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https://www.readbyqxmd.com/read/28550294/advantages-and-problems-of-nonlinear-methods-applied-to-analyze-physiological-time-signals-human-balance-control-as-an-example
#1
Wolfram Müller, Alexander Jung, Helmut Ahammer
Physiological processes are regulated by nonlinear dynamical systems. Various nonlinear measures have frequently been used for characterizing the complexity of fractal time signals to detect system features that cannot be derived from linear analyses. We analysed human balance dynamics ranging from simple standing to balancing on one foot with closed eyes to study the inherent methodological problems when applying fractal dimension analysis to real-world signals. Higuchi dimension was used as an example. Choice of measurement and analysis parameters has a distinct influence on the computed dimension...
May 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28549902/does-corrective-spine-surgery-improve-the-standing-balance-in-patients-with-adult-spinal-deformity
#2
Mitsuru Yagi, Hideaki Ohne, Shinjiro Kaneko, Masafumi Machida, Yoshiyuki Yato, Takashi Asazuma
BACKGROUND CONTEXT: The effect of corrective spine surgery on standing stability in adult spinal deformity (ASD) has not been fully documented. PURPOSE: To compare pre- and postoperative standing balance and posture in patients with ASD. STUDY DESIGN/SETTING: Prospective case series. PATIENT SAMPLE: Standing balance before and after corrective spine surgery was compared in 35 consecutive female patients with ASD (65...
May 23, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28548346/the-effect-of-crate-height-on-the-behavior-of-female-turkeys-during-commercial-pre-slaughter-transportation
#3
Guido Di Martino, Katia Capello, Anna Lisa Stefani, Luca Tripepi, Angelica Garbo, Marina Speri, Matteo Trolese, Michele Brichese, Stefano Marangon, Lebana Bonfanti
Limited information is available on suitable height of transport crates for turkeys. We compared behaviors and physiological indicators of four groups of 10 female turkeys each confined in either conventional (38.5 cm height) or experimental (77 cm height) crates during six commercial pre-slaughter transportations for 86 km (76 ± 4 min) along two tracts with one-lane streets, crossroads, bends, roundabouts (S1 and S2) and a highway tract (H) between S1 and S2. Only 36% of birds in the higher crates maintained a standing position...
May 26, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28539876/plantar-sole-unweighting-alters-the-sensory-transmission-to-the-cortical-areas
#4
Laurence Mouchnino, Olivia Lhomond, Clément Morant, Pascale Chavet
It is well established that somatosensory inputs to the cortex undergo an early and a later stage of processing. The later has been shown to be enhanced when the earlier transmission decreased. In this framework, mechanical factors such as the mechanical stress to which sensors are subjected when wearing a loaded vest are associated with a decrease in sensory transmission. This decrease is in turn associated with an increase in the late sensory processes originating from cortical areas. We hypothesized that unweighting the plantar sole should lead to a facilitation of the sensory transmission...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28539694/a-retrospective-analysis-of-post-stroke-berg-balance-scale-scores-how-should-normal-and-at-risk-scores-be-interpreted
#5
Kara K Patterson, Elizabeth Inness, William E McIlroy, Avril Mansfield
Purpose: The Berg Balance Scale (BBS) is a performance-based measure of standing balance commonly used by clinicians working with individuals post-stroke. Performance on the BBS can be influenced by compensatory strategies, but measures derived from two force plates can isolate compensatory strategies and thus better indicate balance impairment. This study examined BBS scores that reflect "normal" and disordered balance with respect to dual force-plate measures of standing balance in individuals post-stroke...
2017: Physiotherapy Canada. Physiothérapie Canada
https://www.readbyqxmd.com/read/28539457/mechanical-evidence-that-flamingos-can-support-their-body-on-one-leg-with-little-active-muscular-force
#6
Young-Hui Chang, Lena H Ting
Flamingos (Phoenicopteridae) often stand and sleep on one leg for long periods, but it is unknown how much active muscle contractile force they use for the mechanical demands of standing on one leg: body weight support and maintaining balance. First, we demonstrated that flamingo cadavers could passively support body weight on one leg without any muscle activity while adopting a stable, unchanging, joint posture resembling that seen in live flamingos. By contrast, the cadaveric flamingo could not be stably held in a two-legged pose, suggesting a greater necessity for active muscle force to stabilize two-legged versus one-legged postures...
May 2017: Biology Letters
https://www.readbyqxmd.com/read/28537247/genomic-variation-associated-with-local-adaptation-of-weedy-rice-during-de-domestication
#7
Jie Qiu, Yongjun Zhou, Lingfeng Mao, Chuyu Ye, Weidi Wang, Jianping Zhang, Yongyi Yu, Fei Fu, Yunfei Wang, Feijian Qian, Ting Qi, Sanling Wu, Most Humaira Sultana, Ya-Nan Cao, Yu Wang, Michael P Timko, Song Ge, Longjiang Fan, Yongliang Lu
De-domestication is a unique evolutionary process by which domesticated crops are converted into 'wild predecessor like' forms. Weedy rice (Oryza sativa f. spontanea) is an excellent model to dissect the molecular processes underlying de-domestication. Here, we analyse the genomes of 155 weedy and 76 locally cultivated rice accessions from four representative regions in China that were sequenced to an average 18.2 × coverage. Phylogenetic and demographic analyses indicate that Chinese weedy rice was de-domesticated independently from cultivated rice and experienced a strong genetic bottleneck...
