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Postural deviations

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https://www.readbyqxmd.com/read/28915097/synergies-and-motor-equivalence-in-voluntary-sway-tasks-the-effects-of-visual-and-mechanical-constraints
#1
Mariusz P Furmanek, Stanisław Solnik, Daniele Piscitelli, Omid Rasouli, Ali Falaki, Mark L Latash
The authors used two analyses developed within the framework of the uncontrolled manifold hypothesis to quantify multimuscle synergies during voluntary body sway: analysis of intertrial variance and analysis of motor equivalence with respect to the center of pressure (COP) trajectory. Participants performed voluntary sway tasks in the anteroposterior direction at 0.33 and 0.66 Hz. Muscle groups were identified in the space of muscle activations and used as elemental variables in the synergy analyses. Changing mechanical and vision feedback-based constraints led to significant changes in indices of sway performance such as COP deviations in the uninstructed, mediolateral direction and indices of spontaneous postural sway...
September 15, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28903771/novel-spatiotemporal-analysis-of-gait-changes-in-body-weight-supported-treadmill-trained-rats-following-cervical-spinal-cord-injury
#2
Nathan D Neckel
BACKGROUND: Common gait measures such as stride length, cycle time, and step height are not independent variables, but different aspects of the same multidimensional step. This complicates comparisons between experimental groups. Here we present a novel multidimensional gait analysis method and use this method to assess the ability of body weight supported treadmill training (BWSTT) to improve rodent stepping after spinal cord injury (SCI). METHODS: In lieu of reducing a step to a collection of gait measures and comparing the means of several of these, we developed a multidimensional analysis technique that compares the step as a whole...
September 13, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28882381/trunk-muscle-activation-pattern-in-parkinsonian-camptocormia-as-revealed-with-surface-electromyography
#3
Nils G Margraf, Marten Rogalski, Günther Deuschl, Johann P Kuhtz-Buschbeck
INTRODUCTION: Camptocormia is frequently seen in Parkinson's disease (PD) and multiple system atrophy. It is characterized by a pathological forward bending of the trunk during standing, often combined with a lateral trunk deviation. The etiology of camptocormia in PD is still unknown. Muscle MRI studies show abnormalities mainly of the erector spinae confirmed by muscle biopsies. Quantitative electromyographic examination of trunk muscle activity is missing. METHODS: Ventral (rectus and obliquus externus abdominis) and dorsal (iliocostalis lumborum, longissimus, multifidus) trunk muscles and the rectus femoris were recorded bilaterally with surface electromyography in standing PD patients with camptocormia (n = 10) and matched healthy controls (n = 10) who mimicked the patients' posture...
August 31, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28872656/comparison-of-hand-use-and-forelimb-posture-during-vertical-climbing-in-mountain-gorillas-gorilla-beringei-beringei-and-chimpanzees-pan-troglodytes
#4
Johanna Neufuss, Martha M Robbins, Jana Baeumer, Tatyana Humle, Tracy L Kivell
OBJECTIVES: Studies on grasping and limb posture during arboreal locomotion in great apes in their natural environment are scarce and thus, attempts to correlate behavioral and habitat differences with variation in morphology are limited. The aim of this study is to compare hand use and forelimb posture during vertical climbing in wild, habituated mountain gorillas (Gorilla beringei beringei) and semi-free-ranging chimpanzees (Pan troglodytes) to assess differences in the climbing styles that may relate to variation in hand or forelimb morphology and body size...
September 5, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28872158/stabilometric-findings-in-patients-affected-by-organic-dysphonia-before-and-after-phonomicrosurgery
#5
A Nacci, S O Romeo, S Berrettini, J Matteucci, M D Cavaliere, V Mancini, E Panicucci, F Ursino, B Fattori
The purpose of this study is to understand if there is any alteration in the posture of patients affected by organic dysphonia and describe possible postural modifications after phonomicrosurgery on the vocal folds. Forty subjects (22 males, 18 females; mean age 32.6 ± 7.5 years) suffering from organic dysphonia (15 cases of polyps, 11 submucosal retention cysts, 10 bilateral fibrous vocal fold nodules and 4 bilateral Reinke's oedema) were examined by open-eye and closed-eye posturography while breathing spontaneously before surgery, 24 hours after surgery and after 6 months...
