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1.
Jason Lake Simon Augustus Kieran Austin Paul Comfort John McMahon Peter Mundy 《Journal of sports sciences》2013,31(23):2685-2690
ABSTRACTThe aim of this study was to assess the reliability and validity of the bar-mounted PUSH BandTM 2.0 to determine peak and mean velocity during the bench press exercise with a moderate (60% one repetition maximum [1RM]) and heavy (90% 1RM) load. We did this by simultaneously recording peak and mean velocity using the PUSH BandTM 2.0 and three-dimensional motion capture from participants bench pressing with 60% and 90% 1RM. We used ordinary least products regression to assess within-session reliability and whether the PUSH BandTM 2.0 could accurately predict motion capture velocity. Results showed that PUSH BandTM 2.0 and motion capture peak and mean velocity reliability was acceptable with both loads. While there was a tendency for the PUSH BandTM 2.0 to slightly overestimate peak and mean velocity, there was no fixed bias. However, mean velocity with 60 and 90% 1RM demonstrated proportional bias (differences between predicted and motion capture values increase with magnitude). Therefore, PUSH BandTM 2.0 peak velocity with 60 and 90% 1RM is valid, but mean velocity is not. 相似文献
2.
Titilayo Comfort Ilesanmi 《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(1):35-45
Digitization of journal collections in libraries is inevitable with the advent of Information Communication Technology (ICT). There is a need to digitize journals in the academic library in order to preserve and to give wider visibility and accessibility to information resources for teaching, learning, and research. This article describes the processes of journal collection digitization in Kenneth Dike Library, University of Ibadan. Underfunding and copyright clearance are the challenges encountered, among others. The study recommends adequate funding and concludes that the benefit of instant access to digital information is the most distinguishing attribute in this present information age. 相似文献
3.
This work explores the use of Clemson University's institutional repository and library catalog in promoting and providing access to the patents granted to its inventors. More specifically, the authors outline the project from generating metadata for patents and crosswalking it into a form that can be batch-uploaded to a bepress Digital Commons repository. They then explore the process of harvesting the records from the repository and using MarcEdit to crosswalk it into the library catalog. The process could easily be adapted to other nontraditional forms of scholarship. 相似文献
4.
Thomas Dos’Santos Paul Comfort Paul A. Jones 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(4):483-492
ABSTRACT The aims of this study were twofold: firstly, to compare lower limb kinematic and kinetic variables during a sprint and 90° cutting task between two averaging methods of obtaining discrete data (peak of average profile vs. average of individual trial peaks); secondly, to determine the effect of averaging methods on participant ranking of each variable within a group. Twenty-two participants, from multiple sports, performed a 90° cut, whereby lower limb kinematics and kinetics were assessed via 3D motion and ground reaction force (GRF) analysis. Six of the eight dependent variables (vertical and horizontal GRF; hip flexor, knee flexor, and knee abduction moments, and knee abduction angle) were significantly greater (p ≤ 0.001, g = 0.10–0.37, 2.74–10.40%) when expressed as an average of trial peaks compared to peak of average profiles. Trivial (g ≤ 0.04) and minimal differences (≤ 0.94%) were observed in peak hip and knee flexion angle between averaging methods. Very strong correlations (ρ ≥ 0.901, p < 0.001) were observed for rankings of participants between averaging methods for all variables. Practitioners and researchers should obtain discrete data based on the average of trial peaks because it is not influenced by misalignments and variations in trial peak locations, in contrast to the peak from average profile. 相似文献
5.
