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| 1 | Health-related fitness knowledge growth in middle school years:Individual-and school-level correlates显示文摘Background:Health-related fitness knowledge(HRFK)has been an essential concept for many health and physical education programs.There has been limited understanding and longitudinal investigation on HRFK growth.This longitudinal study examined HRFK growth and its individual-and school-level correlates in middle school years under 1 curriculum condition:Five for Life.Methods:Participants were 12,044 students from 47 middle schools.Data were collected at both individual/participant and school/institution levels.Individual-level variables included gender,grade,and HRFK test scores.School-level variables included percentage of students receiving free and reduced meals(FARM),student-to-faculty ratio for physical education,and school academic performance(SAP).We used hierarchical linear modeling to examine HRFK 3-year growth in relation to individual-and school-level correlates.Results:The average HRFK score at 6th grade for females was 42.81%±1.32%.The predicted HRFK growth was 17.06%±1.02%per year,holding other factors constant.A 1-standard deviation increase in FARM correlated with a 14.68%-point decrease in predicted test score(p=0.02).A 1-standard deviation increase in SAP was associated with an 11.90%-point increase in HRFK score.Males had a significantly lower growth rate than females during the middle school years(0.78%/year,p=0.02).Conclusion:The result showed that both individual-and school-level variables such as gender,FARM,and SAP influenced HRFK growth.Educators should heed gender differences in growth curves and recognize the correlates of school-level variables. | Xihe Zhu Justin A.Haegele Haichun Sun | 2020 | Journal of Sport and Health Science2020，9，6： | 5 |
| 2 | Diffusion-weighted MRI of hepatic tumor in rats:comparison between in vivo and postmortem imaging acquisitions显示文摘 | Xihe Sun Huaijun Wang Feng Chen | | 0，，： | 1 |
| 3 | Diffusion-weighted MRI of hepatic tumor in rats:comparison between in vivo and postmortem imaging acquisitions显示文摘 | Xihe Sun Huaijun Wang Feng Chen | 2009 | J Magn Reson Imaging2009，29，3： | 1 |
| 4 | 体育教学中影响学生热量消耗的因素(英文)显示文摘Background:Increasing caloric expenditure in physical education is considered an effective school-based approach to addressing the child obesity epidemic.This study was designed to determine synergistic influences of student characteristics and lesson factors on caloric expenditure in elementary and middle school physical education. Methods:The study used a multi-level design.Level-1 factors included personal characteristics:age,gender,and body mass index.Level-2 factors included lesson length,content,and school level.Based on the Center for Disease Control and Prevention age—gender adjusted growth chart,students in 87 classes from 14 elementary and 15 middle schools were pre-screened into 'Overweight','Healthy weight',or 'Thin' groups.One boy and one girl were randomly selected from each group in each class as data providers(264 elementary and 294 middle school students).Caloric expenditure was measured in 243 physical education lessons using accelerometers. Results:Analysis of variance revealed and hierarchical linear modeling confirmed separate age by body mass index,age by gender,and content by lesson—length interaction effects,suggesting that the personal and lesson factors influenced caloric expenditure independently.Older male and heavier students burned more calories in all lessons.Students burned more calories in 45—60 min sport skill or fitness lessons than in shorter (30 min) or longer(75—90 min) game or multi-activity lessons. Conclusions:The hypothesized cross-level interaction was not observed in the data.Caloric expenditure can be optimized in 45—60 min sport skill or fitness development lessons.It can be recommended that schools adopt 45—60 min lesson length and provide skill and fitness development tasks in physical education to maximize caloric expenditure. | Ang Chen Haichun Sun Xihe Zhu Catherine D.Ennis | 2012 | Journal of Sport and Health Science2012，1，1： | 1 |
| 5 | Photorefractive properties of MnO-doped near stoichiometric LiNbO3 crystals显示文摘 | SUN Zhijie LI Hongtao ZHEN Xihe | 2004 | J Phys Chem Solids2004，65，： | 1 |
