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postural analysis

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https://www.readbyqxmd.com/read/29777505/a-fingertip-force-prediction-model-for-grasp-patterns-characterised-from-the-chaotic-behaviour-of-eeg
#1
Rinku Roy, Debdeep Sikdar, Manjunatha Mahadevappa, C S Kumar
A stable grasp is attained through appropriate hand preshaping and precise fingertip forces. Here, we have proposed a method to decode grasp patterns from motor imagery and subsequent fingertip force estimation model with a slippage avoidance strategy. We have developed a feature-based classification of electroencephalography (EEG) associated with imagination of the grasping postures. Chaotic behaviour of EEG for different grasping patterns has been utilised to capture the dynamics of associated motor activities...
May 19, 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29775954/a-new-methodology-based-on-functional-principal-component-analysis-to-study-postural-stability-post-stroke
#2
M Luz Sánchez-Sánchez, Juan-Manuel Belda-Lois, Silvia Mena-Del Horno, Enrique Viosca-Herrero, Celedonia Igual-Camacho, Beatriz Gisbert-Morant
BACKGROUND: A major goal in stroke rehabilitation is the establishment of more effective physical therapy techniques to recover postural stability. Functional Principal Component Analysis provides greater insight into recovery trends. However, when missing values exist, obtaining functional data presents some difficulties. The purpose of this study was to reveal an alternative technique for obtaining the Functional Principal Components without requiring the conversion to functional data beforehand and to investigate this methodology to determine the effect of specific physical therapy techniques in balance recovery trends in elderly subjects with hemiplegia post-stroke...
May 5, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29772496/vibrotactile-feedback-alters-dynamics-of-static-postural-control-in-persons-with-parkinson-s-disease-but-not-older-adults-at-high-fall-risk
#3
Carleigh M High, Hannah F McHugh, Stephen C Mills, Shinichi Amano, Jane E Freund, Srikant Vallabhajosula
BACKGROUND: Aging and Parkinson's disease are often associated with impaired postural control. Providing extrinsic feedback via vibrotactile sensation could supplement intrinsic feedback to maintain postural control. RESEARCH QUESTION: We investigated the postural control response to vibrotactile feedback provided at the trunk during challenging stance conditions in older adults at high fall risk and individuals with Parkinson's disease compared to healthy older adults...
May 8, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29767651/impaired-standing-balance-in-individuals-with-cervicogenic-headache-and-migraine
#4
Munlika Sremakaew, Somporn Sungkarat, Julia Treleaven, Sureeporn Uthaikhup
AIMS: To determine whether a difference in standing balance exists among individuals with cervicogenic headache, those with migraine, and asymptomatic controls. METHODS: A total of 24 participants with cervicogenic headache, 24 with migraine, and 24 asymptomatic controls of similar age, gender, and body mass index were included. Standing balance was assessed with a swaymeter under the conditions of eyes open and closed; on firm and soft surfaces; and in comfortable and narrow stances (for a total of eight testing conditions)...
May 15, 2018: Journal of Oral & Facial Pain and Headache
https://www.readbyqxmd.com/read/29767354/proprioceptive-muscle-tendon-stimulation-reduces-symptoms-in-primary-orthostatic-tremor
#5
M Wuehr, C Schlick, K Möhwald, R Schniepp
INTRODUCTION: Primary orthostatic tremor (OT) is characterized by high-frequency lower limb muscle contractions and a disabling sense of unsteadiness while standing. To date, therapeutic options for OT are limited. Here, we examined the effects of proprioceptive leg muscle stimulation via muscle tendon vibration (MTV) on tremor and balance control in patients with primary OT. METHODS: Tremor in nine patients with primary OT was examined during four conditions: standing (1), standing with MTV on the bilateral soleus muscles (2), lying (3), and lying with MTV (4)...
