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https://www.readbyqxmd.com/read/28231557/comparison-of-body-s-center-of-mass-motion-relative-to-center-of-pressure-between-treadmill-and-over-ground-walking
#1
Hsuan-Lun Lu, Tung-Wu Lu, Hsiu-Chen Lin, Wing P Chan
Treadmills have been used in rehabilitation settings to provide convenient protocols and continuous monitoring of movement over multiple cycles at well-controlled speeds for gait and balance training. However, the potential differences in the movement control may affect the translation of the training outcomes to real life over-ground walking (OW). The similarities and differences in the balance control between treadmill walking (TW) and OW have largely been unexplored. The current study bridged the gap by comparing the motions of the body's center of mass (COM) relative to the center of pressure (COP) between TW and OW, in terms of the COM-COP inclination angle (IA) and its rate of change (RCIA)...
February 9, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28228373/statins-and-fibrates-for-diabetic-retinopathy-protocol-for-a-systematic-review
#2
Vania Mozetic, Carolina Gomes Freitas, Rachel Riera
BACKGROUND: Diabetic retinopathy (DR) is a common microvascular complication of diabetes mellitus, and more than 75% of patients who have had diabetes for more than 20 years will have some degree of DR. This disease is highly destructive to self-esteem and puts a high burden on public health and pension systems due to the effects that it has on people of working age. The current mainstay of treatment is laser photocoagulation, which causes impairment of vision and discomfort to patients...
February 22, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28228303/impact-of-very-high-pressure-stent-deployment-on-angiographic-and-long-term-clinical-outcomes-in-true-coronary-bifurcation-lesions-treated-by-the-mini-crush-stent-technique-a-single-center-experience
#3
Antoine Gerbay, Jeremy Terreaux, Alexis Cerisier, Marco Vola, Karl Isaaz
BACKGROUND: Percutaneous coronary intervention (PCI) for bifurcation lesions (BL) using 2 stents technique is known to be associated with high rates of procedural failure especially on the side branch (SB) mainly due to stent incomplete apposition. Stent deployment at very high pressure (SDHP) may lead to better stent expansion and apposition. However, SDHP may also be at the origin of deeper wall injury resulting into major cardiac adverse events. No data are available on evaluation of SDHP in BL treated by a mini-crush stent technique...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28228168/luminescence-spectroscopical-properties-of-plagioclase-particles-from-the-hayabusa-sample-return-mission-an-implication-for-study-of-space-weathering-processes-in-the-asteroid-itokawa
#4
Arnold Gucsik, Tomoki Nakamura, Cornelia Jäger, Kiyotaka Ninagawa, Hirotsugu Nishido, Masahiro Kayama, Akira Tsuchiyama, Ulrich Ott, Ákos Kereszturi
We report a systematic spectroscopical investigation of three plagioclase particles (RB-QD04-0022, RA-QD02-0025-01, and RA-QD02-0025-02) returned by the Hayabusa spacecraft from the asteroid Itokawa, by means of scanning electron microscopy, cathodoluminescence microscopy/spectroscopy, and micro-Raman spectroscopy. The cathodoluminescence properties are used to evaluate the crystallization effects and the degree of space weathering processes, especially the shock-wave history of Itokawa. They provide new insights regarding spectral changes of asteroidal bodies due to space weathering processes...
