Impact forces and neck muscle activity in heading by collegiate female soccer players

Three soccer header types (shooting, clearing and passing) and two heading approaches (standing and jumping) were manipulated to quantify impact forces and neck muscle activity in elite female soccer players. The 15 participants were Division I intercollegiate soccer players. Impact forces were measured by a 15-sensor pressure array secured on the forehead. The electromyographic (EMG) activity of the left and right sternocleidomastoid and trapezius muscles was recorded using surface electrodes. Maximum impact forces and impulses as well as the EMG data were analysed with separate repeated-measures analyses of variance. Impact forces and impulses did not differ among the header types or approaches. Higher values were found for jumping versus standing headers in the mean normalized EMG for the right sternocleidomastoid. In addition, the integrated EMG was greater for the right sternocleidomastoid and right and left trapezius (P < 0.05). The sternocleidomastoid became active earlier than the trapezius and showed greater activity before ball contact. The trapezius became active just before ball contact and showed greater activity after ball contact. The increased muscle activity observed in the neck during the jumping approach appears to stabilize the connection between the head and body, thereby increasing the stability of the head-neck complex.     

A recessive gene controlling male sterility sensitive to short daylength/low temperature in wheat (Triticum aestivum L.)

Utilization of a two-line breeding system via photoperiod-thermo sensitive male sterility has a great potential for hybrid production in wheat (Triticum aestivum L.). 337S is a novel wheat male sterile line sensitive to both short daylength/low temperature and long daylength/high temperature. Five F₂ populations derived from the crosses between 337S and five common wheat varieties were developed for genetic analysis. All F₁’s were highly fertile while segregation occurred in the F₂ populations with a ratio of 3 fertile:1 sterile under short daylength/low temperature. It is shown that male sterility in 337S was controlled by a single recessive gene, temporarily designated as wptms3. Bulked segregant analysis (BSA) coupled with simple sequence repeat (SSR) markers was applied to map the sterile gene using one mapping population. The wptms3 gene was mapped to chromosome arm 1BS and flanked by Xgwm413 and Xgwm182 at a genetic distance of 3.2 and 23.5 cM, respectively. The accuracy and efficiency of marker-assisted selection were evaluated and proved essential for identifying homozygous recessive male sterile genotypes of the wptms3 gene in F₂ generation.     

Contextualizing the effects of childhood sexual abuse on adult self- and social functioning: an attachment theory perspective

OBJECTIVE: This retrospective survey study explored the hypothesis that multiple maltreatment and loss experiences in early childhood would interfere with the formation of secure attachments, creating (1) an increased vulnerability to childhood sexual abuse (CSA), and (2) adult problems in self- and social functioning. METHOD: Data were collected from 687 undergraduates on an urban, commuter campus. They were analyzed by means of between group (individuals with and without CSA histories) and within group (individuals with CSA histories) path analytic models. RESULTS: The number of maltreatment and loss experiences encountered in early childhood predicted greater CSA frequency in childhood and increased maltreatment in adulthood in the form of more frequent reports of sexual, physical, and emotional abuse. Childhood maltreatment and loss experiences also predicted poor adult self-functioning in the form of higher levels of depression and lower levels of self-esteem. Self-blame in response to CSA and maltreatment in adult relationships also predicted poorer adult self- and social functioning for individuals with CSA histories. CONCLUSIONS: Findings support both direct and mediational effects of childhood maltreatment and loss experiences on adult self- and social functioning and are consistent with predictions derived from attachment theory.     

Learning of musculoskeletal ligament stress testing in a gross anatomy laboratory

Human anatomy in physical therapy programs is a basic science course serving as a foundation for subsequent clinical courses. Integration of anatomy with a clinical emphasis throughout a curriculum provides opportunities for reinforcement of previously learned material. Considering the human cadaver laboratory as a fixed cost to our program, we sought opportunities to add value to the resource via vertical integration into a clinical skills course taught later in the curriculum. We designed an opportunity for second-year physical therapy students to revisit the human anatomy laboratory to study select clinical musculoskeletal tests and the associated anatomy in a clinically relevant context. Students performed select orthopedic ligament test on human cadavers, then incised specific structures and repeated the tests. Students were able to feel and visualize the function of pertinent anatomy associated with the clinical tests. Ninety-five percent of respondents reported that the ligament stress testing experience enhanced their understanding of orthopedic clinical tests with 91% reporting an enhanced understanding of anatomy related to specific clinical tests. Likewise, the experience was perceived as enjoyable and valuable with 86% of respondents reporting the experience as enjoyable and 100% responding the experience should continue as part of the curriculum.     

