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https://www.readbyqxmd.com/read/28449194/center-of-pressure-profiles-in-unilateral-compared-to-bilateral-end-stage-ankle-osteoarthritis-patients
#1
Jonathan R Gladish, Douglas W Powell, Lindsey E Allison, Robin M Queen
Ankle osteoarthritis compromises ankle joint stability in regards to static balance. Unilateral and bilateral osteoarthritis patients often exhibit different limb-loading patterns during static balance tasks. Symmetrical loading has been posited to improve balance performance. Therefore, the purpose of this study was to quantify balance performance in both ankle osteoarthritis patient groups. Twenty-two unilateral and twenty-one bilateral ankle osteoarthritis patients performed three 10-second quiet standing trials with their feet together...
April 27, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28444253/fear-of-falling-in-people-with-multiple-sclerosis-which-clinical-characteristics-are-important
#2
Hanan Khalil, Alham Al-Shorman, Khalid El-Salem, Nour Abdo, Alia A Alghwiri, Aseel Aburub, Sarah Shalabi, Firas Al-Mustafa
Background.: Fear of falling (FOF) is an important risk indicator for health related outcomes and quality of life in patients with multiple sclerosis (MS). However, factors associated with FOF in MS are not well investigated. Objectives.: This study was done to explore predictors of FOF in this population. Methods.: Seventy relapsing remitting patients with MS were evaluated. FOF was assessed using Fall Efficacy Scale-International (FES-I)...
April 21, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28442732/human-bipedal-instability-in-tree-canopy-environments-is-reduced-by-light-touch-fingertip-support
#3
L Johannsen, S R L Coward, G R Martin, A M Wing, A van Casteren, W I Sellers, A R Ennos, R H Crompton, S K S Thorpe
Whether tree canopy habitats played a sustained role in the ecology of ancestral bipedal hominins is unresolved. Some argue that arboreal bipedalism was prohibitively risky for hominins whose increasingly modern anatomy prevented them from gripping branches with their feet. Balancing on two legs is indeed challenging for humans under optimal conditions let alone in forest canopy, which is physically and visually highly dynamic. Here we quantify the impact of forest canopy characteristics on postural stability in humans...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28438514/components-of-standing-postural-control-evaluated-in-pediatric-balance-measures-a-scoping-review
#4
REVIEW
Kathryn M Sibley, Marla K Beauchamp, Karen Van Ooteghem, Marie Paterson, Kristy Dm Wittmeier
OBJECTIVE: To identify measures of standing balance validated in pediatric populations and determine the components of postural control captured in each tool. DATA SOURCES: Electronic searches of Medline, Embase, and CINAHL databases using key word combinations of postural balance/ equilibrium, psychometrics/ reproducibility of results/ predictive value of tests, child/ pediatrics; grey literature; and hand searches. STUDY SELECTION: Inclusion criteria were measures with a stated objective to assess balance, pediatric (<=18 years) populations, at least one psychometric evaluation, one standing task, standardized protocol and evaluation criteria, and published in English...
April 21, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28434472/tai-chi-with-mental-imagery-theory-improves-soleus-h-reflex-and-nerve-conduction-velocity-in-patients-with-type-2-diabetes
#5
Abdulrahman Alsubiheen, Jerrold Petrofsky, Noha Daher, Everett Lohman, Edward Balbas, Haneul Lee
OBJECTIVES: Diabetes is a disease that leads to damage to the peripheral nerves which may eventually cause balance instability. The purpose of this study was to determine the effect of 8 weeks of Tai Chi (TC) training combined with mental imagery (MI) on soleus H-reflex and nerve conduction velocity (NCV) of the sural and superficial peroneal nerves in people with diabetes. DESIGNS: Quasi-experimental, one group pretest-posttest design. SETTING: Human Research Laboratory...