May 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28536117/the-association-between-whole-body-sagittal-balance-and-risk-of-falls-among-elderly-patients-seeking-treatment-for-back-pain
#8
J Kim, J Y Hwang, J K Oh, M S Park, S W Kim, H Chang, T-H Kim
OBJECTIVES: The objective of this study was to assess the association between whole body sagittal balance and risk of falls in elderly patients who have sought treatment for back pain. Balanced spinal sagittal alignment is known to be important for the prevention of falls. However, spinal sagittal imbalance can be markedly compensated by the lower extremities, and whole body sagittal balance including the lower extremities should be assessed to evaluate actual imbalances related to falls...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28533616/discriminative-and-predictive-validity-of-the-short-form-activities-specific-balance-confidence-scale-for-predicting-fall-of-stroke-survivors
#9
SeungHeon An, Yunbok Lee, DongGeon Lee, Ki-Hun Cho, GyuChang Lee, Dong-Sik Park
[Purpose] The present study aimed to investigate the discriminative validity of the short-form activities-specific balance confidence scale (ABC scale) in predicting falls, and its validity. [Subjects and Methods] 43 stroke survivors were identified as a group with a history of multiple falls (faller group) and a group without or with a history of one falls (non-faller group). The balance confidence was examined using the ABC scale and the short-form ABC scale. Functional abilities were examined with Fugl-Meyer assessment, sit-to-stand test, and Berg balance scale...
April 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28532866/the-effects-of-12-weeks-pilates-inspired-exercise-training-on-functional-performance-in-older-women-a-randomized-clinical-trial
#10
Natália Donzeli Vieira, Daniela Testa, Paula Cristine Ruas, Tânia de Fátima Salvini, Aparecida Maria Catai, Ruth Caldeira Melo
BACKGROUND: Recent scientific evidence supports the benefits of Pilates exercises on postural balance and muscle strength of older persons. However, their effects on other aspects of physical fitness, which are also important for independent living in older age, are still unknown. OBJECTIVE: To investigate the effects of a 12-week Pilates-inspired exercise program on the functional performance of community-dwelling older women. METHODS: Forty community-dwelling older women were randomly enrolled in a Pilates-inspired exercise training (2 times/week, 60 min/session) (PG, n = 21, 66...
April 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28532417/instrumented-balance-and-walking-assessments-in-persons-with-multiple-sclerosis-show-strong-test-retest-reliability
#11
Jordan J Craig, Adam P Bruetsch, Sharon G Lynch, Fay B Horak, Jessie M Huisinga
BACKGROUND: There is a need for objective movement assessment for clinical research trials aimed at improving gait and balance in persons with multiple sclerosis (PwMS). Wireless inertial sensors can accurately measure numerous walking and balance parameters but these measures require evaluation of reliability in PwMS. The current study determined the test-retest reliability of wireless inertial sensor measures obtained during an instrumented standing balance test and an instrumented Timed Up and Go test in PwMS...
May 22, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28528460/sensory-and-motoric-influences-on-attention-dynamics-during-standing-balance-recovery-in-young-and-older-adults
#12
Mark S Redfern, April J Chambers, J Richard Jennings, Joseph M Furman
This study investigated the impact of attention on the sensory and motor actions during postural recovery from underfoot perturbations in young and older adults. A dual-task paradigm was used involving disjunctive and choice reaction time (RT) tasks to auditory and visual stimuli at different delays from the onset of two types of platform perturbations (rotations and translations). The RTs were increased prior to the perturbation (preparation phase) and during the immediate recovery response (response initiation) in young and older adults, but this interference dissipated rapidly after the perturbation response was initiated (<220 ms)...
May 20, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28526182/pharmacologic-management-of-type-2-diabetes-mellitus-available-therapies
#13
James Thrasher
Choices for the treatment of type 2 diabetes mellitus (T2DM) have multiplied as our understanding of the underlying pathophysiologic defects has evolved. Treatment should target multiple defects in T2DM and follow a patient-centered approach that considers factors beyond glycemic control, including cardiovascular risk reduction. The American Association of Clinical Endocrinologists/American College of Endocrinology and the American Diabetes Association recommend an initial approach consisting of lifestyle changes and monotherapy, preferably with metformin...