在RILN数据库中中文与日文专著档案的质量与时效

在日益增长的未处理馆藏的压力下,东亚图书馆愈加信赖他们目录付本中两个国家的文献目录的及时性。同时,图书馆也涉及到这两个数据库中中文,日文以及韩国文字(以下简称(CJK)档案的质量与时效。并测定了当今中文与日文资料目录付本的可靠性,同时也鉴定了一些与目录质量相关的具体问题。在1992年11月到1993年3月间收到的518份中文标题     

Emotion and emotion regulation: from another perspective

An overview of the content of the From Another Perspective collection on emotion and emotion regulation is provided. The lead article identifies fundamental issues of definition and the commentaries represent varying theoretical and methodological perspectives on emotion and emotion regulation. Together, the articles discuss the promises and pitfalls of emotion research and its potential for understanding child development.     

Evaluating deaf students' readiness to meet the English language and literacy demands of postsecondary educational programs

The purpose of this study was to investigate alternative methods for evaluating deaf students' readiness to meet the English language and literacy demands of postsecondary educational programs. In the first part of the study, scores obtained by a large sample of deaf students on the ACT Assessment (ACT Composite score and scores on the ACT English and Reading tests) were compared to their scores on various measures of English language and literacy skills. In the second part of the study, the performance of a smaller sample of deaf students on the ESL Reading and ESL Grammar/Usage components of COMPASS/ESL was compared to their performance on a set of concurrent measures of English skills. The results of this investigation demonstrate that neither the ACT Assessment nor COMPASS/ESL are appropriate for the full range of deaf students seeking admission to postsecondary educational programs. However, the ACT Assessment is appropriate for deaf students seeking admission to transferable (BS and AAS) degree programs, and the ESL Reading and Grammar/Usage tests appear to be appropriate for deaf students seeking admission to nontransferable (AOS) degree programs. Taken together, the combination of the ACT Assessment and COMPASS/ESL appear able to provide a valid, reliable, and coherent approach to admissions screening assessment for the full range of deaf students seeking admission to postsecondary programs.     

Predictive performance of ‘Diprifusor＇ TCI system in patients during upper abdominal surgery under propofol／fentanyl anesthesia

Objective: To evaluate the predictive performance of ‘Diprifusor‘ TCI (target-controlled infusion) system for its better application in clinical anesthesia. Methods: The predictive performance of a ‘Diprifusor‘ TCI system was investigated in 27 Chinese patients (16 males and 11 females) during upper abdominal surgery under total intravenous anesthesia (TIVA) with propofol/fentanyl. Measured arterial propofol concentrations were compared with the values predicted by the TCI infusion system.Performance was determined by the median performance error (MDPE), the median absolute performance error (MDAPE), the divergence (the percentage change of the absolute PE with time), and the wobble (the median absolute deviation of each PE from the MDPE). Results: The median (range) values of 14.9% (-21.6%～42.9%) for MDPE, 23.3% (6.9%～62.5%) for MDAPE, -1.9% h^-1(-32.7%～23.0% h^-1) for divergence, and 18.9% (4.2%～59.6%) for wobble were obtained from 227 samples from all patients.For the studied population, the PE did not increase with time but with increasing target propofol concentration, particularly following induction. Conclusions: The control of depth of anaesthesia was good in all patients undergoing upper abdominal surgical operation and the predictive performance of the ‘Diprifusor‘ target controlled infusion system was considered acceptable for clinical purposes. But the relatively bigger wobble showed that the pharmacokinetic model is not so suitable and requires improvement.