May 16, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29765307/a-novel-integrative-mechanism-in-anxiolytic-behavior-induced-by-galanin-2-neuropeptide-y-y1-receptor-interactions-on-medial-paracapsular-intercalated-amygdala-in-rats
#6
Manuel Narváez, Dasiel O Borroto-Escuela, Luis Santín, Carmelo Millón, Belén Gago, Antonio Flores-Burgess, Miguel A Barbancho, Miguel Pérez de la Mora, José Narváez, Zaida Díaz-Cabiale, Kjell Fuxe
Anxiety is evoked by a threatening situation and display adaptive or defensive behaviors, found similarly in animals and humans. Neuropeptide Y (NPY) Y1 receptor (NPYY1R) and Galanin (GAL) receptor 2 (GALR2) interact in several regions of the limbic system, including the amygdala. In a previous study, GALR2 enhanced NPYY1R mediated anxiolytic actions on spatiotemporal parameters in the open field and elevated plus maze, involving the formation of GALR2/NPYY1R heteroreceptor complexes in the amygdala. Moreover, the inclusion of complementary ethological parameters provides a more comprehensive profile on the anxiolytic effects of a treatment...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29764616/uncertainty-in-monetary-cost-estimates-for-assessing-working-postures-using-inclinometry-observation-or-self-report
#7
Amanda Waleh Åström, Marina Heiden, Svend Erik Mathiassen, Annika Strömberg
OBJECTIVE: To assess uncertainty in cost estimates for collecting posture data by inclinometry, observations and self-report. METHOD: In a study addressing physical workloads at a paper mill, costs were calculated for measuring postures of twenty-eight workers during three shifts. Uncertainty in costs was assessed for all three methods as the range between an assumed best case (lowest cost) and worst case (highest cost) using scenario analysis. RESULTS: The cost for observation was larger, but also more uncertain (€16506 and €89552 in the best and worst case, respectively) than that of inclinometry (€7613 - €45896)...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29764324/baby-m-turns-30-the-law-and-policy-of-surrogate-motherhood
#8
Eric A Feldman
This article marks the 30th anniversary of the Supreme Court of New Jersey's Baby M decision by offering a critical analysis of surrogacy policy in the United States. Despite fundamental changes in both science and society since the case was decided, state courts and legislatures remain bitterly divided on the legality of surrogacy. In arguing for a more uniform, permissive legal posture toward surrogacy, the article addresses five central debates in the surrogacy literature. First, should the legal system accommodate those seeking conception through surrogacy, or should it prohibit such arrangements? Second, if surrogacy is permitted, what steps can be taken to minimize the potential exploitation of women who are willing to rent their wombs for income? Third, what criteria should govern the eligibility to serve as a surrogate mother and an intended parent? Fourth, what principle(s) should serve as the basis for determining the parentage of children born through surrogacy? Fifth, is regulatory uniformity in the surrogacy realm desirable? Is it achievable? The article concludes that courts and legislatures should accept the validity of surrogacy contracts, determine parentage according to intent, and identify transparent criteria for the eligibility of both surrogates and intended parents...
March 2018: American Journal of Law & Medicine
https://www.readbyqxmd.com/read/29761117/genomic-analysis-identifies-masqueraders-of-full-term-cerebral-palsy
#9
Yusuke Takezawa, Atsuo Kikuchi, Kazuhiro Haginoya, Tetsuya Niihori, Yurika Numata-Uematsu, Takehiko Inui, Saeko Yamamura-Suzuki, Takuya Miyabayashi, Mai Anzai, Sato Suzuki-Muromoto, Yukimune Okubo, Wakaba Endo, Noriko Togashi, Yasuko Kobayashi, Akira Onuma, Ryo Funayama, Matsuyuki Shirota, Keiko Nakayama, Yoko Aoki, Shigeo Kure
Objective: Cerebral palsy is a common, heterogeneous neurodevelopmental disorder that causes movement and postural disabilities. Recent studies have suggested genetic diseases can be misdiagnosed as cerebral palsy. We hypothesized that two simple criteria, that is, full-term births and nonspecific brain MRI findings, are keys to extracting masqueraders among cerebral palsy cases due to the following: (1) preterm infants are susceptible to multiple environmental factors and therefore demonstrate an increased risk of cerebral palsy and (2) brain MRI assessment is essential for excluding environmental causes and other particular disorders...
