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The effects of total ankle replacement on ankle joint mechanics during walking

Journal of Sport and Health Science 2017年第3期6卷 340-345页

作者： henry wang Scott R.Brown Biomechanics Laboratory School of KinesiologyBall State University Sports Performance Research Institute New Zealand(SPRINZ) Auckland University of Technology

Background:End-stage ankle arthritis impairs joint function and patients' *** ankle replacement is a surgical procedure to treat severe ankle *** Talaris Anatomic Ankle^(TM)(STAA) was designed to mimic the normal ankle anatomy and flexion/extension of the ankle *** purpose of this study was to examine the effect of an STAA ankle replacement on ankle joint function and mechanics during ***:Five patients with end-stage unilateral ankle arthritis were *** performed level walking in a laboratory setting on 2occasions,prior to and 3 months after the STAA ankle *** Orthopedic Foot and Ankle Society(AOFAS) hindfoot score was obtained.A 12-camera motion capture system was used to perform walking *** temporo-spatial parameters and ankle joint mechanics were *** Student's t tests and non-parametric Wilcoxon matched tests were performed to examine the differences in biomechanical variables between the pre-and post-surgery walking ***:Compared to the pre-surgical condition,at 3 months of post-STAA surgery,patients experienced greater improvement in AOFAS hindfoot score(p = 0.0001);the STAA ankle demonstrated a 31% increase in ankle joint excursion(p = 0.045),a 22% increase in ankle plantarflexor moment(p = 0.075),a 60% increase in ankle power absorption(p = 0.023),and a 68% increase in ankle power production(p = 0.039).Patients also demonstrated a 26% increase in walking speed(p = 0.005),a 20% increase in stride length(p = 0.013),a 15% decrease in double support time(p = 0.043),and a 5% decrease in total stance time(p = 0.055).Conclusion:Three months after surgeries,the STAA patients experienced improvements in ankle function and gait *** STAA ankle demonstrated improved ankle mechanics during daily activities such as walking.

关键词： Ankle mechanics AOFAS score Arthritis Gait analysis Total ankle replacement Walking

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Influences of load carriage and physical activity history on tibia bone strain

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Journal of Sport and Health Science 2019年第5期8卷 478-485页

作者： henry wang Mohammad Kia D.Clark Dickin Biomechanics Laboratory School of KinesiologyBall State UniversityMuncieIN 47306USA Department of Biomechanics Hospital for Special SurgeryNew YorkNY 10021USA

Background:Military recruits are often afflicted with stress *** military’s strenuous training programs involving load carriage may contribute to the high incidence of tibia stress fractures in the *** purpose of this study was to assess the influences of incremented load carriage and history of physical activity on tibia bone strain and strain rate during ***:Twenty recreational basketball players and 20 recreational runners performed 4 walking tasks while carrying 0 kg,15 kg,25 kg,and35 kg loads,*** bone strain and strain rate were obtained through subject-specific multibody dynamic simulations and finite element *** model repeated-measures analyses of variance were ***:The mean±SE of the runners’ bone strain(μs)during load carriages(0 kg,15 kg,25 kg,and 35 kg)were 658.11±1.61,804.41±1.96,924.49±2.23,and 1011.15±2.71,respectively,in compression and 458.33±1.45,562.11±1.81,669.82±2.05,and 733.40±2.52,respectively,in *** the basketball players,the incremented load carriages resulted in compressive strain of 634.30±1.56,746.87±1.90,842.18±2.16,and 958.24±2.63,respectively,and tensile strain of 440.04±1.41,518.86±1.75,597.63±1.99,and 700.15±2.47,respectively.A dose-response relationship exists between incremented load carriage and bone strain and strain rate.A history of regular basketball activity could result in reduced bone strain and reduced strain ***:Load carriage is a risk factor for tibia stress fracture during basic *** exercise programs,such as basketball,that involved multidirectional mechanical loading to the tibia bones can be implemented for military recruits before basic training commences.

关键词： Modeling Multi-body dynamics Strain Strain rate Stress fracture Walking

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Low back pain and golf:A review of biomechanical risk factors

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Sports Medicine and Health Science 2020年第1期2卷 10-18页

作者： Nathan Edwards Clark Dickin henry wang School of Kinesiology Ball State UniversityMuncieUnited States

Golf is an international sport played by a variety of age groups and fitness levels,and although golf has a low to moderate aerobic intensity level,injuries are common among professional and amateur *** amounts of force experienced during the golf swing can lead to injury when golfers lack appropriate strength or technique with the lower back most commonly *** has indicated that trunk muscle activation,hip strength and mobility,and pelvis and trunk rotation are associated with low back pain(LBP).Based on anecdotal evidence,golf practitioners specifically address issues in weight shift,lumbar positioning,and pelvis sequencing for golfers with *** review aims to elucidate the effects of proper and improper golf swing technique on LBP and to help golf practitioners understand how to approach the alleviation of LBP in their clientele.

