Chang, Alan R Hargens, Jeffrey C Lotz
Background context Prolonged microgravity exposure is associated with localized low back pain and an elevated risk of post-flight disc herniation. Though the mechanisms by which microgravity impairs the spine are unclear, they should be foundational for developing in-flight countermeasures for maintaining astronaut spine health. Because human spine anatomy has adapted to upright posture on Earth, observations of how spaceflight affects the spine should also provide new and potentially important information on spine biomechanics that benefit the general population...
September 26, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28953185/creative-dance-practice-improves-postural-control-in-a-child-with-cerebral-palsy
#12
Kate Stribling, Jennifer Christy
PURPOSE: To investigate the effect of creative dance instruction on postural control and balance in an 11-year-old with spastic triplegic cerebral palsy, Gross Motor Function Classification Scale level II. DESCRIPTIONS: We conducted 1-hour dance interventions twice weekly for 8 weeks, with a focus on somatosensory awareness and movement in all planes of motion. Computerized dynamic posturography using the SMART Balance Master/EquiTest (NeuroCom) was used to assess postural control and balance reactions before the first class and following the final class...
October 2017: Pediatric Physical Therapy
https://www.readbyqxmd.com/read/28951719/human-derived-disturbance-estimation-and-compensation-dec-method-lends-itself-to-a-modular-sensorimotor-control-in-a-humanoid-robot
#13
Vittorio Lippi, Thomas Mergner
The high complexity of the human posture and movement control system represents challenges for diagnosis, therapy, and rehabilitation of neurological patients. We envisage that engineering-inspired, model-based approaches will help to deal with the high complexity of the human posture control system. Since the methods of system identification and parameter estimation are limited to systems with only a few DoF, our laboratory proposes a heuristic approach that step-by-step increases complexity when creating a hypothetical human-derived control systems in humanoid robots...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28946857/predicting-the-multi-domain-progression-of-parkinson-s-disease-a-bayesian-multivariate-generalized-linear-mixed-effect-model
#14
Ming Wang, Zheng Li, Eun Young Lee, Mechelle M Lewis, Lijun Zhang, Nicholas W Sterling, Daymond Wagner, Paul Eslinger, Guangwei Du, Xuemei Huang
BACKGROUND: It is challenging for current statistical models to predict clinical progression of Parkinson's disease (PD) because of the involvement of multi-domains and longitudinal data. METHODS: Past univariate longitudinal or multivariate analyses from cross-sectional trials have limited power to predict individual outcomes or a single moment. The multivariate generalized linear mixed-effect model (GLMM) under the Bayesian framework was proposed to study multi-domain longitudinal outcomes obtained at baseline, 18-, and 36-month...
September 25, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28946576/the-effects-of-mat-pilates-and-reformer-pilates-in-patients-with-multiple-sclerosis-a-randomized-controlled-study
#15
I Bulguroglu, A Guclu-Gunduz, G Yazici, C Ozkul, C Irkec, B Nazliel, H Z Batur-Caglayan
BACKGROUND: Pilates is an exercise method which increases strength and endurance of core muscles and improves flexibility, dynamic postural control and balance. OBJECTIVE: To analyze and compare the effects of Mat and Reformer Pilates methods in Patients with Multiple Sclerosis (MS). METHODS: Thirty-eight patients with MS were included in the study. Participants were randomly divided into 3 groups as Mat Pilates, Reformer Pilates and control groups...
2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28946545/impact-of-foot-pronation-on-postural-stability-an-observational-study
#16
Ghada Mohamed Koura, Doaa Ayoub Elimy, Hamada Ahmed Hamada, Hossam Eddien Fawaz, Mohamed Hussein Elgendy, Ibtissam M Saab
OBJECTIVE: To investigate the effect of foot pronation on the dynamic balance including overall stability index (OAI), anteroposterior stability index (APSI) and mediolateral stability index (MLSI). METHODS: Forty participants from both sexes were selected from the Faculty of Physical Therapy, Cairo University, with a mean age of 23.55 ± 1.74 years. Subjects were divided into two groups: group A (8 males and 12 females) with foot pronation, and group B (9 males and 11 females) with normal feet...
September 15, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28944715/balance-training-enhances-motor-coordination-during-a-perturbed-side-step-cutting-task
#17
Anderson Souza Oliveira, Priscila de Brito Silva, Morten Enemark Lund, Dario Farina, Uwe Gustav Kersting
Study Design Controlled laboratory study. Background Balance training (BTR) may improve motor coordination, however little is known about the changes in motor coordination during unexpected perturbations to postural control following BTR. Objectives To study the effects of BTR on motor coordination and knee mechanics during perturbed side-step cutting maneuvers in healthy adults. Methods Twenty-six healthy men were randomly assigned to a training group (TG) or control (CG). Before BTR, subjects performed unperturbed, 90° side-step cutting maneuvers and one unexpected perturbed cut (10-cm translation of a moveable platform)...
September 23, 2017: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/28934067/transient-effects-of-gaze-stability-exercises-on-postural-stability-in-patients-with-posterior-circulation-stroke
#18
Tsubasa Mitsutake, Maiko Sakamoto, Kozo Ueta, Etsuo Horikawa
The authors sought to investigate if short-term gaze stability exercises have an effect on postural stability of dynamic standing during neck movement in patients with posterior circulation stroke (PCS). Patients in both PCS and non-PCS groups were assigned to either an intervention or control group. The intervention group performed the gaze stability exercises for 10 min while the control group was merely resting. The center of pressure velocity was calculated to evaluate the postural stability. After intervention, PCS and non-PCS showed a significant reduction in center of pressure velocity during dynamic standing with eyes closed condition, and the PCS group showed a significant improvement in eye-opened condition...
September 21, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28923138/orientation-preferences-and-motion-sickness-induced-in-a-virtual-reality-environment
#19
Wei Chen, Jian-Gang Chao, Yan Zhang, Jin-Kun Wang, Xue-Wen Chen, Cheng Tan
BACKGROUND: Astronauts' orientation preferences tend to correlate with their susceptibility to space motion sickness (SMS). Orientation preferences appear universally, since variable sensory cue priorities are used between individuals. However, SMS susceptibility changes after proper training, while orientation preferences seem to be intrinsic proclivities. The present study was conducted to investigate whether orientation preferences change if susceptibility is reduced after repeated exposure to a virtual reality (VR) stimulus environment that induces SMS...
October 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28916583/a-balance-and-proprioception-intervention-programme-to-enhance-combat-performance-in-military-personnel
#20
Shany Funk, T Jacob, D Ben-Dov, E Yanovich, O Tirosh, N Steinberg
BACKGROUND: Optimal functioning of the lower extremities under repeated movements on unstable surfaces is essential for military effectiveness. Intervention training to promote proprioceptive ability should be considered in order to limit the risk for musculoskeletal injuries. The aim of this study was to assess the effect of a proprioceptive intervention programme on static and dynamic postural balance among Israel Defense Forces combat soldiers. METHODS: Twenty-seven male soldiers, aged 18-20 years, from a physical fitness instructor's course, were randomly divided into two groups matched by age and army unit...
September 14, 2017: Journal of the Royal Army Medical Corps
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