Paul Comfort Paul A. Jones Rebecca Udall 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(2):139-156
Power is a fundamental component for many sporting activities; while the load that elicits peak power during different exercises and differences between sexes remains unclear. This study aims to determine the effect of sex and load on kinematic and kinetic variables during the mid-thigh clean pull. Men (n = 10) and women (n = 10) performed the mid-thigh clean pull at intensities of 40%, 60%, 80%, 100%, 120%, and 140% of one repetition maximum (1RM) power clean in a randomised and counter-balanced order, while assessing bar velocity, bar displacement, power, force, and impulse. Two-way analysis of variance revealed that men demonstrated significantly greater (p < 0.05) values for all variables across loads, excluding bar velocity. Men demonstrated significantly greater (p < 0.05) bar velocities with 40–80% 1RM; in contrast, women demonstrated significantly (p < 0.05) higher velocities with 120–140% 1RM. Irrespective of sex significantly greater (p < 0.05), system peak power, bar velocity, and displacement occurred with 40% 1RM. In contrast, peak force and impulse were significantly (p < 0.05) greater with 140% 1RM. When performing the mid-thigh clean pull, to maximise system power or bar velocity, lower loads (40–60% 1RM) are recommended. When training force production or impulse, higher loads (120–140% 1RM) are recommended, when using the mid-thigh clean pull. 相似文献
6.
Comfort B.S. Mndebele 《The Journal of Agricultural Education and Extension》2013,19(4):259-261
Abstract The student enterprise project provides an interesting and challenging vehicle for the acquisition and assessment of varied technical and managerial skills. It links classroom instruction and the working world. This article profiles home-based vocational agriculture enterprises in a pilot curriculum. Both students and teachers experience challenges pertaining to the operating and supervising of small agrarian business enterprises. 相似文献
7.
This article discusses the opportunity that the Common Core State Standards (CCSS) present for enhancing formative assessment (FA) in history and social studies classrooms. There is evidence that FA can enhance learning for students if implemented well. Unfortunately, teachers continue to be challenged in implementing FA in their classrooms. We examined reading standards for literacy in history and social studies in lesson plans created by preservice teachers in order to discuss opportunities presented by the CCSS for enhancing FA. 相似文献
8.
Comfort M. Ateh 《Educational Assessment》2013,18(2):112-131
In evaluating teachers' instructional decisions during instruction, it is clear that the nature of their elicitation is crucial for student learning. When instructional decisions are informed by information about students' conceptual understanding, significant learning is possible. This article examined the elicitation practices of two high school science teachers who indicated that they made instructional decisions based on the elicited evidence of students' knowledge but whose elicitation practices were characteristic of low-level elicitation. The teachers focused on students' responses that used canonical terms and expressed acceptable knowledge. The teachers demonstrated low-level responsiveness because they did not have full access to students' knowledge. The elicited evidence of students' knowledge that was used in making instructional decisions was not representative of students' conceptual understanding. There was, thus, a mismatch between the teachers' perspectives about their formative assessment practice and what is considered effective formative assessment. 相似文献
9.
Olugbenga Jelil Ladebo Olalekan Jacob Olaoye Comfort Oyekale Adamu 《The Journal of Agricultural Education and Extension》2013,19(3):249-263
Abstract This study proposes relationships between job satisfaction, affective commitment (organization, supervisor and workgroup), and exchange relations with supervisor, organization and workgroup members among extension personnel. Perceived self-esteem (SE) is hypothesized to moderate relations between the social exchange foci and the corresponding commitment foci and global job satisfaction. One hundred and fifty-six extension personnel (i.e. 93.41% responses) from Ogun State Agricultural Development Programme in Southwest Nigeria provided the useable data for this study. The results of the multiple moderated regression analyses indicate that there are positive relations between job satisfaction and SE (β =0.30, p <0.0001), and relations with organization (β =0.62, p <0.0001). There are positive relations between SE and organizational commitment (β =0.58, p <0.0001), supervisor commitment (β =0.28, p <0.0001), and workgroup commitment (β =0.33, p <0.0001). The notion of most salient foci having the strongest effect on an individual's behavior received mixed support in this study. There is independence between workgroup commitment and relations with workgroup members (β =0.01, ns). The hypothesized moderating effect of SE on the predictors-criterions linkages is not supported by the results. The implications of the results are discussed. 相似文献
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