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9篇 您的检索式:作者名="S.Lloyd"
    题名 作者 年代 出处 被引量
1NMR Based Quantum Information Processing: Achievements and Prospects显示文摘D.G.Cory R.Laflamme E.Knill L.Viola T.F.Havel N.Boulant G.Boutis E.Fortunato S.Lloyd R.Martinez C.Negrevergne M.Pravia Y.Sharf G.Teklemariam Y.S.Weinstein W.H.Zurek 2000Fortschr. Phys. . 2000 (9‐1)2000,,9:1
2The Rhetoric of Performance in India: The Confluence of Nyaya Vada(logic) and Sadharanikaran(performance) in Past and Present Discourses显示文摘Though 'Comparative' rhetoricians Oliver and Kennedy placed Indian rhetoric on the rhetorical map, much remains undiscovered concerning their specific indigenous communicative practices. This essay introduces two such Indian traditions-- Nyāya, a philosophically based approach to persuasion codified by Hindus, and Sadharanikaran, interpreted by many as a Hindu model of communication. Nyāya, gradually developed a five-part 'method'(Matilal) that defines arguments in terms of claims, reasons, and analogies. In a parallel dramatic tradition from Bharat Muni called Sadharanikaran, the receiver 'not only accepts the message willingly but in the process derives genuine satisfaction and pleasure or Ananda'. This essay contrasts the two approaches with Aristotle's more familiar ideas, and then offers some historical and current Indian arguments to illustrate rhetorical delivery shaped by Nyāya and Sadharanikaran, a glimpse into rhetorical performance within a rich non-Western tradition.Keith S.LLOYD 2015外国语文研究2015,1,2:0
3Editorial显示文摘Welcome to the second edition of this two-part special issue of Journal of Science in Sport and Exercise(SSEJ)focussing on the topic of training young athletes.Part-two of the special issue continues to present a mix of review articles and empirical research that explore a diverse but intercon-nected range of topics.Throughout this special issue a multi-tude of perspectives and experimental designs are employed,bringing together inter and multidisciplinary research that consider a variety of interconnected themes related to train-ing different populations of young athletes.The collection of papers highlight how practitioners have the opportunity to positively impact on youth athletes in many different ways.Rhodri S.Lloyd Jon L.Oliver 2021Journal of Science in Sport and Exercise2021,3,1:0
4The Effects of a Four-Week Neuromuscular Training Program on Landing Kinematics in Pre-and Post-Peak Height Velocity Male Athletes显示文摘Purpose Neuromuscular training aims to enhance motor skill competency and increase muscle strength.However,the effectiveness of short-duration interventions focused on addressing lower limb injury risk factors in male youth athletes at different stages of maturity remains unknown.Methods Forty-eight young male academy cricket players[pre-peak height velocity(PHV)(n=26)and post-PHV(n=22)]were subdivided into an experimental group(EXP)who completed a 4-week progressive neuromuscular training program and controls(CON)participating in sport training only.Changes in injury risk were examined using the Tuck Jump Assess-ment(TJA)and Landing Error Scoring System(LESS).Results Total LESS score was significantly lower in both EXP maturity groups compared to CON following the 4-week program(10 to 6 and 6 to 4(~20%to 40%))in the pre-and post-PHV EXP groups,respectively.Significant within-group reductions in total LESS score were shown for the pre-PHV EXP group only(P<0.05).Conversely,greater changes in TJA total score were shown in post-PHV(5 to 3;40%)versus pre-PHV EXP(6 to 4.5;26%).Pre-PHV players showed positive changes in individual LESS criteria indicative of frontal plane control but not in knee valgus during the TJA,whereas post-PHV players did improve this criterion.Conclusion This study indicates it is possible to reduce TJA and LESS scores in male youth athletes by performing a 4-week neuromuscular training program,improving landing mechanics and reducing injury risk irrespective of maturity,but their effects are somewhat influenced by stage of maturation and the task performed.Paul J.Read Jon L.Oliver Ian J.Dobbs Megan A.Wong Nakul Tumkur Anil Kumar Rhodri S.Lloyd 2021Journal of Science in Sport and Exercise2021,3,1:0