February 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28227746/can-an-anti-gravity-treadmill-improve-stability-of-children-with-cerebral-palsy
#5
P M Birgani, M Ashtiyani, A Rasooli, M Shahrokhnia, A Shahrokhi, M M Mirbagheri, P M Birgani, M Ashtiyani, A Rasooli, M Shahrokhnia, A Shahrokhi, M M Mirbagheri, A Shahrokhi, M Shahrokhnia, A Rasooli, M M Mirbagheri, P M Birgani, M Ashtiyani
We aimed to study the effects of an anti-gravity treadmill (AlterG) training on balance and postural stability in children with cerebral palsy (CP). AlterG training was performed 3 days/week for 8 weeks, with up to 45 minutes of training per session. The subject was evaluated before and after the 8-week training. The effects of training on the balance and postural stability was evaluated based on the Romberg test that was performed by using a posturography device. The parameters quantifying Center-of-Pressure (CoP) were calculated using different analytical approaches including power spectral density and principal components analyses...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227631/testing-the-assumption-of-normality-in-body-sway-area-calculations-during-unipedal-stance-tests-with-an-inertial-sensor
#6
Kyoung Jae Kim, Jennifer Lucarevic, Christopher Bennett, Ignacio Gaunaurd, Robert Gailey, Vibhor Agrawal, Kyoung Jae Kim, Jennifer Lucarevic, Christopher Bennett, Ignacio Gaunaurd, Robert Gailey, Vibhor Agrawal, Christopher Bennett, Vibhor Agrawal, Jennifer Lucarevic, Kyoung Jae Kim, Ignacio Gaunaurd, Robert Gailey
The quantification of postural sway during the unipedal stance test is one of the essentials of posturography. A shift of center of pressure (CoP) is an indirect measure of postural sway and also a measure of a person's ability to maintain balance. A widely used method in laboratory settings to calculate the sway of body center of mass (CoM) is through an ellipse that encloses 95% of CoP trajectory. The 95% ellipse can be computed under the assumption that the spatial distribution of the CoP points recorded from force platforms is normal...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227530/linear-discriminant-analysis-for-symmetric-lifting-recognition-of-skilled-logistic-experts-by-center-of-pressure-trajectory
#7
Hieyong Jeong, Michiko Kido, Yuko Ohno, Hieyong Jeong, Michiko Kido, Yuko Ohno, Michiko Kido, Hieyong Jeong, Yuko Ohno
GOAL: The main purpose of the present study was to propose a recognizing method to analyze characteristics of symmetric lifting of skilled logistic experts by center of pressure (CoP) trajectories. Although it has been known that good posture helps reduce the intradiscal loads on lumbar discs, the most significant problem was that most of logistic workers did not know whether the current posture was proper or not. METHODS: The experiment of lifting was performed three times under 18 kg loads with closed eyes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227334/human-static-postures-analysis-using-empirical-mode-decomposition
#8
Khaled Safi, Emilie Hutin, Samer Mohammed, Inke Marie Albertsen, Eric Delechelle, Yacine Amirat, Mohamad Khalil, Jean-Michel Gracies, Khaled Safi, Emilie Hutin, Samer Mohammed, Inke Marie Albertsen, Eric Delechelle, Yacine Amirat, Mohamad Khalil, Jean-Michel Gracies, Eric Delechelle, Mohamad Khalil, Inke Marie Albertsen, Jean-Michel Gracies, Emilie Hutin, Khaled Safi, Yacine Amirat, Samer Mohammed
The goal of this paper is to analyze the human stability during static postures using stabilometric signals. The effects of subject's visual input, feet position, age and gender are analyzed. Twenty eight healthy subjects have participated in this study. The center of pressure displacements were measured along the Medio-Lateral (ML) and Antero-Posterior (AP) directions. Empirical mode decomposition method is used to decompose the stabilometric signal into several elementary signals called Intrinsic Mode Functions (IMF)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227173/attractor-shape-descriptors-for-balance-impairment-assessment-in-parkinson-s-disease
#9
Anirudh Som, Narayanan Krishnamurthi, Vinay Venkataraman, Pavan Turaga, Anirudh Som, Narayanan Krishnamurthi, Vinay Venkataraman, Pavan Turaga, Narayanan Krishnamurthi, Anirudh Som, Pavan Turaga
In this paper, we propose a computational framework using high-dimensional shape descriptors of reconstructed attractors of center-of-pressure (CoP) tracings collected from subjects with Parkinson's disease while performing dynamical posture shifts, to quantitatively assess balance impairment. Using a dataset collected from 60 subjects, we demonstrated that the proposed method outperforms traditional methods, such as dynamical shift indices and use of chaotic invariants, in assessment of balance impairment.