May 12, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28524852/surface-chemistry-governs-cellular-tropism-of-nanoparticles-in-the-brain
#14
Eric Song, Alice Gaudin, Amanda R King, Young-Eun Seo, Hee-Won Suh, Yang Deng, Jiajia Cui, Gregory T Tietjen, Anita Huttner, W Mark Saltzman
Nanoparticles are of long-standing interest for the treatment of neurological diseases such as glioblastoma. Most past work focused on methods to introduce nanoparticles into the brain, suggesting that reaching the brain interstitium will be sufficient to ensure therapeutic efficacy. However, optimized nanoparticle design for drug delivery to the central nervous system is limited by our understanding of their cellular deposition in the brain. Here, we investigated the cellular fate of poly(lactic acid) nanoparticles presenting different surface chemistries, after administration by convection-enhanced delivery...
May 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28524264/maternal-occupational-physical-activity-and-risk-for-orofacial-clefts
#15
A J Agopian, Jihye Kim, Peter H Langlois, Laura Lee, Lawrence W Whitehead, Elaine Symanski, Michele L Herdt, George L Delclos
OBJECTIVES: To perform a case-control study of maternal occupational physical activity and risk for orofacial clefts in Texas during 1999-2009. METHODS: We used logistic regression to assess 14 measures of physical activity estimated from a job exposure matrix, using the maternal occupation reported on the birth certificate, among 887 children with cleft lip with or without cleft palate (CLP), 436 children with cleft palate only (CP), and 1932 controls. RESULTS: After adjusting for several potential confounders, seven measures of physical activity (as a categorical and/or continuous variable) were significantly associated with CLP, CP, or both...
May 19, 2017: American Journal of Industrial Medicine
https://www.readbyqxmd.com/read/28521148/dual-task-interference-on-postural-sway-postural-transitions-and-gait-in-people-with-parkinson-s-disease-and-freezing-of-gait
#16
Ana Claudia de Souza Fortaleza, Martina Mancini, Patty Carlson-Kuhta, Laurie A King, John G Nutt, Eliane Ferrari Chagas, Ismael Forte Freitas, Fay B Horak
Freezing of gait (FoG) is associated with less automatic gait and more impaired cognition, balance and postural transitions compared to people with PD who do not have FoG. However, it is unknown whether dual-task cost during postural sway, postural transitions (such as gait initiation and turning), and gait are more in subjects with Parkinson's disease (PD) who have freezing of gait (FoG+) compared to those who do not have FoG (FoG-). Here, we hypothesized that the effects of a cognitive dual task on postural sway, postural transitions and gait would be larger in FoG+ than FoG-...
May 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28515799/implementing-mindfulness-in-the-mainstream-making-the-path-by-walking-it
#17
Rebecca S Crane
There is expanding interest in mindfulness-based programs (MBPs) within the mainstream. While there are research gaps, there is empirical evidence for these developments. Implementing new evidence into practice is always complex and difficult. Particular complexities and tensions arise when implementing MBPs in the mainstream. MBPs are emerging out of the confluence of different epistemologies-contemplative teaching and practice, and contemporary Western empiricism and culture. In the process of navigating implementation and integrity, and developing a professional practice context for this emerging field, the diverse influences within this confluence need careful attention and thought...
2017: Mindfulness
https://www.readbyqxmd.com/read/28508890/attentional-requirements-of-postural-control-in-people-with-spinal-cord-injury-the-effect-of-dual-task
#18
C M Tse, M G Carpenter, T Liu-Ambrose, A E Chisholm, T Lam
STUDY DESIGN: Cross-sectional study. OBJECTIVES: To investigate the attentional requirements for maintaining standing balance in people with spinal cord injury (SCI) using a dual-task paradigm and to compare standing balance performance between SCI and able-bodied (AB) controls. SETTING: LaboratoryMethods:Nine adults with incomplete SCI, who were able to stand unassisted were recruited, along with eight AB controls. Subjects performed a dual task involving counting backwards by 3 s out loud while standing with eyes open or closed...
May 16, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28503450/balance-assessment-in-subacute-stroke-patients-using-the-balance-control-trainer-balpro
#19
Jin Won Song, Jong Min Kim, Youn Soo Cheong, Yang-Soo Lee, Seong Min Chun, Yu-Sun Min, Tae-Du Jung
OBJECTIVE: To demonstrate the efficacy of the balance control trainer (BCT), developed for training patients with balance problems, as a balance assessment tool in subacute stroke patients. METHODS: A prospective cross-sectional study was carried out on 38 subacute stroke patients in their first episode of a stroke, and having the ability to maintain a standing position without aid for at least 5 minutes. Patients were assessed using the BCT (BalPro) 43.7±35.7 days after stroke...
April 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28501732/asymmetrical-stabilization-and-mobilization-exploited-during-static-single-leg-stance-and-goal-directed-kicking
#20
Adam C King, Zheng Wang
The motor control properties of the right and left legs are dependent on the stabilization and mobilization features of the motor tasks. The current investigation examined the right and left leg control differences - interlateral asymmetries - during static single leg stance and dynamic goal directed kicking with an emphasis of the asymmetrical stabilization and mobilization components of movements. Ten young, healthy, right-leg preferred individuals with minimal kicking experience completed both tests on each limb...
May 11, 2017: Human Movement Science
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