April 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28428900/asymptomatic-severe-vagal-and-sympathetic-cardiac-denervation-in-holmes-adie-s-syndrome
#6
B Estañol, R C Callejas-Rojas, S Cortés, R Martínez-Memije, O Infante-Vázquez, G Delgado-García
A 40-year-old woman was found to have bilateral Adie's pupils and generalized muscle stretch areflexia. She did not have orthostatic hypotension but, in an ECG strip in the office, she appeared to have an almost fixed heart rate. We thus studied the heart rate variability (HRV) and the systolic blood pressure variability (SBPV) in supine and standing position and also during rhythmic breathing. We found a decreased HRV in the time domain with very low standard deviation in supine and standing position and during rhythmic breathing...
2017: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/28422306/development-of-a-novel-frailty-index-to-predict-mortality-in-patients-with-end-stage-liver-disease
#7
Jennifer C Lai, Kenneth E Covinsky, Jennifer L Dodge, W John Boscardin, Dorry L Segev, John P Roberts, Sandy Feng
BACKGROUND: Cirrhosis is characterized by muscle wasting, malnutrition, and functional decline that confer excess mortality not well quantified by the MELDNa score. We aimed to develop a frailty index to capture these extrahepatic complications of cirrhosis and enhance mortality prediction in cirrhotics. METHODS: Consecutive outpatients listed for LT at a single transplant center without MELD exceptions were assessed with candidate frailty measures. Best subset selection analyses with Cox regression identified subsets of frailty measures that predicted waitlist mortality (=death or delisting due to sickness)...
April 19, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28409395/spinal-and-corticospinal-pathways-are-differently-modulated-when-standing-at-the-bottom-and-the-top-of-a-three-step-staircase-in-young-and-older-adults
#8
Johanna Johannsson, Jacques Duchateau, Stéphane Baudry
PURPOSE: This study investigated the modulation of spinal (group Ia afferents) and corticospinal pathways when young (22.7 ± 1.3 years) and older adults (72.2 ± 7.9 years) stood at the bottom and at the top of a three-step staircase equipped with force platforms. METHOD: Changes in submaximal H-reflex amplitude (H 50) and slope of the H-reflex input-output relation (spinal pathway), and in amplitude of motor-evoked potentials (MEP) triggered by transcranial magnetic stimulation (corticospinal pathway) at two intensities (1...
April 13, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28409030/effects-of-multicomponent-exercise-on-functional-and-cognitive-parameters-of-hypertensive-patients-a-quasi-experimental-study
#9
Hélio José Coelho Junior, Bruno Rodrigues, Daniele Jardim Feriani, Ivan de Oliveira Gonçalves, Ricardo Yukio Asano, Samuel da Silva Aguiar, Marco Carlos Uchida
Purpose. The present study aimed to investigate the impact of a 6-month multicomponent exercise program (MCEP) on physical function and cognitive parameters of normotensive (NTS) and hypertensive (HTS) older patients and verify if age can influence the adaptations in response to the exercise. Methods. A total of 218 subjects, 101 NTS and 117 HTS, were recruited and underwent functional and cognitive evaluations before and after six months of a MCEP. The program of exercise was performed twice a week, for 26 weeks...
2017: Journal of Aging Research
https://www.readbyqxmd.com/read/28407522/physiological-arousal-accompanying-postural-responses-to-external-perturbations-after-stroke
#10
C L Pollock, M G Carpenter, M A Hunt, A Gallina, T M Vieira, T D Ivanova, S J Garland
OBJECTIVE: The purpose of this study was to examine simultaneously the level of physiological arousal and the postural response to external perturbations in people post-stroke compared to age-matched controls to build a more comprehensive understanding of the effect of stroke on postural control and balance self-efficacy. METHODS: Participants stood with each foot on separate force platforms. Ten applications of loads of 2% body weight at the hips perturbed the participant anteriorly under two conditions: investigator-triggered or self-triggered (total 20)...