5Is it Possible to Protect the Adolescent Brain with Internal Mechanisms from Repetitive Head Impacts:Results from a PhaseⅡSingle Cohort,Longitudinal,Self-Control Study显示文摘Purpose To quantify the effects of an externally worn collar device for mitigating the influence of repetitive head impacts on alterations to diffusion tensor imaging(DTI)metrics of white matter.Methods Fifteen female high-school soccer athletes(age:14.00-16.98 yrs)completed pre-and post-season DTI over two consecutive years,including measures of diffusivity,changes in which may be associated with brain dysfunction.The collar was worn during year 1(Yr1)but not during year 2(Yr2).Athlete exposures(AEs)and head impact exposure were recorded over the competitive seasons.Results There were no significant differences in AEs or head impact exposures between Yr1 and Yr2(P>0.05).In Yr2,there was significant pre-to post-season mean diffusivity and/or axial diffusivity reduction in multiple WM regions(cor-rected P<0.05).Pre-to post-season mean diffusivity,axial diffusivity,and radial diffusivity decreases were 3.04%±2.53%,2.97%±2.19%,and 3.37%±3.34%,respectively,significantly greater than pre-to post-season changes in Yr1(mean dif-fusivity:-0.31%±1.78%,P=0.0014;axial diffusivity:-0.02%±2.25%,P=0.0014;radial diffusivity:-0.63%±2.10%,P=0.0030).Conclusions Mild bilateral compression to athletes'internal jugular vein through collar application may have increased intracranial blood volume and spatially redistributed head-impact-derived brain energy absorption.However,future research is needed to elucidate the potential clinical significance of WM changes of various degrees.Clinical trails registration NCT03014492.Kelsey Logan Weihong Yuan Kim D.Barber Foss Jed A.Diekfuss Christopher A.DiCesare James Leach Mekibib Altaye Rhodri S.Lloyd Gregory D.Myer 2021Journal of Science in Sport and Exercise2021,3,1:0
6Prospective evaluation of health status, quality of life and clinical outcomes following implantable defibrillator generator exchange显示文摘BACKGROUND Little is known about health status and quality of life(QoL)after implantable cardioverter-defibrillator(ICD)generator exchange(GE).METHODS We prospectively followed patients undergoing first-time ICD GE.Serial assessments of health status were performed by administering the 36-Item Short Form Survey(SF-36).RESULTS Mean age was 67.5±14.3 years,left ventricle ejection fraction(LVEF)was 36.5%±15.0%and over 40%of the cohort had improved LVEF to>35%at the time of GE.SF-36 scores were significantly worse in physical/general health domains compared to domains of emotional/social well-being(P<0.001 for each comparison).Physical health scores were significantly worse among those with medical comorbidities including diabetes,chronic obstructive pulmonary disease and atrial fibrillation.Mean follow-up was 1.6±0.5 years after GE.Overall SF-36 scores remained stable across all domains during follow-up.Survival at 3 years post-GE was estimated at 80%.Five patients died during follow-up and most deaths were adjudicated as non-arrhythmic in origin.Four patients experienced appropriate ICD shocks after GE,three of whom had LVEF which remains impaired LVEF(i.e.,<35%)at the time of GE.CONCLUSION Patients undergoing ICD GE have significantly worse physical health compared to emotional/social well-being,which is associated with the presence of medical comorbidities.In terms of clinical outcomes,the incidence of appropriate shocks after GE among those with improvement in LVEF is very low,and most deaths post-procedure appear to be non-arrhythmic in origin.These data represent an attempt to more fully characterize the spectrum of QoL and clinical outcomes after GE.Faisal M Merchant John Larson Leon Darghosian Paige Smith Soroosh Kiani Stacy Westerman Anand D.Shah David S.Hirsh Michael S.Lloyd Angel R.Leon Mikhael F.El-Chami 2021Journal of Geriatric Cardiology2021,18,9:0
