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Noise-enhanced dynamic single leg balance in subjects with functional ankle instability

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Journal of Sport and Health Science 2012年第2期1卷 102-106页

作者： Scott ross Brent Arnold virginia Commonwealth University

Background:Stochastic resonance stimulation(SRS) transmits subsensory electrical Gaussian white noise into the body to enhance sensorimotor *** therapy has improved static single leg balance in subjects with functional ankle ***,the effect of this stimulation on dynamic single leg balance is not *** in dynamic single leg balance with SRS may have implications For enhancing functional rehabilitation for ankle ***,the purpose of this study was to determine the effects of SRS on dynamic single leg balance in subjects with functional ankle instability. Methods:This study was an experimental research design and data were collected in a sports medicine research *** subjects with functional ankle instability(69±15 kg;173±10 cm;21±2 years) reported a history of ankle sprains and instability at the ankle with physical activity.A single leg jump-landing test was used to assess dynamic *** were required to jump between 50% and 55% of the maximal vertical jump height,land on a single leg atop a force plate,and stabilize as quickly as ***-landing tests were performed with and without *** trials were performed for each treatment condition(SRS and control).A randomized block design was used to determine test ***/posterior and medial/lateral time-to-stabilization were computed to assess dynamic *** time indicated better ***-tailed paired samples t tests were used for analysis(α≤0.05). Results:SRS improved anterior/posterior time-to-stabilization(stochastic resonance = 1.32±0.31 s,control = 1.74±0.80 s,p = 0.03),but did not enhance medial/lateral time-to-stabilization(stochastic resonance = 1.95±0.40 s,control = 1.92±0.48 s,p = 0.07). Conclusion:Clinicians might use SRS to facilitate balance improvements with sagittal plane dynamic single leg balance exercises that patients may not be able to perform otherwise.

关键词： Chronic Posture Sprain Stochastic resonance

Formal methods, statistical debugging and exploratory analysis in support of system development: Towards a verification and validation calculator tool

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International Journal of Modeling, Simulation, and Scientific Computing 2016年第1期7卷 120-141页

作者： Saikou Y.Diallo ross Gore Christopher J.Lynch Jose J.Padilla virginia Modeling Analysis and Simulation Center Old Dominion University 1030 University Blvd.SuffolkVA 23435USA

In this paper,we propose an approach to formally verify and rigorously validate a simulation system against the specification of the real *** implement the approach in a verification and validation calculator tool that takes as input a set of statements that capture the requirements,internal conditions of the system and expected outputs of the real system and produces as output whether the simulation satisfies the requirements,faithfully represents the internal conditions of the system and produces the expected *** provide a use case to show how subject matter experts can apply the tool.

关键词： Verification and validation formal methods modeling and simulation

One year experience with computer-assisted propofol sedation for colonoscopy

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World Journal of Gastroenterology 2017年第16期23卷 2964-2971页

作者： Otto S Lin Danielle La Selva Richard A Kozarek Deborah Tombs Wade Weigel Ryan Beecher Johannes Koch Susan Mc Cormick Michael Chiorean Fred Drennan Michael Gluck Nanda Venu Michael Larsen Andrew ross Digestive Disease Institute Virginia Mason Medical CenterSeattleWA 98101United States Department of Anesthesia Virginia Mason Medical CenterSeattleWA 98101United States

AIM To report our one-year experience with computer assisted propofol sedation(CAPS) for colonoscopy as the first United States Medical Center to adopt CAPS technology for routine clinical *** Between September 2014 and August 2015, 2677 patients underwent elective outpatient colonoscopy with CAPS at our center. All colonoscopies were performed by 1 of 17 gastroenterologists certified in the use of the CAPS system, with the assistance of a specially trained nurse. Procedural success rates, polyp detection rates, procedure times and recovery times were recorded and compared against corresponding historical measuresfrom 2286 colonoscopies done with midazolam and fentanyl from September 2013 to August 2014. Adverse events in the CAPS group were *** The mean age of the CAPS cohort was 59.9 years(48.7% male); 31.3% were ASA?Ⅰ, 67.3% ASA Ⅱ and 1.4% ASA Ⅲ. 45.1% of the colonoscopies were for screening, 31.5% for surveillance, and 23.4% for symptoms. The mean propofol dose administered was 250.7 mg(range 16-1470 mg), with a mean fentanyl dose of 34.1 mcg(0-100 mcg). The colonoscopy completion and polyp detection rates were similar to that of historical measures. Recovery times were markedly shorter(31 min vs 45.6 min, P < 0.001). In CAPS patients, there were 20(0.7%) cases of mild desaturation(< 90%) treated with a chin lift and reduction or temporary discontinuation of the propofol infusion, 21(0.8%) cases of asymptomatic hypotension(< 90 systolic blood pressure) treated with a reduction in the propofol rate, 4(0.1%) cases of marked agitation or discomfort due to undersedation, and 2 cases of pronounced transient desaturation requiring brief(< 1 min) mask ventilation. There were no sedation-related serious adverse events such as emergent intubation, unanticipated hospitalization or permanent injury. CONCLUSION CAPS appears to be a safe, effective and efficient means of providing moderate sedation for colonoscopy in relatively healthy patients. Recovery

