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https://www.readbyqxmd.com/read/28213167/the-effect-of-peripheral-neuropathy-on-lower-limb-muscle-strength-in-diabetic-individuals
#1
Jean P Ferreira, Cristina D Sartor, Ângela M O Leal, Isabel C N Sacco, Tatiana O Sato, Ivana L Ribeiro, Alice S Soares, Jonathan E Cunha, Tania F Salvini
BACKGROUND: Skeletal muscle strength is poorly described and understood in diabetic participants with diabetic peripheral neuropathy. This study aimed to investigate the extensor and flexor torque of the knee and ankle during concentric, eccentric, and isometric contractions in men with diabetes mellitus type 2 with and without diabetic peripheral neuropathy. METHODS: Three groups of adult men (n=92), similar in age, body mass index, and testosterone levels, were analyzed: 33 non-diabetic controls, 31 with type 2 diabetes mellitus, and 28 with diabetic peripheral neuropathy...
February 9, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28211820/effectiveness-and-feasibility-of-eccentric-and-task-oriented-strength-training-in-individuals-with-stroke
#2
Mireille A Folkerts, Juha M Hijmans, Anne L Elsinghorst, Yvon Mulderij, Alessio Murgia, Rienk Dekker
BACKGROUND: Strength training can increase function in individuals with stroke. However it is unclear which type of strength training is most effective and feasible. OBJECTIVE: To assess the effect and feasibility of an intervention combining eccentric and task-oriented strength training in individuals with chronic stroke. METHODS: Eleven participants were randomly assigned to a group first receiving four weeks of eccentric strength training and then four weeks of task-oriented strength training (EST-TOST) or vice versa (TOST-EST)...
February 15, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28211185/a-comparison-of-goldmann-iii-v-and-spatially-equated-test-stimuli-in-visual-field-testing-the-importance-of-complete-and-partial-spatial-summation
#3
Jack Phu, Sieu K Khuu, Barbara Zangerl, Michael Kalloniatis
PURPOSE: Goldmann size V (GV) test stimuli are less variable with a greater dynamic range and have been proposed for measuring contrast sensitivity instead of size III (GIII). Since GIII and GV operate within partial summation, we hypothesise that actual GV (aGV) thresholds could predict GIII (pGIII) thresholds, facilitating comparisons between actual GIII (aGIII) thresholds with pGIII thresholds derived from smaller GV variances. We test the suitability of GV for detecting visual field (VF) loss in patients with early glaucoma, and examine eccentricity-dependent effects of number and depth of defects...
March 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28211176/peripheral-aberrations-in-adult-hyperopes-emmetropes-and-myopes
#4
Uchechukwu L Osuagwu, Marwan Suheimat, David A Atchison
PURPOSE: To determine differences in peripheral aberrations in hyperopic, emmetropic and myopic groups. METHODS: Cycloplegic peripheral aberrations for 5 mm pupils were measured at 39 locations across 42° × 32° of right eye visual fields with a COAS-HD Hartmann-Shack aberrometer in nine hyperopes (mean age 29 ± 5 years, spherical equivalent refraction M + 1.47 ± 0.58 D), 20 emmetropes (28 ± 7 years, +0.06 ± 0.36 D) and 20 myopes (27 ± 6 years, -2...