August 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28836461/a-musculoskeletal-model-to-estimate-the-relative-changes-in-wrist-strength-due-to-interacting-wrist-and-forearm-postures
#6
Nicholas J La Delfa, Jim R Potvin
Wrist rotations about one wrist axis (e.g. flexion/extension) can affect the strength about another wrist axis (e.g. radial/ulnar deviation). This study used a musculoskeletal model of the distal upper extremity, and an optimization approach, to quantify the interaction effects of wrist flexion/extension (FE), radial/ulnar deviation (RUD) and forearm pronation/supination (PS) on wrist strength. Regression equations were developed to predict the relative changes in strength from the neutral posture, so that the changes in strength, due to complex and interacting wrist and forearm rotation postures, can be incorporated within future ergonomics assessments of wrist strength...
August 24, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28822721/postural-assessment-in-class-iii-patients-before-orthognathic-surgery
#7
Fernando Zugno Kulczynski, Fernando de Oliveira Andriola, Pedro Henrique Deon, Denizar Alberto da Silva Melo, Rogério Miranda Pagnoncelli
PURPOSE: To determine the postural characteristics of patients with Class III dentofacial deformities before orthognathic surgery by photogrammetry using SAPO postural assessment software. MATERIALS AND METHODS: This was a cross-sectional study. Eligible participants were adult patients who had an indication for orthognathic surgery to correct skeletal Class III dentofacial deformities and were undergoing orthodontic preparation for surgery. Patients were recruited at the outpatient clinic for dentofacial deformities of the authors' institution from March to November 2015...
July 25, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28822476/posture-alignment-of-adolescent-idiopathic-scoliosis-photogrammetry-in-scoliosis-school-screening
#8
Patrícia Jundi Penha, Nárima Lívia Jundi Penha, Bárbarah Kelly Gonçalves De Carvalho, Rodrigo Mantelatto Andrade, Ana Carolina Basso Schmitt, Sílvia Maria Amado João
OBJECTIVE: The objective of this study was to describe the posture patterns of adolescents diagnosed with adolescent idiopathic scoliosis (AIS) in a scoliosis school screening (SSS). METHODS: Two-dimensional photogrammetry was used to assess the posture of 37 adolescents diagnosed with scoliosis (scoliosis group, SG) (Cobb angle ≥10°) and 76 adolescents with a false positive diagnosis (false positive group, FPG) (Cobb angle <10°, angle of trunk rotation ≥7°)...
July 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28812419/the-effects-of-exergaming-and-treadmill-training-on-gait-balance-and-cognition-in-a-person-with-parkinson-s-disease-a-case-study
#9
Srikant Vallabhajosula, Amy K McMillion, Jane E Freund
BACKGROUND: Parkinson's disease (PD) commonly impairs posture, gait, and cognition. Exercise in the form of aerobic activity as well as exergaming may improve motor ability and cognition in persons with PD. Exergaming and treadmill training can be a practical form of exercise within the home; however, there is minimal research on this combined multimodal intervention for persons with PD. OBJECTIVE: We investigated the effects of this combined intervention on cognition, balance, and gait in a person with PD through supervised lab sessions augmented by home-based sessions...
August 16, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28806590/how-multi-segmental-patterns-deviate-in-spastic-diplegia-from-typical-developed
#10
Matteo Zago, Chiarella Sforza, Alessia Bona, Veronica Cimolin, Pier Francesco Costici, Claudia Condoluci, Manuela Galli
BACKGROUND: The relationship between gait features and coordination in children with Cerebral Palsy is not sufficiently analyzed yet. Principal Component Analysis can help in understanding motion patterns decomposing movement into its fundamental components (Principal Movements). This study aims at quantitatively characterizing the functional connections between multi-joint gait patterns in Cerebral Palsy. METHODS: 65 children with spastic diplegia aged 10.6 (SD 3...