关键词： Low back pain Golf Injury Biomechanics Risk factors

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Applications of an IS-MP Model with Yield Curve

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Frontiers of Economics in China-Selected Publications from Chinese Universities 2016年第1期11卷 142-155页

作者： henry wang Bill Z. Yang Department of Economics University of Missouri-Columbia Columbia MO 65211 USA Department of Finance and Economics Georgia Southern University Statesboro GA 30460USA

This paper interest rates （i.e., the recent macroeconomic presents an IS-MP model with the term structure of yield curve） and discusses some of its applications to activities and policy issues. Specifically, the model is employed to explain （1） why a steepening yield curve may signal the subsequent economic expansion, （2） why long-term zero interest rate policy （ZIRP） may not completely avoid recessions, but disables the yield curve from being inverted to signal the following economic recession, （3） how Operation Twist （OT） may help ease the recession, in particular, under ZIRP, and what limit it may face.

关键词： IS-MP model yield curve zero interest rate policy (ZIRP),Operation Twist (OT)

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Energy expenditure and muscular activation patterns through active sitting on compliant surfaces

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Journal of Sport and Health Science 2017年第2期6卷 207-212页

作者： D.Clark Dickin Rachel K.Surowiec henry wang Biomechanics Laboratory Ball State UniversityMuncieIN 47306USA

Purpose: To test the effectiveness of sitting surfaces with varied amounts of stability on muscle activity and energy ***: Using a within-participants repeated measures design, 11 healthy young-adult females(age = 20.0 ± 1.8 years) were measured using indirect calorimetry to assess energy expenditure, and electromyography to assess muscular activation in trunk and leg musculature under 3different sitting surfaces: flat-firm surface, air-filled cushion, and a stability ball. Data were analyzed using repeated measures analysis of variance with follow-up pairwise contrasts used to determine the specific effects of sitting surface on muscle activation and energy ***: Significantly greater energy expenditure was recorded for the stability ball(p = 0.01) and the cushion(p = 0.03) over the flat surface(10.4% and 9.6% greater, respectively), with no differences between the ball and the cushion. Both the ball and the cushion produced higher tibialis anterior activation over the flat surface(1.09 and 0.63 root-mean-square millivolts(RMSmv), respectively), while the stability ball produced higher soleus activity over both cushion and flat surfaces(3.97 and 4.24 RMSmv, respectively). Additionally, the cushion elicited higher adductor longus activity over the ball and flat surfaces(1.76 and 1.81 RMSmv, respectively), but no trunk musculature differences were ***: Compliant surfaces resulted in higher levels of muscular activation in the lower extremities facilitating increased caloric *** the increasing trends in sedentary careers and the increases in obesity, this is an important finding to validate the merits of active sitting facilitating increased caloric expenditure and muscle activation.

关键词： Energy metabolism Electromyography Female Posture Sedentary lifestyle Workplace

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What constitutes failure of medical therapy in the changing landscape of Crohn's disease?

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Laparoscopic, Endoscopic and Robotic Surgery 2022年第4期5卷 158-160页

作者： Nguyen Huynh henry wang Kar Yin Fok James Wei Tatt Toh Division of Colorectal Surgery Department of SurgeryWestmead HospitalSydneyNew South WalesAustralia Westmead Clinical School The University of SydneySydneyNew South WalesAustralia

The management of Crohn's disease has evolved rapidly in the era of immunomodulators and *** this,a significant proportion of patients with Crohn's disease ultimately require surgical *** of the indications for operative management includes failure of medical *** report two cases of patients with complicated Crohn's disease who have exhausted medical therapy and failed medical *** both cases,the patients developed large complex intra-abdominal phlegmons and intractable symptoms of intermittent pain,partial obstruction and/or infectious complications requiring operative ***'s disease can present with a wide spectrum of *** the complexity of management in Crohn's disease,it is important for both physicians and surgeons to be aware of what constitutes failure of medical therapy and when it may be important to consider surgical involvement.