关键词： Colonoscopy Propofol Sedation Colon cancer screening Anesthesia

男男性接触者的危险性行为:一项通过互联网的调查

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中国艾滋病性病 2004年第5期10卷 335-337页

作者：王全意 GE Lin Michael W ross 北京市疾病预防控制中心北京100013 Regional Research Institute West Virginia UniversityUSA School of Public Health University of TexasUSA

目的　探讨中国大陆使用互联网的男男性接触者 (MSM)的危险性行为。方法　根据知情同意的原则 ,于 2 0 0 1年 8～ 11月在 7个中国同性恋网站招募 35 3名MSM。使用含 85个问题的自填式问卷 ,对他们互联网的使用情况 ,艾滋病知识、态度和... 详细信息

目的　探讨中国大陆使用互联网的男男性接触者 (MSM)的危险性行为。方法　根据知情同意的原则 ,于 2 0 0 1年 8～ 11月在 7个中国同性恋网站招募 35 3名MSM。使用含 85个问题的自填式问卷 ,对他们互联网的使用情况 ,艾滋病知识、态度和危险性行为等进行调查。结果　接近 70 %的被调查者与通过互联网认识的MSM发生过性行为。约三分之二被调查者曾有过未加保护的肛交 ,很少被调查者在口交中使用安全套。结论　危险性行为在中国MSM中较普遍 ,可以通过互联网开展经济有效的艾滋病干预。

关键词：男男性接触者互联网艾滋病

How the Batsotso Mouming Rituals Keep the Bereaved Disturbed in Kakamega County, Kenya

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Psychology Research 2015年第6期5卷 387-392页

作者： Asatsa Stephen virginia W. Nyagah Pamela N. Kaithuru Catholic University of Eastern Africa Nairobi Kenya

Evaluation of gastrointestinal bleeding: Update of current radiologic strategies

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World Journal of Gastrointestinal Pharmacology and Therapeutics 2014年第4期5卷 200-208页

作者： Parth J Parekh ross C Buerlein Rouzbeh Shams Harlan Vingan David A Johnson Department of Internal Medicine Eastern Virginia Medical School Department of Internal Medicine University of Virginia Department of Radiology Eastern Virginia Medical School Department of Internal Medicine Division of Gastroenterology and Hepatology Eastern Virginia Medical School

Gastrointestinal bleeding(GIB) is a common presenta-tion with significant associated morbidity and mortality, the prevalence of which continues to rise with the ever-increasing aging population. Initial evaluation includes an esophagoduodeonscopy and/or colonoscopy, which may fail to reveal a source. Such cases prove to be a dilemma and require collaboration between gastroen-terology and radiology in deciding the most appropriate approach. Recently, there have been a number of ra-diologic advances in the approach to GIB. The purpose of this review is to provide an evidence-based update on the most current radiologic modalities available and an algorithmic approach to GIB.

关键词： Gastrointestinal bleeding Angiography Scintigraphy Enterography Enteroscopy Embolization

体质较好的老年男性步行与痴呆发病状况的研究

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世界核心医学期刊文摘（神经病学分册） 2005年第2期1卷 4-4页

作者： Abbott R.D. White L.R. ross G.W. 黄卫东 University of virginia Health System Dept. of Health Evaluat ion Sciences PO Box 800717 Charlottesville VA 22908-0717 United States Dr.

Context: Evidence suggests that physical activity may be related to the clinic al expression of dementia. Whether the association includes low intensity activ ity such as walking is not known. Objective: To examine the association between walking and future risk of dementia in older men. Design: Prospective cohort stu dy. Setting and Participants: Distance walked per day was assessed from 1991 to 1993 in 2257 physically capable men aged 71 to 93 years in the Honolulu Asia Ag ing Study. Fol low up for incident dementia was based on neurological assessme nt at 2 repeat examinations (1994-1996 and 1997-1999). Main Outcome Measures: Overall dementia, Alzheimer disease, and vascular dementia. Results: During the course of follow up, 158 cases of dementia were identified (15.6/1000 person y ears). After adjusting for age, men who walked the least ( 2 mile/d), an excess risk of dementia was alsoobserved in those who walked 0.25 to 1 mile/d (17.6 vs 10.3/1000 person years; RH, 1.71; 95%CI, 1.02-2.86). These associations persisted after accounting for other factors, including the possib ility that limited amounts of walking could be the result of a decline in physic al function due to preclinical dementia. Conclusions: Findings suggest that walk ing is associated with a reduced risk of dementia. Promoting active lifestyles i n physically capable men could help late life cognitive function.

关键词：发病状况发病风险步行距离血管性痴呆认知功能随访过程神经病学相对风险大样本研究临床前