| 6 | Magnetic resonance imaging after radiofrequency ablation in a rodent model of liver tumor: tissue characterization using a novel necrosis-avid contrast agent显示文摘 | Yicheng Ni Feng Chen Stefaan Mulier Xihe Sun Jie Yu Willy Landuyt Guy Marchal Alfons Verbruggen | 2006 | European Radiology2006，，5： | 1 |
| 7 | Rat cerebral ischemia induced with photochemical occlusion of proximal middle cerebral artery: a stroke model for MR imaging research显示文摘 | Feng Chen Yasuhiro Suzuki Nobuo Nagai Ronald Peeters Xihe Sun Walter Coudyzer Guy Marchal Yicheng Ni | 2004 | Magnetic Resonance Materials in Physics Biology and Medicine (-)2004，，3： | 1 |
| 8 | Treatment of Rodent Liver Tumor With Combretastatin A4 Phosphate: Noninvasive Therapeutic Evaluation Using Multiparametric Magnetic Resonance Imaging in Correlation With Microangiography and Histology显示文摘 | Huaijun Wang Xihe Sun Feng Chen Frederik De Keyzer Jie Yu Willy Landuyt Vincent Vandecaveye Ronald Peeters Hilde Bosmans Robert Hermans Guy Marchal Yicheng Ni | 2009 | Investigative Radiology2009，，1： | 1 |
| 9 | 显示文摘 | sun Zhije Li Hongtao Zhen Xihe | 2004 | Journal of Physics and Chemistry of Solids2004，65，： | 1 |
| 10 | Photorefractive properties of MnO-doped near stoichiometric LiNbO3 crystals显示文摘 | SUN Zhijie LI Hongtao ZHEN Xihe | 2004 | J Phys Chem Solids2004，65，： | 1 |
| 11 | Learners’motivational response to the Science,PE,&Me!curriculum:A situational interest perspective显示文摘Background:The Science,PE,&Me!(SPEM)curriculum is a concept-based physical education curriculum that offers students coherent educational experiences for constructing health-related fitness knowledge through movement experiences.The purpose of this study was to evaluate students’motivational response to the SPEM curriculum from the situational interest perspective.Methods:The study used a cluster randomized controlled design in which 30 elementary schools in one of the largest metropolitan areas in the eastern United States were randomly assigned to an experimental or comparison condition.Although all students in the 3rd,4th,and 5th grades in the targeted schools were eligible to participate in the study,a random sample of students from the experimental(n=1749;15 schools)and comparison groups(n=1985;15 schools)provided data.Students’motivational response to the SPEM curriculum or comparison curriculum was measured using the previously validated Situational Interest Scale-Elementary.Data were analyzed using structural mean modeling.Results:The results demonstrated that the experimental group(as reference group)showed significantly higher enjoyment(z=-2.01),challenge(z=-6.54),exploration(z=-12.195),novelty(z=-8.80),and attention demand(z=-7.90)than the comparison group.Conclusion:The findings indicate that the SPEM curriculum created a more situationally interesting context for learning than the comparison physical education curriculum. | Senlin Chen Haichun Sun Xihe Zhu Ang Chen Catherine D.Ennis(Posthumous) | 2021 | Journal of Sport and Health Science2021，10，2： | 0 |
| 12 | A Comparison of the Effects of Pentoxifylline on Quality of Fresh and Frozen-thawed Bull Spermatozoa显示文摘[Object]This study aimed to examine the effects of 3,7-dimethyl-1-(5-oxo-hexyl)-xanthine(pentoxifylline,PF)on the motility,mitochondrial activity,acrosome integrity and fertilization rate of spermatozoa in both fresh and frozen-thawed bull semen.[Method]Fresh and frozen-thawed bull spermatozoa were exposed to 5 mmol/L PF with untreated samples as controls.[Result]Fresh spermatozoa showed reduced(P<0.05)motility after 2 h incubation with PF whereas,surprisingly,frozen-thawed samples exhibited increased sperm motility(P<0.05)after 2 h incubation with PF and they also showed enhanced longevity compared to controls.Mitochondrial activity in both fresh and frozen-thawed bull spermatozoa increased(P<0.05)during 4 h incubation with PF whereas acrosome integrity remained unchanged in both types of semen.However,treatment with 5 mmol/L PF did not influence the in vitro fertilization efficiency of fresh spermatozoa but improved significantly(P<0.05)that of frozen-thawed spermatozoa.[Conclusion]These results indicate that PF can improve sperm quality of frozenthawed bull semen,and may improve pregnancy rates in bovine artificial insemination programmes employing frozen semen. | Jian ZHANG Huamin GUO Jie SU Lixia ZHAO Yunxia LI Wei SUN Hongmei HAN Shuxiang HU Gaoping ZHAO Yao LI Yanfeng DAI Xihe LI | 2014 | Agricultural Biotechnology2014，3，3： | 0 |
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