关键词： Crohn's disease Phlegmon Laparoscopic surgery Failure of medical therapy Ileocecal resection

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Effects of a soccer-specific vertical jump on lower extremity landing kinematics

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Sports Medicine and Health Science 2022年第3期4卷 209-214页

作者： Sophia Mancini DClark Dickin Dorice Hankemeier Caroline Ashton Jordan Welch henry wang Biomechanics Laboratory Ball State University47306USA School of Kinesiology Ball State University2000 W University AvenueMuncieIN47306USA

Anterior cruciate ligament(ACL)injury frequently occurs in female soccer athletes during deceleration movements such as *** soccer,landings mostly occur following jumping *** research has been done to determine the mechanics that follow and how they compare to standard drop vertical jumps(DVJ).The purpose of this study was to analyze differences in kinematics between the DVJ and the soccer-specific vertical jump(SSVJ)in female soccer athletes to better assess the sport-specific risk for ACL injury.A secondary aim was to compare second landings(L2)to first landings(L1).Eight female recreational soccer athletes performed DVJs and SSVJs initiated from a 31 cm *** capture was performed during landings and data were analyzed using repeated-measures *** produced less peak hip flexion(p=0.03)and less peak knee flexion(p=0.002)than *** also demonstrated increased ankle plantarflexion at initial contact(IC)than DVJs(p=0.005).L2s produced less peak hip(p=0.007)and knee flexion(p=0.002)than *** and L2s displayed a more erect landing posture than the DVJs and L1s at the hip and knee,a known ACL risk *** significant results between jump styles show that the SSVJ displays mechanics that are different from the *** SSVJ may be a better sport-specific screening tool for ACL injury mechanisms than the DVJ in soccer athletes as it has a more direct translation to the sport.

关键词： ACL Female soccer athletes Jump landing Kinematics Injury mechanisms

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The Challenges and Core Competencies for China-based Localization Companies

The Challenges and Core Competencies for China-based Localiz...

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2010年中国翻译职业交流大会

作者： henry wang GlocalExpert International

Agenda INTRODUCTION LOCALIZATION OUTSOURCING TRENDS ISSUES WITH THE PAST & PRESENT CHINA’S IMAGE IN OUTSOURCING QUESTIONS, COMMENTS, THOUGHTS

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A Close-Up Look at New Trends

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Beijing Review 2022年第31期65卷 26-28页

作者： henry Huiyao wang Mabel Lu Miao the Center for China and Globalization the think tank

In the decade before the COVID-19 pandemic ravaged the world, delegations from the Center for China and Globalization(CCG) had visited counterparts across the Pacific in the U.S. at least twice a year. However, the un... 详细信息

关键词： delegation before exchanges

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Transanal minimally invasive surgery to rescue anastomosis following leak after low anterior resection: A case report

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Laparoscopic, Endoscopic and Robotic Surgery 2021年第4期4卷 121-124页

作者： James Wei Tatt Toh henry wang Geoffrey Collins Chelsea Beinke Elissa Zhang Alistair Escott Toufic El-Khoury Nimalan Pathma-Nathan Discipline of Surgery Sydney Medical SchoolThe University of SydneySydneyAustralia Colorectal Department Westmead HospitalSydneyAustralia The University of Notre Dame SydneyAustralia

Restorative low anterior resection(LAR)for rectal cancer carries a significant risk of anastomotic leak:One of the most feared complications in colorectal *** management may include takedown of the anastomosis and end colostomy which,in some cases,is *** contemporary operative measures include over the scope clips and ***,there have been case reports and a Society of American Endoscopic and Gastrointestinal Surgeons video on the novel use of transanal minimally invasive surgery(TAMIS)in the management of anastomotic *** present a 59-year-old female who underwent LAR after declining radiotherapy for a bulky 9 cm rectal tumour 9-10 cm from the anal *** clinical deterioration,computed tomography demonstrated an anastomotic leak communicating with a 5-cm pelvic collection containing *** laparoscopy,pus and faeculent material were washed from the pelvic cavity and drains were ***-operative endoscopy demonstrated a 7-8 mm dehiscence at the *** defect(approximately 7 cm from the anal verge)was successfully closed using TAMIS and a running V-lock *** patient recovered well and was discharged home on post-operative day *** this case,a low colorectal anastomotic leak was successfully rescued with *** novel technique may be useful in the armamentarium of colorectal surgeons experienced in TAMIS.

关键词： Transanal minimally invasive surgery Anastomotic leak Low anterior resection Colorectal cancer

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