March 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28210504/comparison-of-maximum-stretch-forces-between-femtosecond-laser-assisted-capsulotomy-and-continuous-curvilinear-capsulorhexis
#5
Mari Takagi, Takashi Kojima, Kei Ichikawa, Yoshiki Tanaka, Yukihito Kato, Rie Horai, Akeno Tamaoki, Kazuo Ichikawa
The current study reports comparing the postoperative mechanical properties of the anterior capsule between femtosecond laser capsulotomy (FLC) and continuous curvilinear capsulorhexis (CCC) of variable size and shape in porcine eyes. All CCCs were created using capsule forceps. Irregular or eccentric CCCs were also created to simulate real cataract surgery. For FLC, capsulotomies 5.3 mm in diameter were created using the LenSx® (Alcon) platform. Fresh porcine eyes were used in all experiments. The edges of the capsule openings were pulled at a constant speed using two L-shaped jigs...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28203319/iron-supplementation-effects-on-redox-status-following-aseptic-skeletal-muscle-trauma-in-adults-and-children
#6
Chariklia K Deli, Ioannis G Fatouros, Vassilis Paschalis, Athanasios Tsiokanos, Kalliopi Georgakouli, Athanasios Zalavras, Alexandra Avloniti, Yiannis Koutedakis, Athanasios Z Jamurtas
Exercise-induced skeletal muscle microtrauma is characterized by loss of muscle cell integrity, marked aseptic inflammatory response, and oxidative stress. We examined if iron supplementation would alter redox status after eccentric exercise. In a randomized, double blind crossover study, that was conducted in two cycles, healthy adults (n = 14) and children (n = 11) received daily either 37 mg of elemental iron or placebo for 3 weeks prior to and up to 72 h after an acute eccentric exercise bout. Blood was drawn at baseline, before exercise, and 72 h after exercise for the assessment of iron status, creatine kinase activity (CK), and redox status...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28195245/ependymoma-with-diffuse-signet-ring-features-report-of-a-case-and-review-of-the-literature
#7
L Cima, S Beccari, C Ghimenton, G Pinna, A Beltramello, M Chilosi, M Brunelli, A Eccher
Signet-ring cell ependymoma is a rare variant of ependymoma with only seven cases described in literature. Biological behavior and prognosis of this entity are not well-known until now. We present a case of a 49-year-old female with a history of headache and gait instability. Magnetic resonance imaging showed an upper cervical tumor with cystic component and mural nodule. The patient underwent surgery. Microscopically some cells displayed an eccentric nucleus compressed to the periphery by vacuolated cytoplasm...
March 2016: Pathologica
https://www.readbyqxmd.com/read/28194732/late-post-avr-progression-of-bicuspid-aortopathy-link-to-hemodynamics
#8
Shiho Naito, Tatiana Gross, Kushtrim Disha, Yskert von Kodolitsch, Hermann Reichenspurner, Evaldas Girdauskas
BACKGROUND AND AIM OF THE STUDY: The ascending aortic dilatation may progress after aortic valve replacement (AVR) in bicuspid aortic valve (BAV) patients. Our aim was to evaluate rheological flow patterns and histological characteristics of the aneurysmal aorta in BAV patients at the time of reoperative aortic surgery. MATERIALS AND METHODS: 13 patients (mean age: 42 ± 9 years, 10 (77%) male) with significant progression of proximal aortopathy after isolated AVR surgery for BAV disease (i...
February 13, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28193999/human-skeletal-muscle-plasmalemma-alters-its-structure-to-change-its-ca-2-handling-following-heavy-load-resistance-exercise
#9
Tanya R Cully, Robyn M Murphy, Llion Roberts, Truls Raastad, Robert G Fassett, Jeff S Coombes, Isuru D Jayasinghe, Bradley S Launikonis
High-force eccentric exercise results in sustained increases in cytoplasmic Ca(2+) levels ([Ca(2+)]cyto), which can cause damage to the muscle. Here we report that a heavy-load strength training bout greatly alters the structure of the membrane network inside the fibres, the tubular (t-) system, causing the loss of its predominantly transverse organization and an increase in vacuolation of its longitudinal tubules across adjacent sarcomeres. The transverse tubules and vacuoles displayed distinct Ca(2+)-handling properties...
February 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28192829/tens-alleviates-muscle-weakness-attributable-to-attenuation-of-ia-afferents
#10
Y Konishi, P J McNair, D A Rice
Quadriceps weakness is a notable problem following knee damage. Research has shown effectiveness of TENS in improving Quadriceps weakness associated with arthrogenic muscle inhibition. However, these studies were not focused upon short term delivery of TENS, nor did they examine the potential mechanism(s). The present study examined the effect of 25-30 s of TENS upon weakness induced temporarily by a prolonged vibration. Subjects performed eccentric MVCs under 2 conditions (TENS and no-TENS). First, MVC was measured at baseline...