August 8, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28802368/study-of-the-effects-of-hearing-on-static-and-dynamic-postural-function-in-children-using-cochlear-implants
#11
Malihah Mazaheryazdi, Abdollah Moossavi, Javad Sarrafzadah, Saeed Talebian, Shohreh Jalaie
OBJECTIVE: The present study aimed to evaluate the postural control perturbations by the center of pressure parameters in two main approaches, cochlear implant turned "on" and "off". METHODS: We included 25 children aged 8-10 years with unilateral cochlear implants and bilateral vestibular hypofunction deficit. To evaluate the postural function, each children was asked to stand on the force plate under 3 different conditions and cochlear implant turned "on" and "off": Condition (A) double stance from open eyes to closed eyes, Condition (B) double stance with open eyes engaging in the dual task and Condition (C) From double leg stance to one leg stance with open eyes for assessment of dynamic postural control...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28772132/effect-of-hearing-aids-on-static-balance-function-in-elderly-with-hearing-loss
#12
Hossein Negahban, Mahtab Bavarsad Cheshmeh Ali, Gholamhossein Nassadj
While a few studies have investigated the relationship between hearing acuity and postural control, little is known about the effect of hearing aids on postural stability in elderly with hearing loss. The aim was to compare static balance function between elderly with hearing loss who used hearing aids and those who did not use. The subjects asked to stand with (A) open eyes on rigid surface (force platform), (B) closed eyes on rigid surface, (C) open eyes on a foam pad, and (D) closed eyes on a foam pad. Subjects in the aided group (n=22) were tested with their hearing aids turned on and hearing aids turned off in each experimental condition...
July 24, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28753945/developing-and-validating-an-age-independent-equation-using-multi-frequency-bioelectrical-impedance-analysis-for-estimation-of-appendicular-skeletal-muscle-mass-and-establishing-a-cutoff-for-sarcopenia
#13
Yosuke Yamada, Miyuki Nishizawa, Tomoka Uchiyama, Yasuhiro Kasahara, Mikio Shindo, Motohiko Miyachi, Shigeho Tanaka
Background: Appendicular skeletal muscle (or lean) mass (ALM) estimated using dual-energy X-ray absorptiometry (DXA) is considered to be a preferred method for sarcopenia studies. However, DXA is expensive, has limited portability, and requires radiation exposure. Bioelectrical impedance analysis (BIA) is inexpensive, easy to use, and portable; thus BIA might be useful in sarcopenia investigations. However, a large variety of models have been commercially supplied by different companies, and for most consumer products, the equations estimating ALM are not disclosed...
July 19, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28753636/comparison-of-segmental-spinal-movement-control-in-adolescents-with-and-without-idiopathic-scoliosis-using-modified-pressure-biofeedback-unit
#14
Hong-Ji Luo, Shi-Xiang Lin, Shyi-Kuen Wu, Mei-Wun Tsai, Shwn-Jen Lee
BACKGROUND: Postural rehabilitation emphasizing on motor control training of segmental spinal movements has been proposed to effectively reduce the scoliotic spinal deformities in adolescent idiopathic scoliosis (AIS). However, information regarding the impairments of segmental spinal movement control involving segmental spinal stabilizers in adolescent idiopathic scoliosis remains limited. Examination of segmental spinal movement control may provide a window for investigating the features of impaired movement control specific to spinal segments that may assist in the development of physiotherapeutic management of AIS...
