My Religious Education Sangha and Dharma: Learning-Teaching as an Asian in the North American Diaspora     

Greer Anne Wenh-In Ng 《Religious education (Chicago, Ill.)》2018,113(2):165-172

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A preliminary exploration of uppercase letter-name knowledge among students with significant cognitive disabilities     

Claire W. Greer  Karen A. Erickson 《Reading and writing》2018,31(1):173-183

There are several factors known to impact the alphabet knowledge of young children without disabilities. The impact of these factors on the alphabet knowledge of students with significant cognitive disabilities is unknown. The purpose of this preliminary investigation was to explore the impact of three factors that might influence uppercase alphabet knowledge among students with significant cognitive disabilities: own name, letter order in the alphabet string, and letter frequency. Archival data documenting identification of each of the 26 uppercase letters of the alphabet for 131 8- to 21-year-old students were analyzed using a multilevel logistic regression model. While the use of extant data has limitations, results indicated that own-name advantage gave students a 10% greater likelihood of knowing the first letter of their own first name/nickname than any other alphabet letter. Letter-order analysis showed there were differences between letters found earlier in the alphabet string versus those that were found later in the alphabet string; however, the results were not statistically significant. Letter-frequency analysis did not reveal a significant impact of frequency on letter name knowledge in this sample. The findings provide preliminary evidence that at least some of the factors that influence alphabet knowledge in young children without disabilities also impact students with significant cognitive disabilities and point to the need for more research in this area.  相似文献   

Effects of intensity on muscle-specific voluntary electromechanical delay and relaxation electromechanical delay     

Cory M. Smith  Terry J. Housh  Ethan C. Hill  Josh L. Keller  Glen O. Johnson  Richard J. Schmidt 《Journal of sports sciences》2018,36(11):1196-1203

The purposes of this study were to examine: 1) the potential muscle-specific differences in voluntary electromechanical delay (EMD) and relaxation electromechanical delay (R-EMD), and 2) the effects of intensity on EMD and R-EMD during step incremental isometric muscle actions from 10 to 100% maximal voluntary isometric contraction (MVIC). EMD and R-EMD measures were calculated from the simultaneous assessments of electromyography, mechanomyography, and force production from the vastus lateralis (VL), vastus medialis (VM), and rectus femoris (RF) during step isometric muscle actions. There were no differences between the VL, VM, and RF for the voluntary EMD_E-M (onsets of the electromyographic to mechanomyographic signals), EMD_M-F (onsets the mechanomyographic to force production), or EMD_E-F (onsets of the electromyographic signal to force production) as well as R-EMD_E-M (cessation of electromyographic to mechanomyographic signal), R-EMD_M-F (cessation of mechanomyographic signal to force cessation), or R-EMD_E-F (cessation of electromyorgraphic signal to force cessation) at any intensity. There were decreases in all EMD and R-EMD measures with increases in intensity. The relative contributions from EMD_E-M and EMD_M-F to EMD_E-F as well as R-EMD_E-M and R-EMD_M-F to R-EMD_E-F remained similar across all intensities. The superficial muscles of the quadriceps femoris shared similar EMD and R-EMD measurements.  相似文献   

Feasibility for the Use of a Standardized Fitness Testing Protocol Among Australian Fitness Industry Professionals     

Jason A. Bennie  Glen H. Wiesner  Ineke Vergeer  Tracy L. Kolbe-Alexander  Katrien De Cocker  Chris Alexander 《Research quarterly for exercise and sport》2018,89(3):380-385