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226984/analysis-of-causal-cardio-postural-interaction-under-orthostatic-stress-using-convergent-cross-mapping
#10
Ajay K Verma, Amanmeet Garg, Andrew Blaber, Reza Fazel-Rezai, Kouhyar Tavakolian, Ajay K Verma, Amanmeet Garg, Andrew Blaber, Reza Fazel-Rezai, Kouhyar Tavakolian, Ajay K Verma, Amanmeet Garg, Kouhyar Tavakolian, Reza Fazel-Rezai, Andrew Blaber
Knowledge of a cause-and-effect relationship between different physiological systems is helpful in predicting their performance under perturbations, such as orthostatic challenge. The causal coupling between representative signals of the cardiovascular and postural systems under orthostatic challenge remains unknown. Understanding the causal relationship between these two systems is critical, as their interplay is vital to maintain stable upright posture of the human body during quiet standing. In this research, convergent cross mapping (CCM) method was applied to study the causal relationship between the cardiovascular and postural systems previously shown to have coherent activity during quiet standing...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226430/postural-flexibility-during-quiet-standing-in-healthy-elderly-and-patients-with-parkinson-s-disease
#11
Kazuyuki Matsuda, Yasuyuki Suzuki, Naoya Yoshikawa, Tomohisa Yamamoto, Ken Kiyono, Takao Tanahashi, Takuyuki Endo, Kei Fukada, Kunihiko Nomura, Saburo Sakoda, Taishin Nomura, Kazuyuki Matsuda, Yasuyuki Suzuki, Naoya Yoshikawa, Tomohisa Yamamoto, Ken Kiyono, Takao Tanahashi, Takuyuki Endo, Kei Fukada, Kunihiko Nomura, Saburo Sakoda, Taishin Nomura, Kei Fukada, Naoya Yoshikawa, Tomohisa Yamamoto, Takuyuki Endo, Kunihiko Nomura, Taishin Nomura, Kazuyuki Matsuda, Ken Kiyono, Takao Tanahashi, Saburo Sakoda, Yasuyuki Suzuki
Postural instability is one of the predominant symptoms of Parkinson's disease (PD). Despite its significant impact on the deterioration in quality of life in PD patients, mechanistic causes of the instability have not been clarified. Joint inflexibility at ankle and hip joints might be such a major cause, leading to small variability in the center of pressure (CoP) during quiet stance. However, this conjecture is still controversial. Thus, quantitative characterization of CoP patterns during quiet stance in PD patients remains a matter of research...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225492/clinical-application-of-ticl-implantation-for-ametropia-following-deep-anterior-lamellar-keratoplasty-for-keratoconus-a-consort-compliant-article
#12
Qin Qin, Liping Yang, Zifang He, Zhenping Huang
BACKGROUND: This study aimed to investigate the clinical application of phakic toric intraocular collamer lens (TICL) implantation in treating ametropia following deep anterior lamellar keratoplasty (DALK) for patients with keratoconus, especially the effectiveness and safety of high astigmatism and indications of TICL implantation after corneal transplantation. METHODS: Using the self-controlled case series observation approach, 9 patients with ametropia (9 eyes) who underwent DALK surgery for keratoconus 1...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28225483/homocysteine-and-all-cause-mortality-in-hypertensive-adults-without-pre-existing-cardiovascular-conditions-effect-modification-by-mthfr-c677t-polymorphism
#13
Benjamin Xu, Xiangyi Kong, Richard Xu, Yun Song, Lishun Liu, Ziyi Zhou, Rui Gu, Xiuli Shi, Min Zhao, Xiao Huang, Mingli He, Jia Fu, Yefeng Cai, Ping Li, Xiaoshu Cheng, Changyan Wu, Fang Chen, Yan Zhang, Genfu Tang, Xianhui Qin, Binyan Wang, Hao Xue, Yundai Chen, Ye Tian, Ningling Sun, Yimin Cui, Fan Fan Hou, Jianping Li, Yong Huo
BACKGROUND: Previous studies support an association between elevated total homocysteine (tHcy) levels and increased all-cause mortality. However, few prospective studies have examined this association in hypertensive patients, and/or tested any effect modification by the methylene tetrahydrofolate reductase (MTHFR) C677T genotype. METHODS: This was a post hoc analysis of the China Stroke Primary Prevention Trial. Serum tHcy and folate were measured at baseline. Individual MTHFR C677T genotype (CC, CT, and TT) was determined...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28224928/impact-of-right-ventricular-function-on-outcome-of-severe-aortic-stenosis-patients-undergoing-transcatheter-aortic-valve-replacement
#14
Edward Koifman, Romain Didier, Nirav Patel, Zack Jerusalem, Sarkis Kiramijyan, Itsik Ben-Dor, Smita I Negi, Zuyue Wang, Steven A Goldstein, Michael J Lipinski, Rebecca Torguson, Jiaxiang Gai, Augusto D Pichard, Lowell F Satler, Ron Waksman, Federico M Asch
BACKGROUND: Right ventricular (RV) dysfunction was shown to be associated with adverse outcomes in a variety of cardiac patients and is considered a risk factor for adverse outcome according to the updated Valve Academic Research Consortium criteria. OBJECTIVE: Our goal was to assess the impact of RV function at baseline on 1-year mortality among patients with severe aortic stenosis (AS) undergoing transcatheter aortic valve replacement (TAVR). METHODS: All patients with severe AS treated with TAVR from May 2007 to March 2015 at our center were included in the present study, and baseline and procedural characteristics were recorded for each patient...