March 18, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28401387/quantifying-microplastic-pollution-on-sandy-beaches-the-conundrum-of-large-sample-variability-and-spatial-heterogeneity
#11
Mara Fisner, Alessandra P Majer, Danilo Balthazar-Silva, Daniel Gorman, Alexander Turra
Despite the environmental risks posed by microplastic pollution, there are presently few standardized protocols for monitoring these materials within marine and coastal habitats. We provide a robust comparison of methods for sampling microplastics on sandy beaches using pellets as a model and attempt to define a framework for reliable standing stock estimation. We performed multiple comparisons to determine: (1) the optimal size of sampling equipment, (2) the depth to which samples should be obtained, (3) the optimal sample resolution for cross-shore transects, and (4) the number of transects required to yield reproducible along-shore estimates across the entire sections of a beach...
April 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28401131/perceptions-and-experiences-of-a-gender-gap-at-a-canadian-research-institute-and-potential-strategies-to-mitigate-this-gap-a-sequential-mixed-methods-study
#12
Alekhya Mascarenhas, Julia E Moore, Andrea C Tricco, Jemila Hamid, Caitlin Daly, Julie Bain, Sabrina Jassemi, Tara Kiran, Nancy Baxter, Sharon E Straus
BACKGROUND: The gender gap in academia is long-standing. Failure to ensure that our academic faculty reflect our student pool and national population deprives Canada of talent. We explored the gender distribution and perceptions of the gender gap at a Canadian university-affiliated, hospital-based research institute. METHODS: We completed a sequential mixed-methods study. In phase 1, we used the research institute's registry of scientists (1999-2014) and estimated overall prevalence of a gender gap and the gap with respect to job description (e...
January 2017: CMAJ Open
https://www.readbyqxmd.com/read/28395983/effects-of-holding-an-external-load-on-the-standing-balance-of-older-and-younger-adults-with-and-without-chronic-low-back-pain
#13
Leonardo Shigaki, Edgar Ramos Vieira, André Wilson de Oliveira Gil, Cynthia Gobbi Alves Araújo, Mariana Zingari Carmargo, Leandro Amaral Sturion, Marcio Roǵerio de Oliveira, Rubens A da Silva
OBJECTIVE: The purpose of this study was to assess the effect of holding an external load on the standing balance of younger and older adults with and without chronic low back pain (CLBP). METHODS: Twenty participants with and 20 without CLBP participated in the study. Each group contained 10 younger (50% men) and 10 older adults (50% men). Participants were instructed to look straight ahead while standing on a force platform during two 120-second trials with and without holding an external load (10% of body mass)...
April 8, 2017: Journal of Manipulative and Physiological Therapeutics
https://www.readbyqxmd.com/read/28393125/planning-nature-in-urbanized-countries-an-analysis-of-monetary-and-non-monetary-impacts-of-conservation-policy-scenarios-in-the-netherlands
#14
Frans J Sijtsma, Willem G M van der Bilt, Arjen van Hinsberg, Bart de Knegt, Martijn van der Heide, Hans Leneman, René Verburg
Planning and conserving nature areas are challenging tasks in urbanized and intensively used countries like the Netherlands. This paper supports decision making and public policy debate about these tasks in both an empirical and a methodological way. Empirically, we explore policy alternatives by determining the potential consequences of different nature policy scenarios in the Netherlands. Methodologically, we employ a mixed monetary and non-monetary evaluation method known as multi-criteria cost-benefit analysis (MCCBA)...
March 2017: Heliyon
https://www.readbyqxmd.com/read/28393118/postural-compensation-strategy-depends-on-the-severity-of-vestibular-damage
#15
Lara A Thompson, Csilla Haburcakova, Richard F Lewis
The purpose of this study was to investigate the effects of various levels of vestibular function on balance in two, free-standing rhesus monkeys. We hypothesized that postural control strategy depended on the severity of vestibular damage. More specifically, that increased muscle stiffness (via short-latency mechanisms) was adequate to compensate for mild damage, but long-latency mechanisms must be utilized for more severe vestibular damage. One animal was studied for pre-ablated and mild vestibular dysfunction states, while a second animal was studied in a pre-ablated and severe vestibular dysfunction state...