Purpose: There is currently no standardized testing protocol for assessing clients’ fitness/health within the Australian fitness industry. This study examined the perceptions of the feasibility of using a standardized testing protocol among Australian fitness industry professionals. Method: In 2014, 1,206 registered fitness industry professionals (aged 17–69 years) completed an online survey. Perceived feasibility for using a standardized testing protocol was assessed based on responses to 6 items. Respondents were classified as having a high level of perceived feasibility if they reported all 6 items to be “definitely feasible.” A multivariate logistic regression analysis, adjusting for demographic and fitness industry-related factors (e.g., qualification/years of experience), assessed the likelihood of having a high level of perceived feasibility. Results: Overall, 25.5% (95% CI [23.1%, 28.0%]) of the sample perceived the use of a standardized testing protocol as highly feasible. Items ranked most often as “definitely feasible” were “undertaking training to use the protocol” (55%) and “conducting follow-up testing every 6 to 12 weeks” (52%). After adjustment for the effect of confounding factors, casually employed professionals (OR = 0.63; 95% CI [0.45, 0.90]) and group instructors (OR = 0.58; 95% CI [0.41, 0.82]) were less likely to perceive standardized testing protocols as highly feasible. Conclusions: Among a large sample of Australian fitness industry professionals, slightly more than a quarter perceived using a standardized testing protocol to be highly feasible. Group instructors and casual employees perceived lower feasibility. Further research should determine the barriers to implementing a standardized testing protocol across the fitness industry.  相似文献   

Cardiac Dimensions in Elite Young Track Athletes     

Gerald D. Tharp  William G. Thorland  Glen O. Johnson  James B. Peter 《Research quarterly for exercise and sport》2013,84(2):139-143

The purpose of the study was to compare young sprint and distance runners for changes in their cardiac dimensions with increased age (10–17 years) or body surface area (1–2 m²). Echocardiographic dimensions were obtained on 73 male track athletes competing in the 1983 National Age Group Track and Field Association championships. Each group of athletes was also compared with a hypothetical normal population (matched for weight and age) generated from prediction equations derived by Henry, Gardin, & Ware (1980). The cardiac dimensions examined were: Left ventricular internal diameter, left ventricular posterior wall thickness, and interventricular septum thickness. The male distance runners (n = 38) had a significantly greater increase in left ventricular posterior wall thickness and interventricular septum thickness with increasing age or increasing body surface area compared to the sprinters (n = 35) or compared to the predicted normal population. The left ventricular internal diameter was not significantly different between the groups. These results indicate that the hearts of male distance runners are undergoing a training hypertrophy whereas the hearts of sprinters are no different than hearts in a normal population. The changes in cardiac dimensions of these young athletes run counter to the generalizations stated for adult athletes: That endurance training enlarges the left ventricular internal diameter, but does not increase the left ventricular posterior wall or interventricular septum thickness.  相似文献   

Validity of Palpation Recovery Pulse Rate to Estimate Exercise Heart Rate Following Four Intensities of Bench Step Exercise     

Nancy L. Greer  Frank I. Katch 《Research quarterly for exercise and sport》2013,84(4):340-343

Abstract

Previous investigations regarding activity during the post-knowledge of results (KR) interval have considered the performance of interference groups over KR-supplied acquisition trials as indicative of effects upon learning. The absence of transfer tests in these studies, however, preclude such an assumption. Indeed, the use of a retention test in the present investigation (no-KR trials following an interpolated phase) provided evidence suggesting that, while activity during the post-KR interval is detrimental to performance, no such assumption can be made regarding this effect upon learning. These findings are discussed relative to recent arguments that some of the commonly accepted “Laws of KR” may be contradictory when applied simultaneously to motor learning and performance.  相似文献   

Baseball     

Rafael Escamilla  Glen Fleisig  Steven Barrentine  James Andrews  Claude Moorman III 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):213-228

The purpose of this study was to quantify and compare kinematic, temporal, and kinetic characteristics of American and Korean professional pitchers in order to investigate differences in pitching mechanics, performance, and injury risks among two different cultures and populations of baseball pitchers. Eleven American and eight Korean healthy professional baseball pitchers threw multiple fastball pitches off an indoor throwing mound positioned at regulation distance from home plate. A Motion Analysis three‐dimensional automatic digitizing system was used to collect 200 Hz video data from four electronically synchronized cameras. Twenty kinematic, six temporal, and 11 kinetic variables were analyzed at lead foot contact, during the arm cocking and arm acceleration phases, at ball release, and during the arm deceleration phase. A radar gun was used to quantify ball velocity. At lead foot contact, the American pitchers had significantly greater horizontal abduction of the throwing shoulder, while Korean pitchers exhibited significantly greater abduction and external rotation of the throwing shoulder. During arm cocking, the American pitchers displayed significantly greater maximum shoulder external rotation and maximum pelvis angular velocity. At the instant of ball release, the American pitchers had significantly greater forward trunk tilt and ball velocity and significantly less knee flexion, which help explain why the American pitchers had 10% greater ball velocity compared to the Korean pitchers. The American pitchers had significantly greater maximum shoulder internal rotation torque and maximum elbow varus torque during arm cocking, significantly greater elbow flexion torque during arm acceleration, and significantly greater shoulder and elbow proximal forces during arm deceleration. While greater shoulder and elbow forces and torques generated in the American pitchers helped generate greater ball velocity for the American group, these greater kinetics may predispose this group to a higher risk of shoulder and elbow injuries.  相似文献   

