Positive and Negative Self‐Perceptions: Is There a Cyclical Relationship Between Teachers' and Students' Perceptions of Effort,Strategy Use,and Academic Performance?

This study was part of a larger research program designed to investigate how effort interacts with strategy use to mediate the academic performance of successful students with learning disabilities (LD) and how teachers' and students' perceptions influence these relationships. The sample consisted of 46 students with LD and 46 matched students without LD and their seven teachers from Grades 6–8. A self‐report survey was used to obtain an index of students' perceptions of their effort, strategy use, academic struggles, and academic competence. Our findings indicated that students with LD with positive academic self‐perceptions were more likely to work hard and to use strategies in their schoolwork than were students with LD who had negative academic self‐perceptions. Teachers viewed students with LD who had positive academic self‐perceptions as working equally hard and attaining similar levels of academic competence as their peers without LD. In marked contrast, students with LD who had negative academic self‐perceptions were judged by their teachers as making limited effort in school and achieving at a below‐average level in comparison with their peers. Findings suggested a cyclical relationship between students' self‐perceptions and their teachers' judgments and supported the notion of a reciprocal strategy‐effort interaction.     

对湖北省少数民族贫困地区农村体育人口的调查

为了解湖北省少数民族贫困地区农村体育人口的现状 ,找出在湖北省少数民族贫困地区体育运动发展存在的问题 ,为制定当地体育发展规划提供依据 ,运用分层抽样法选取少数民族地区 10县市共 6 2 0 0名农村人口进行问卷调查和访问、座谈。结果表明 :湖北省少数民族地区农村体育人口的数量不仅大大低于我国农村体育人口的平均水平 ,也大大低于我国少数民族地区体育人口的平均水平 ,体育观念陈旧 ,基层体育组织缺乏 ,场地、器材严重不足 ,繁重的体力劳动导致农民体力透支等是导致当地体育人口极低的主要原因。     

Executive impairment determines ADHD medication response: implications for academic achievement

Methylphenidate (MPH) often ameliorates attention-deficit/hyperactivity disorder (ADHD) behavioral dysfunction according to indirect informant reports and rating scales. The standard of care behavioral MPH titration approach seldom includes direct neuropsychological or academic assessment data to determine treatment efficacy. Documenting "cool" executive-working memory (EWM) and "hot" self-regulation (SR) neuropsychological impairments could aid in differential diagnosis of ADHD subtypes and determining cognitive and academic MPH response. In this study, children aged 6 to 16 with ADHD inattentive type (IT; n = 19) and combined type (n = 33)/hyperactive-impulsive type (n = 4) (CT) participated in double-blind placebo-controlled MPH trials with baseline and randomized placebo, low MPH dose, and high MPH dose conditions. EWM/ SR measures and behavior ratings/classroom observations were rank ordered separately across conditions, with nonparametric randomization tests conducted to determine individual MPH response. Participants were subsequently grouped according to their level of cool EWM and hot SR circuit dysfunction. Robust cognitive and behavioral MPH response was achieved for children with significant baseline EWM/SR impairment, yet response was poor for those with adequate EWM/ SR baseline performance. Even for strong MPH responders, the best dose for neuropsychological functioning was typically lower than the best dose for behavior. Findings offer one possible explanation for why long-term academic MPH treatment gains in ADHD have not been realized. Implications for academic achievement and medication titration practices for children with behaviorally diagnosed ADHD will be discussed.     

浙江省大学生保健行为调查

通过对浙江省 985名大学生 34项健康行为的指标进行调查发现 ,大多数大学生在珍惜健康和为健康投资上做得很不自觉 ,也很不理性 ,吸烟、酗酒、熬夜、节食、纵欲、缺乏体育锻炼、锻炼不科学等现象极为普遍。应引起体育与健康教育决策部门的注意。     

A Rare Case of Short-Chain Acyl-COA Dehydrogenase Deficiency: The Apparent Rarity of the Disorder Results in Under Diagnosis

Short-chain acyl-CoA dehydrogenase (ACAD) deficiency is an extremely rare inherited mitochondrial disorder of fat metabolism. This belongs to a group of diseases known as fatty acid oxidation disorders. Screening programmes have provided evidence that all the fatty acid oxidation disorders combined are among the most common inborn errors of metabolism. Mitochondrial beta oxidation of fatty acids is an essential energy producing pathway. It is a particularly important pathway during prolonged periods of starvation and during periods of reduced caloric intake due to gastrointestinal illness or increased energy expenditure during febrile illness. The most common presentation is an acute episode of life threatening coma and hypoglycemia induced by a period of fasting due to defective hepatic ketogenesis. Here, the case of a 4 month old female patient who had seizures since the third day of her birth and persistent hypoglycemia is described. She was born to parents of second degree consanguinity after 10 years of infertility treatment. There was history of delayed cry after birth. Metabolic screening for TSH, galactosemia, 17-OHP, G6PD, cystic fibrosis, biotinidase were normal. Tandem mass spectrometric (TMS) screening for blood amino acids, organic acids, fatty acids showed elevated butyryl carnitine (C4) as 3.40 μmol/L (normal <2.00 μmol/L), hexanoyl carnitine (C6) as 0.92 μmol/L (normal <0.72 μmol/L), C4/C3 as 2.93 μmol/L (normal <1.18 μmol/L). The child was started immediately on carnitor syrup (carnitine) 1/2 ml twice daily. Limitation of fasting stress and dietary fat was advised. Baby responded well by gaining weight and seizures were controlled. Until now, less than 25 patients have been reported worldwide. The limited number of patients diagnosed until now is due to the rarity of the disorder resulting in under diagnosis.     

Scapulothoracic kinematics during tennis forehand drive

Scapular dyskinesis is recognized as an abnormality in the kinetic chain; yet, there has been little research quantifying scapular motion during sport tasks. Tennis forehand drives of eight highly skilled tennis players were studied to assess the scapulothoracic kinematics and evaluate repeatability using video-based motion analysis. Scapulothoracic downward/upward rotation, posterior/anterior tilt, and internal/external rotation were computed using an acromial marker cluster. On average, the upward rotation, anterior tilt, and internal rotation varied from 1° to 26°, from 7° to 32°, and from 42° to 100°, respectively, during the tennis forehand drive. During the backswing and forward swing phases of the forehand stroke, small changes were observed for the three scapular angle values, while all angles increased rapidly during the follow-through phase. This suggests that the tennis forehand drive may contribute to scapula dyskinesis, mainly due to the great amplitude in scapulothoracic anterior tilt and internal rotation observed during the follow-through phase. Knowledge of normal scapula motion during sport tasks performed at high velocity could improve the understanding of various sport-specific adaptations and pathologies.     

Partial Empty Sella Syndrome: A Case Report and Review

Empty sella syndrome is a damaged pituitary gland. Either the gland has shrunk or has been crushed and flattened making it look like an empty sella on MRI scan. The reported prevalence of primary empty sella in general population is 8–35 %. The incidence is more in females, the ratio being 5:1. It is generally found in middle aged women who are obese and hypertensive.     

医学编辑成长经历分析及培养模式探讨

医学编辑对编辑工作的认识一般经历感性一任性一理性3个阶段,必须加强兴趣培养,并尽快从任性期过渡到理性期.医学期刊的迅猛发展对编辑的素质提出了新要求.新形势下,必须改革医学编辑培养模式,使他们具备讲科学、重实践、懂专业、会策划、爱学习等能力.具体而言,可在编辑初审、审稿专家遴选、专家意见整合、编辑加工技巧等多个环节提高医学编辑素养,以推动医学期刊的发展.