May 2018: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29760787/inverted-rearfoot-posture-in-subjects-with-coexisting-patellofemoral-osteoarthritis-in-medial-knee-osteoarthritis-an-exploratory-study
#10
Hirotaka Iijima, Hiroshi Ohi, Naoto Fukutani, Tomoki Aoyama, Eishi Kaneda, Kaoru Abe, Masaki Takahashi, Shuichi Matsuda
Background: While abnormal rearfoot posture and its relationship to patellofemoral (PF) pain has been thoroughly discussed in the literature, its relationship to patellofemoral osteoarthritis (PFOA) has not been determined. This study aimed to examine whether rearfoot posture is associated with a higher prevalence of radiographic PFOA in a compartment-specific manner in patients with medial tibiofemoral osteoarthritis (TFOA). Methods: Participants from orthopedic clinics ( n  = 68, age 56-90 years, 75...
2018: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29760375/effect-of-ankle-range-of-motion-rom-and-lower-extremity-muscle-strength-on-static-balance-control-ability-in-young-adults-a-regression-analysis
#11
Seong-Gil Kim, Wan-Soo Kim
BACKGROUND The purpose of this study was to investigate the effect of ankle ROM and lower-extremity muscle strength on static balance control ability in young adults. MATERIAL AND METHODS This study was conducted with 65 young adults, but 10 young adults dropped out during the measurement, so 55 young adults (male: 19, female: 36) completed the study. Postural sway (length and velocity) was measured with eyes open and closed, and ankle ROM (AROM and PROM of dorsiflexion and plantarflexion) and lower-extremity muscle strength (flexor and extensor of hip, knee, and ankle joint) were measured...
May 15, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29758971/effects-of-dancesport-on-walking-balance-and-standing-balance-among-the-elderly
#12
Jeehoon Sohn, Sung-Ha Park, Sukwon Kim
BACKGROUND: Dancesport is a popular activity among older adults who look for fun and fitness in Korea. Studies reported positive sociological and psychological effects of dancesport. But, little studies were performed to evaluate the effects of dancesport on balance performances. OBJECTIVE: The objective of the present study was to evaluate the effects of dancesport for 15 weeks on walking balance and standing balance of older adults. METHODS: Older adults regularly participated in the dancesport program 3 times a week for 15 weeks...
May 4, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29758969/human-emotion-classification-based-on-multiple-physiological-signals-by-wearable-system
#13
Xin Liu, Qisong Wang, Dan Liu, Yuan Wang, Yan Zhang, Ou Bai, Jinwei Sun
BACKGROUND: Human emotion classification is traditionally achieved using multi-channel electroencephalogram (EEG) signal, which requires costly equipment and complex classification algorithms. OBJECTIVE: The experiments can be implemented in the laboratory environment equipped with high-performance computers for the online analysis; this will hinder the usability in practical applications. METHODS: Considering that other physiological signals are also associated with emotional changes, this paper proposes to use a wearable, wireless system to acquire a single-channel electroencephalogram signal, respiration, electrocardiogram (ECG) signal, and body postures to explore the relationship between these signals and the human emotions...
April 27, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29747309/-etiological-analysis-on-patients-with-vertigo-or-dizziness
#14
H Xue, Y Chong, Z D Jiang, Z L Liu, L Ding, S L Yang, L Wang, W P Xiang
Objective: To explore the spectrum of causes for patients with vertigo or dizziness in the Department of Neurology, and provide a reference for diagnosis and treatment of patients with vertigo or dizziness. Methods: Clinical data of patients in the Department of Neurology, Baotou Central Hospital between January 2016 and September 2017 was retrospectively analyzed. The target group under study was diagnosed based on the uniform diagnostic criteria. Results: A total of 9 200 patients with a chief complaint of vertigo or dizziness were included...
April 24, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29747067/more-symmetrical-gait-after-split-belt-treadmill-walking-does-not-modify-dynamic-and-postural-balance-in-individuals-post-stroke
#15
Carole Miéville, Séléna Lauzière, Martina Betschart, Sylvie Nadeau, Cyril Duclos
Spontaneous gait is often asymmetrical in individuals post-stroke, despite their ability to walk more symmetrically on demand. Given the sensorimotor deficits in the paretic limb, this asymmetrical gait may facilitate balance maintenance. We used a split-belt walking protocol to alter gait asymmetry and determine the effects on dynamic and postural balance. Twenty individuals post-stroke walked on a split-belt treadmill. In two separate periods, the effects of walking with the non-paretic leg, and then the paretic one, on the faster belt on spatio-temporal symmetry and balance were compared before and after these perturbation periods...