February 2017: American Heart Journal
https://www.readbyqxmd.com/read/28223786/factors-involved-in-the-discontinuation-of-oral-intake-in-elderly-patients-with-recurrent-aspiration-pneumonia-a-multicenter-study
#15
Tsuneaki Kenzaka, Taro Takeshima, Koki Kosami, Ayako Kumabe, Yuki Ueda, Takeshi Takahashi, Yuya Yamamoto, Yurika Hayashi, Akihito Kitao, Masanobu Okayama
PURPOSE: To assess the factors involved in oral intake discontinuation in elderly patients with recurrent aspiration pneumonia. PATIENTS AND METHODS: This study included patients with pneumonia who were treated at Jichi Medical University Hospital between 2007 and 2013, at Toyooka Public Hospital between 2011 and 2013 and at Yuzawa Community Medical Center between 2010 and 2012. We consecutively enrolled patients with aspiration pneumonia. The primary study point was oral intake discontinuation after the initiation of oral intake during hospitalization in cases of recurrent aspiration...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28223290/nephrologists-perspectives-on-defining-and-applying-patient-centered-outcomes-in-hemodialysis
#16
Allison Tong, Wolfgang C Winkelmayer, David C Wheeler, Wim van Biesen, Peter Tugwell, Braden Manns, Brenda Hemmelgarn, Tess Harris, Sally Crowe, Angela Ju, Emma O'Lone, Nicole Evangelidis, Jonathan C Craig
BACKGROUND AND OBJECTIVES: Patient centeredness is widely advocated as a cornerstone of health care, but it is yet to be fully realized, including in nephrology. Our study aims to describe nephrologists' perspectives on defining and implementing patient-centered outcomes in hemodialysis. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Face-to-face, semistructured interviews were conducted with 58 nephrologists from 27 dialysis units across nine countries, including the United States, the United Kingdom, Australia, Austria, Belgium, Canada, Germany, Singapore, and New Zealand...
February 21, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/28223101/non-invasive-evaluation-of-portal-hypertension-using-ultrasound-elastography
#17
REVIEW
Annalisa Berzigotti
Portal hypertension (PH) leads to serious complications such as bleeding from gastro-esophageal varices, ascites and porto-systemic encephalopathy in patients with chronic liver disease (CLD). Since the gold-standard methods for assessing PH and its complications (measurement of hepatic venous pressure gradient, HVPG; endoscopy), are invasive expensive and not available at all centers, non-invasive methods have been increasingly investigated in the last 20 years. The present review focuses on the role of ultrasound elastography, a novel group of non-invasive techniques able to measure stiffness in target organs, to identify the presence, severity and risk of complications of PH...
February 13, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28222783/walking-in-fully-immersive-virtual-environments-an-evaluation-of-potential-adverse-effects-in-older-adults-and-individuals-with-parkinson-s-disease
#18
Aram Kim, Nora Darakjian, James M Finley
BACKGROUND: Virtual reality (VR) has recently been explored as a tool for neurorehabilitation to enable individuals with Parkinson's disease (PD) to practice challenging skills in a safe environment. Current technological advances have enabled the use of affordable, fully immersive head-mounted displays (HMDs) for potential therapeutic applications. However, while previous studies have used HMDs in individuals with PD, these were only used for short bouts of walking. Clinical applications of VR for gait training would likely involve an extended exposure to the virtual environment, which has the potential to cause individuals with PD to experience simulator-related adverse effects due to their age or pathology...
February 21, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28222781/the-complex-interplay-between-clinical-and-person-centered-diabetes-outcomes-in-the-two-genders
#19
Maria Chiara Rossi, Giuseppe Lucisano, Basilio Pintaudi, Angela Bulotta, Sandro Gentile, Marco Scardapane, Soren Eik Skovlund, Giacomo Vespasiani, Antonio Nicolucci
BACKGROUND: New approaches to cope with clinical and psychosocial aspects of type 2 diabetes (T2DM) are needed; gender influences the complex interplay between clinical and non-clinical factors. We used data from the BENCH-D study to assess gender-differences in terms of clinical and person-centered measures in T2DM. METHODS: Clinical quality of care indicators relative to control of HbA1c, lipid profile, blood pressure, and BMI were derived from electronic medical records...
February 21, 2017: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/28222754/exploring-stakeholders-perceptions-of-a-task-shifting-strategy-for-hypertension-control-in-ghana-a-qualitative-study
#20
Juliet Iwelunmor, Joyce Gyamfi, Jacob Plange-Rhule, Sarah Blackstone, Nana Kofi Quakyi, Michael Ntim, Ferdinand Zizi, Kwasi Yeboah-Awudzi, Alexis Nang-Belfubah, Gbenga Ogedegbe
BACKGROUND: The purpose of this study was to explore stakeholders' perception of an on-going evidence-based task-shifting strategy for hypertension (TASSH) in 32 community health centers and district hospitals in Ghana. METHODS: Using focus group discussions and in-depth interviews, qualitative data were obtained from 81 key stakeholders including patients, nurses, and site directors of participating community health centers involved in the TASSH trial. Qualitative data were analyzed using open and axial coding techniques...
February 21, 2017: BMC Public Health
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