7Editorial显示文摘Welcome to a special issue of Journal of Science in Sport and Exercise(SSEJ)focussing on the topic of training young athletes.Fostering a well-rounded development pathway for young athletes remains a“hot topic”within the fields of pediatric exercise science,sport science and medicine,and strength and conditioning.Rhodri S.Lloyd Jon L.Oliver 2020Journal of Science in Sport and Exercise2020,2,4:0
8Utility of Kinetic and Kinematic Jumping and Landing Variables as Predictors of Injury Risk: A Systematic Review显示文摘Purpose Jump-landing assessments provide a means to quantify an individual’s ability to attenuate ground reaction forces,generate lower limb explosive power and maintain joint alignment.In order to identify risk factors that can be targeted through appropriate training interventions,it is necessary to establish which(scalar)objective kinetic,kinematic,and performance measures are most associated with lower-extremity injury.Methods Online searches of MEDLINE,SCOPUS,EBSCOHost,SPORTDiscus and PubMed databases were completed for all articles published before March 2020 in accordance with PRISMA guidelines.Results 40 articles investigating nine jump-landing assessments were included in this review.The 79%of studies using drop jump(n=14)observed an association with future injury,while only 8%of countermovement jump studies(n=13)observed an association with injury risk.The 57%of studies using unilateral assessments found associations with risk of injury(n=14).Studies using performance measures(jump height/distance)as outcome measure were only associated with injury risk in 30%of cases.However,those using kinetic and/or kinematic analyses(knee abduction moment,knee valgus angle,knee separation distance,peak ground reaction force)found associations with injury in 89%of studies.Conclusion The landing element of jump-landing assessments appears to be superior for identifying individuals at greater risk of injury;likely due to a closer representation of the injury mechanism.Consequently,jump-landing assessments that involve attenuation of impact forces such as the drop jump appear most suited for this purpose but should involve assessment of frontal plane knee motion and ground reaction forces.Jason S.Pedley Rhodri S.Lloyd Paul J.Read Isabel S.Moore Mark De Ste Croix Gregory D.Myer Jon L.Oliver 2020Journal of Science in Sport and Exercise2020,2,4:0
9The Influence of Biological Maturity on Dynamic Force-Time Variables and Vaulting Performance in Young Female Gymnasts显示文摘Purpose This cross-sectional study investigated dynamic force-time variables and vaulting performance in young female gymnasts of different maturity status.Methods 120 gymnasts aged 5-14 years were sub-divided into maturity groupings using percent of predicted adult height(%PAH)attained.Participants performed three jumping protocols,the squat jump(SJ),countermovement jump(CMJ)and drop jump(DJ),before completing straight jump vaults that were recorded using two-dimensional video.Results Jumping performance improved with biological maturity evidenced by the most mature gymnasts’producing sig-nificantly more absolute force(P<0.05;all d>0.78),impulse(P<0.05;all d>0.75)and power(P<0.05;all d>0.91)than the least mature group,resulting in the greater jump heights(P<0.05;all d>0.70).While,no significant differences were observed in relative peak force across multiple tests,measures of relative peak power did significantly increase with maturity.Based upon regression analyses,maturation was found to influence vertical take-off velocity during vaulting,explaining 41%of the variance in each jumping protocol.Across all tests,the DJ was found to have the highest predictive ability of vaulting vertical take-off velocity,explaining 55%of the total variance.Conclusion Biological maturation impacts jump height and underpinning mechanical variables in young female gymnasts.Vaulting vertical take-off velocity appears to be influenced by maturation and various dynamic force-time variables,par-ticularly those during DJ,which had the highest explained total variance.Sylvia Moeskops Jon L.Oliver Paul J.Read John B.Cronin Gregory D.Myer G.Gregory Haff Isabel S.Moore Rhodri S.Lloyd 2020Journal of Science in Sport and Exercise2020,2,4:0
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