February 13, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28192092/peripheral-oculomotor-training-in-individuals-with-healthy-visual-systems-effects-of-training-and-training-transfer
#11
Dylan Rose, Peter Bex
Individuals with pathological or simulated central visual field loss can be trained to use a preferred retinal locus (PRL) as a substitute for their non-functioning fovea. The functional benefits of a stable PRL are well documented, but little is known about oculomotor adaptations during PRL acquisition or transfer of training to another location in response to real or simulated disease progression. In this study, eight normally-sighted observers were trained to use a pseudo-PRL (pPRL) at one of two locations by guiding an eccentrically placed, gaze-contingent ring over a fixation target...
February 9, 2017: Vision Research
https://www.readbyqxmd.com/read/28190607/patient-specific-assessment-of-hemodynamics-by-computational-fluid-dynamics-in-patients-with-bicuspid-aortopathy
#12
Naoyuki Kimura, Masanori Nakamura, Kenji Komiya, Satoshi Nishi, Atsushi Yamaguchi, Osamu Tanaka, Yoshio Misawa, Hideo Adachi, Koji Kawahito
OBJECTIVE: Hemodynamics related to eccentric blood flow may factor into the development of bicuspid aortic valve aortopathy. We investigated wall shear stress distribution by means of magnetic resonance imaging-based computational fluid dynamics in patients with a bicuspid aortic valve. METHODS: Included were 12 patients with a bicuspid aortic valve (aortic stenosis, n = 11; root enlargement, n = 1). Three patients with a normal tricuspid aortic valve (arch aneurysm, n = 1; descending aortic aneurysm, n = 2) were included for comparison...
January 11, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28187372/symptom-overreporting-and-dissociative-experiences-a-qualitative-review
#13
REVIEW
H Merckelbach, I Boskovic, D Pesy, M Dalsklev, S J Lynn
We discuss a phenomenon that has received little attention to date in research on dissociative phenomena, namely that self-reports of these phenomena overlap with the tendency to overendorse eccentric items. We review the literature documenting the dissociation-overreporting link and then briefly discuss various interpretations of this link: (1) overreporting is an artifact of measuring dissociative symptoms; (2) dissociative psychopathology engenders overreporting of eccentric symptoms through fantasy proneness or impairments in internal monitoring; (3) an overreporting response style as is evident in malingerers, for example, promotes reports of dissociative symptoms...
February 7, 2017: Consciousness and Cognition
https://www.readbyqxmd.com/read/28186834/elevated-knee-joint-kinetics-and-reduced-ankle-kinetics-are-present-during-jogging-and-hopping-after-achilles-tendon-ruptures
#14
Richard W Willy, Annelie Brorsson, Hayley C Powell, John D Willson, Roy Tranberg, Karin Grävare Silbernagel
BACKGROUND: Deficits in plantarflexor function are common after an Achilles tendon rupture. These deficits may result in an altered distribution of joint loads during lower extremity tasks. HYPOTHESIS: We hypothesized that, regardless of treatment, the Achilles tendon-ruptured limb would exhibit deficits in ankle kinematics and joint power while exhibiting elevated knee joint power and patellofemoral joint loads during walking, jogging, and hopping. We further hypothesized that this loading pattern would be most evident during jogging and hopping...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28186094/obliquity-paced-climate-change-recorded-in-antarctic-debris-covered-glaciers
#15
Sean L Mackay, David R Marchant
The degree to which debris-covered glaciers record past environmental conditions is debated. Here we describe a novel palaeoclimate archive derived from the surface morphology and internal debris within cold-based debris-covered glaciers in Antarctica. Results show that subtle changes in mass balance impart major changes in the concentration of englacial debris and corresponding surface topography, and that over the past ∼220 ka, at least, the changes are related to obliquity-paced solar radiation, manifest as variations in total summer energy...