April 24, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29746537/kinetic-and-kinematic-variables-affecting-trunk-flexion-during-level-walking-in-patients-with-lumbar-spinal-stenosis
#16
Tatsuya Igawa, Junji Katsuhira, Akira Hosaka, Kenta Uchikoshi, Shinichi Ishihara, Ko Matsudaira
Lumbar spinal stenosis causes cauda equina and nerve root compression, resulting in neurological symptoms. Although trunk flexion during level walking may alleviate these symptoms by enabling spinal canal decompression, some patients do not use this strategy. We aimed to identify the kinetic and kinematic variables that affect trunk flexion in patients during level walking. Gait was recorded in 111 patients using a three-dimensional motion capture system and six force plates. From the data recorded, walking velocity, bilateral step length, cycle time, maximum trunk flexion angle, forward pelvic tilt angle, pelvic rotation angle, maximum and minimum joint angles, and moment and power of the lower limb were calculated...
2018: PloS One
https://www.readbyqxmd.com/read/29745626/train-the-brain-immediate-sensorimotor-effects-of-mentally-performed-flexor-exercises-in-patients-with-neck-pain-a-pilot-study
#17
Konstantin Beinert, Marc Sofsky, Jörg Trojan
BACKGROUND: Sensorimotor tests, like cranio- cervical flexion and cervical joint position sense tests, share a strong cognitive component during their execution. However, cognitive training for those tests has not been investigated so far. AIM: To compare mental and physical exercises for improving the sensorimotor function of the cervical spine. DESIGN: A within-subject design with 16 participants. SETTING: Outpatient physiotherapy centre...
May 9, 2018: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29742725/relationship-between-foot-posture-and-dental-malocclusions-in-children-aged-6-to-9-years-a-cross-sectional-study
#18
Ana Marchena-Rodríguez, Noelia Moreno-Morales, Edith Ramírez-Parga, María Teresa Labajo-Manzanares, Alejandro Luque-Suárez, Gabriel Gijon-Nogueron
The aim of this study was to determine the association, if any, between foot posture and dental malocclusions in the anteroposterior plane, in children.The study population consisted of 189 children (95 boys and 94 girls) aged 6 to 9 years. In every case, previous informed consent was requested and obtained from the parent/guardian and the study was approved by the Ethics Committee of the University of Málaga (CEUMA 26/2015H).This observational, descriptive, cross-sectional analysis is based on a study population (STROBE)...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29740569/kinetic-analysis-of-downward-step-posture-according-to-the-foothold-heights-and-visual-information-blockage-in-cargo-truck
#19
Seung-Hyun Hyun, Che-Cheong Ryew
The study was undertaken to compare and analyze kinetic variables during downward foot-on according to the foothold heights under interrupted-visual information on 25-t cargo truck. Skilled adult male drivers (n=10) engaged in cargo truck driving over 1 year participated in the experiment. The results obtained from cinematographic and ground reaction force data during downward foot-on as follows; First, leg stiffness, peak vertical force (PVF) and loading rate showed significant difference as an increase of foothold heights, that is, interrupted-visual information showed greater impulse force than as was not...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29740161/online-videos-indicate-human-and-dog-behaviour-preceding-dog-bites-and-the-context-in-which-bites-occur
#20
Sara C Owczarczak-Garstecka, Francine Watkins, Rob Christley, Carri Westgarth
YouTube videos of dog bites present an unexplored opportunity to observe dog bites directly. We recorded the context of bites, bite severity, victim and dog characteristics for 143 videos and for 56 videos we coded human and dog behaviour before the bite. Perceived bite severity was derived from visual aspects of the bite. Associations between bite severity and victim, dog and context characteristics were analysed using a Bayesian hierarchical regression model. Human and dog behaviour before the bite were summarised with descriptive statistics...
May 8, 2018: Scientific Reports
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