Kinematic and electromyographic comparisons between chin-ups and lat-pull down exercises     

Kenji Doma  Glen B. Deakin  Kevin F. Ness 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(3):302-313

The purpose of this study was to compare kinematics and muscle activity between chin-ups and lat-pull down exercises and between muscle groups during the two exercises. Normalized electromyography (EMG) of biceps brachii (BB), triceps brachii (TB), pectoralis major (PM), latissimus dorsi (LD), rectus abdominus (RA), and erector spinae (ES) and kinematics of back, shoulder, and seventh cervical vertebrae (C7) was analysed during chin-ups and lat-pull down exercises. Normalized EMG of BB and ES and kinematics of shoulder and C7 for chin-ups were greater than lat-pull down exercises during the concentric phase (p < 0.05). For the eccentric phase, RA during lat-pull down exercises was greater than chin-ups and the kinematics of C7 during chin-ups was greater than lat-pull down exercises (p < 0.05). For chin-ups, BB, LD, and ES were greater than PM during the concentric phase, whereas BB and LD were greater than TB, and LD was greater than RA during the eccentric phase (p < 0.05). For lat-pull down exercise, BB and LD were greater than PM, TB, and ES during the concentric phase, whereas LD was greater than PM, TB, and BB during the eccentric phase (p < 0.05). Subsequently, chin-ups appears to be a more functional exercise.  相似文献   

Modelling reality in mathematics classrooms: The case of word problems     

Brian Greer 《Learning and Instruction》1997,7(4):293-307

An abundance of recent research, in many countries, has documented a very widespread tendency of children to answer school mathematics word problems with apparent disregard for the reality of the situations described by the text of these problems. Analysis of this behaviour strongly suggests that an explanation is not to be found in some cognitive deficit of the children, but rather in the culture of the classroom wherein word problems are presented in stereotyped fashion, with an implicit assumption that a solution involving the application of one or more of the basic arithmetical operations to the numbers mentioned in the text is appropriate and unproblematical. Taking such contextual influences into account, the observed behaviour of the children may be considered a reasonable response. An alternative conceptualisation of word problems, as situations calling for mathematical modelling taking into account real-world knowledge where appropriate, is proposed, with suggestions as to how it could be implemented.  相似文献   

Overview of innovations in organization for learning     

Glen Heathers 《Interchange》1972,3(2-3):47-68

Five approaches to organization for learning are reviewed: student grouping practices, nongrading, individualizing instruction, departmentalization in the elementary school, and cooperative teaching. The review relates these approaches to the accomplishment of eight basic instructional aims in the cognitive and affective areas. The critical review of each type of organizational plan considers problems of design, implementation, and evaluation. The general conclusion reached is that, while several of the approaches hold considerable promise for improving instruction, there usually are serious shortcomings in program design and implementation that prevent determining their potential contributions.

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Résumé Cinq voies d'accès à l'organisation de l'instruction sont passées en revue: techniques de groupement d'élèves, non-gradation, instruction individualisante, mise en départements en école élémentaire, et enseignement co-opératif. L'étude rapporte ces approches à l'accomplissement de huit buts fondamentaux d'instruction sur les plans cognitifs et affectifs. L'examen critique de chaque type de plan d'organisation considère les problèmes de dessin, d'exécution, et d'évaluation. La conclusion générale atteinte est, bien que plusieurs approches s'annoncent très bien pour améliorer l'instruction, on trouve presque toujours de sérieux défauts dans le dessin et l'exécution des plans d'études qui empêchent de définir leur apport potentiel.

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