February 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/28185809/hip-strength-and-range-of-motion-normal-values-from-a-professional-football-league
#16
Andrea B Mosler, Kay M Crossley, Kristian Thorborg, Rod J Whiteley, Adam Weir, Andreas Serner, Per Hölmich
OBJECTIVES: To determine the normal profiles for hip strength and range of motion (ROM) in a professional football league in Qatar, and examine the effect of leg dominance, age, past history of injury, and ethnicity on these profiles. DESIGN: Cross-sectional cohort study. METHODS: Participants included 394 asymptomatic, male professional football players, aged 18-40 years. Strength was measured using a hand held dynamometer with an eccentric test in side-lying for hip adduction and abduction, and the squeeze test in supine with 45° hip flexion...
August 23, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28182968/measuring-postural-control-during-mini-squat-posture-in-men-with-early-knee-osteoarthritis
#17
M Petrella, K Gramani-Say, P R M S Serrão, G C Lessi, J A Barela, R P Carvalho, S M Mattiello
Studies have suggested a compromised postural control in individuals with knee osteoarthritis (OA) evidenced by larger and faster displacement of center of pressure (COP). However, quantification of postural control in the mini-squat posture performed by patients with early knee OA and its relation to muscle strength and self-reported symptoms have not been investigated. The main aim of this cross-sectional, observational, controlled study was to determine whether postural control in the mini-squat posture differs between individuals with early knee OA and a control group (CG) and verify the relation among knee extensor torque (KET) and self-reported physical function, stiffness and pain...
February 6, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28182476/evolving-the-keys-to-visual-crowding
#18
Erik Van der Burg, Christian N L Olivers, John Cass
Peripheral vision can be severely impaired by nearby clutter. Decades of research using sparse displays have established that this phenomenon, known as visual crowding, follows Bouma's rule: Interference occurs for target-distractor separations up to half the target's eccentricity. Although considered a fundamental constraint on human vision, it is unclear whether Bouma's rule holds in dense heterogeneous visual environments. Using a genetic algorithm we investigated crowding in densely cluttered displays. Participants were instructed to identify the orientation of a target line (6° eccentricity) among 284 distractor lines...
February 9, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28179146/prevalence-and-determinants-of-left-ventricular-geometric-abnormalities-in-hypertensive-patients-a-study-based-on-the-updated-classification-system-of-left-ventricular-geometry
#19
Tao Sha, Yu-Qing Huang, An-Ping Cai, Cheng Huang, Ying Zhang, Ji-Yan Chen, Ying-Ling Zhou, Xue-Ju Yu, Dan Zhou, Song-Tao Tang, Ying-Qing Feng, Ning Tan
AIM: The aim of this study was to determine whether different risk factors were associated with different type of left ventricular (LV) geometric abnormalities. METHODS: This retrospective analysis included 2290 hypertensive participants without other cardiovascular disease, valve disease and with ejection fraction≥50%. The type of LV geometric abnormality was defined on the basis of the new classification system. RESULTS: LV geometric abnormalities were detected in 1479 subjects (64...
February 4, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28178152/the-association-of-ideal-cardiovascular-health-and-left-ventricle-hypertrophy-in-rural-population-of-northeast-china-a-cross-sectional-observational-study
#20
Ye Chang, Yuan Li, Xiaofan Guo, Tan Li, Yintao Chen, Dongxue Dai, Yingxian Sun
In 2010, the American Heart Association (AHA) published a new concept "ideal cardiovascular health" (CVH), which consisted of 4 behaviors (smoking, body mass index [BMI], physical activity, and diet score) and 3 health factors (total cholesterol [TC], blood pressure [BP], and fasting plasma glucose [FPG]). This study was aimed to investigate the association between CVH with left ventricle hypertrophy (LVH) in a rural general population.From January 2012 to August 2013, we conducted this cross-sectional study using a multi-stage cluster sampling method...
February 2017: Medicine (Baltimore)
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