2017: PloS One
https://www.readbyqxmd.com/read/28744050/effect-of-standing-postural-deviations-on-trunk-and-hip-muscle-activity
#15
Ryo Fujitani, Takumi Jiromaru, Noriyuki Kida, Teruo Nomura
[Purpose] It is very important to consider effects that postural deviations has on muscle activity when treating low back pain. Therefore, activities of trunk and hip joint muscles in healthy adults while they attempted three postural conditions of neutral, sway-back, and lordosis was compared and evaluated in this study. [Subjects and Methods] The subjects comprised 17 healthy adult male volunteers. The muscle activity and spinal curve were measured while the subjects attempted different postural conditions (neutral, sway-back, and lordosis) as defined in the text...
July 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28736791/control-of-standing-balance-at-leaning-postures-with-functional-neuromuscular-stimulation-following-spinal-cord-injury
#16
Musa L Audu, Brooke M Odle, Ronald J Triolo
This study systematically explored the potential of applying feedback control of functional neuromuscular stimulation (FNS) for stabilizing various erect and leaning standing postures after spinal cord injury (SCI). Perturbations ranging from 2 to 6% body weight were applied to two subjects with motor complete thoracic level SCI who were proficient at standing with implanted multichannel neural stimulators to activate the ankle, knee, hip and trunk muscles. The subjects stood with four different postures: erect, forward, forward-right and forward-left...
July 24, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28709904/the-effects-of-gaze-stabilization-on-gait-parameters-in-individuals-with-parkinson-s-disease
#17
Rebecca J Reed-Jones, Douglas W Powell
The purpose of this study was to examine the effects of gaze fixation on head stabilization and gait during straight over ground walking in individuals with Parkinson's disease (PD). Eight individuals with PD (Age: 62.3±8.1 years) volunteered for the study. Full body kinematic data were collected at 120Hz using a Vicon motion capture system. Two visual conditions were used to determine the effects of gaze fixation: FREE gaze and FIXED gaze. During FIXED gaze, participants were required to fixate on a still target 13m ahead...
August 10, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28709588/postural-disorders-in-mouth-breathing-children-a-systematic-review
#18
REVIEW
Patricia Dayrell Neiva, Renata Noce Kirkwood, Polyana Leite Mendes, Karl Zabjek, Helena Gonçalves Becker, Sunita Mathur
BACKGROUND: Mouth breathing syndrome can cause sleep disturbances that compromise the performance of children in school. It might also cause postural abnormalities involving the head and cervical spine; however, the association between postural abnormalities and mouth breathing in children is unclear. OBJECTIVE: To assess the methodological quality of studies and determine if there is an association between mouth breathing and postural disorders in children. METHODS: Databases comprised MEDLINE, CINAHL, PEDro, LILACS, EMBASE and Cochrane Central Registrar of Controlled Trials...
July 5, 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28706360/osteoporosis-prevention-and-management
#19
Muralidhar V Pai
Osteoporosis, defined by BMD at the hip or lumbar spine that is less than or equal to 2.5 standard deviations below the mean BMD of a young-adult reference population, is the most common bone disease in humans affecting both sexes and all races. It's a silent killer affecting the quality of life due to fractures and postural changes. In osteoporosis there is an imbalance between bone formation and bone resorption in favor of latter. Preventive measures and treatments are available to combat this evil. Counseling is the integral part of prevention as well as treatment of osteoporosis...
August 2017: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/28701627/impact-of-keyboard-typing-on-the-morphological-changes-of-the-median-nerve
#20
Ping Yeap Loh, Wen Liang Yeoh, Hiroki Nakashima, Satoshi Muraki
OBJECTIVES: The primary objective was to investigate the effects of continuous typing on median nerve changes at the carpal tunnel region at two different keyboard slopes (0° and 20°). The secondary objective was to investigate the differences in wrist kinematics and wrist anthropometric changes when typing at the two different keyboard slopes. METHODS: Fifteen healthy right-handed young men were recruited. A randomized sequence of the conditions (control, typing I, and typing II) was assigned to the participants...
July 13, 2017: Journal of Occupational Health
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