March 2017: Heliyon
https://www.readbyqxmd.com/read/28392324/the-reliability-and-validity-of-the-timed-up-and-go-motor-test-for-people-with-chronic-stroke
#16
Peggy P K Chan, Joyce I F Si Tou, Mimi M Y Tse, Shamay S M Ng
OBJECTIVES: To examine: (1) the intra-rater, inter-rater and test-retest reliabilities of the timed up and go (motor) test (TUGmotor) in terms of the number of steps taken and completion time with a chronic stroke population; (2) the relationship between stroke-specific impairments and the number of steps taken in the test and the completion time; (3) the minimal detectable change in TUGmotor times; and (4) the cut-off time which best discriminates the performance of people with stroke from that of healthy older adults...
April 6, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28387692/the-role-of-sensory-augmentation-for-people-with-vestibular-deficits-real-time-balance-aid-and-or-rehabilitation-device
#17
K H Sienko, S L Whitney, W J Carender, C Wall
This narrative review highlights findings from the sensory augmentation field for people with vestibular deficits and addresses the outstanding questions that are critical to the translation of this technology into clinical and/or personal use. Prior research has demonstrated that the real-time use of visual, vibrotactile, auditory, and multimodal sensory augmentation technologies can improve balance during static and dynamic stance tasks within a laboratory setting. However, its application in improving gait requires additional investigation, as does its efficacy as a rehabilitation device for people with vestibular deficits...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/28387687/vibro-tactile-and-auditory-balance-biofeedback-changes-muscle-activity-patterns-possible-implications-for-vestibular%C3%A2-implants
#18
John H J Allum, Flurin Honegger
BACKGROUND: The two different types of balance prostheses being developed, implants and vibro-tactile/auditory feedback prostheses, rely on different measures to prove efficacy (those based on vestibular ocular reflexes versus balance control, respectively). Here we provide evidence that examining muscle activity might provide a useful alternative for both. METHODS: The muscle activity of 6 bilateral vestibular loss (BVL) and 7 age-matched healthy controls (HC) was examined while standing eyes closed on a foam support surface...
2017: Journal of Vestibular Research: Equilibrium & Orientation
https://www.readbyqxmd.com/read/28381488/increased-neuromuscular-consistency-in-gait-and-balance-after-partnered-dance-based-rehabilitation-in-parkinson-s-disease
#19
Jessica L Allen, J Lucas McKay, Andrew Sawers, Madeleine Eve Hackney, Lena H Ting
Here we examined changes in muscle coordination associated with improved motor performance after partnered, dance-based rehabilitation in individuals with mild-moderate idiopathic Parkinson's disease. Using motor module (a.k.a muscle synergy) analysis we identified changes in the modular control of overground walking and standing reactive balance that accompanied clinically meaningful improvements on behavioral measures of balance, gait, and disease symptoms after three-weeks of daily Adapted Tango classes...
April 5, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28377110/the-association-of-neuromuscular-attributes-with-performance-based-mobility-among-community-dwelling-older-adults-with-symptomatic-lumbar-spinal-stenosis
#20
Catherine T Schmidt, Rachel E Ward, Pradeep Suri, Dan K Kiely, Ni Pensheng, Dennis E Anderson, Jonathan F Bean
OBJECTIVE: To identify differences in health factors, neuromuscular attributes and performance-based mobility among community-dwelling older adults with symptomatic lumbar spinal stenosis (SLSS); and to determine which neuromuscular attributes are associated with performance-based measures of mobility. We hypothesized that: (1) community-dwelling older adults with SLSS would have poorer health, greater neuromuscular impairment and worse mobility; and (2) greater impairment in trunk extensor muscle endurance, leg strength, leg speed and knee flexion range of motion (ROM) would be associated with performance-based mobility...
April 1, 2017: Archives of Physical Medicine and Rehabilitation
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