排序方式： 共有48条查询结果，搜索用时 15 毫秒
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Reza Feyzi-Behnagh Roger Azevedo Elizabeth Legowski Kayse Reitmeyer Eugene Tseytlin Rebecca S. Crowley 《Instructional Science》2014,42(2):159-181
In this study, we examined the effect of two metacognitive scaffolds on the accuracy of confidence judgments made while diagnosing dermatopathology slides in SlideTutor. Thirty-one (N = 31) first- to fourth-year pathology and dermatology residents were randomly assigned to one of the two scaffolding conditions. The cases used in this study were selected from the domain of nodular and diffuse dermatitides. Both groups worked with a version of SlideTutor that provided immediate feedback on their actions for 2 h before proceeding to solve cases in either the Considering Alternatives or Playback condition. No immediate feedback was provided on actions performed by participants in the scaffolding mode. Measurements included learning gains (pre-test and post-test), as well as metacognitive performance, including Goodman–Kruskal Gamma correlation, bias, and discrimination. Results showed that participants in both conditions improved significantly in terms of their diagnostic scores from pre-test to post-test. More importantly, participants in the Considering Alternatives condition outperformed those in the Playback condition in the accuracy of their confidence judgments and the discrimination of the correctness of their assertions while solving cases. The results suggested that presenting participants with their diagnostic decision paths and highlighting correct and incorrect paths helps them to become more metacognitively accurate in their confidence judgments. 相似文献
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Liane B. Azevedo Mike I. Lambert Paulo S. Zogaib Turibio L. Barros Neto 《Journal of sports sciences》2013,31(4):407-414
Abstract The aim of the study was to compare physiological responses between runners adapted and not adapted to deep water running at maximal intensity and the intensity equivalent to the ventilatory threshold. Seventeen runners, either adapted (n = 10) or not adapted (n = 7) to deep water running, participated in the study. Participants in both groups undertook a maximal treadmill running and deep water running graded exercise test in which cardiorespiratory variables were measured. Interactions between adaptation (adapted vs. non-adapted) and condition (treadmill running vs. deep water running) were analysed. The main effects of adaptation and condition were also analysed in isolation. Runners adapted to deep water running experienced less of a reduction in maximum oxygen consumption ([Vdot]O2max) in deep water running compared with treadmill running than runners not adapted to deep water running. Maximal oxygen consumption, maximal heart rate, maximal ventilation, [Vdot]O2 at the ventilatory threshold, heart rate at the ventilatory threshold, and ventilation at the ventilatory threshold were significantly higher during treadmill than deep water running. Therefore, we conclude that adaptation to deep water running reduces the difference in [Vdot]O2max between the two modalities, possibly due to an increase in muscle recruitment. The results of this study support previous findings of a lower maximal and submaximal physiological response on deep water running for most of the measured parameters. 相似文献
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Rochelle Rocha Costa Carmen Pilla Adriana Cristine Koch Buttelli Michelle Flores Barreto Priscila Azevedo Vieiro Cristine Lima Alberton 《Research quarterly for exercise and sport》2018,89(2):173-182
Purpose: This study aimed to investigate the effects of water-based aerobic training on the lipid profile and lipoprotein lipase (LPL) levels in premenopausal women with dyslipidemia. Method: Forty women were randomly assigned to: aquatic training (WA; n = 20) or a control group (CG; n = 20). The WA group underwent 12 weeks of water-based interval aerobic training twice a week at intensities ranging from 9 to 15 on the Borg Scale of Perceived Exertion. Total cholesterol (TC), triglycerides (TG), high- (HDL) and low- (LDL) density lipoprotein, TC/HDL ratio, LPL levels, and peak oxygen consumption (VO2peak) were evaluated before and after 12 weeks in both groups. Results: The WA group elicited decreases in TC (9%; effect size [ES] = 0.69; 95% CI [0.05, 1.33]), LDL (16%; ES = 0.78; 95% CI [0.13, 1.42]), and the TC/HDL ratio (17%; ES = 1.13; 95% CI [0.46, 1.79]), as well as increases in VO2peak (10%; ES = 0.64; 95% CI [0.002, 1.27]) and HDL (10%; ES = 0.28; 95% CI [?0.35. 0.90]), without significant changes in TG (ES = 0.16; 95% CI [?0.46, 1.79]) and LPL (ES = 0.36; 95% CI [?0.27, 0.98]) levels. In the CG, no statistically significant changes in any of these variables were found (TC, ES = 0.19, 95% CI [?0.43, 0.82]; LDL, ES = 0.22, 95% CI [?0.40, 0.85]; HDL, ES = 0.05, 95% CI [?0.57, 0.67]; TG, ES = 0.09, 95% CI [?0.53, 0.71]; TC/HDL ratio, ES = 0.20, 95% CI [?0.42, 0.82]; LPL, ES = 0.02, 95% CI [?0.60, 0.64]; VO2peak, ES = 0.20, 95% CI [?0.42, 0.82]). Conclusion: Water-based interval aerobic training positively affected the lipid profile in premenopausal dyslipidemic women. 相似文献
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Roger Azevedo 《教育心理学家》2015,50(1):84-94
Engagement is one of the most widely misused and overgeneralized constructs found in the educational, learning, instructional, and psychological sciences. The articles in this special issue represent a wide range of traditions and highlight several key conceptual, theoretical, methodological, and analytical issues related to defining and measuring engagement. All the approaches exemplified by the contributors show different ways of conceptualizing and measuring engagement and demonstrate the strengths and weaknesses of each method to significantly augment our current understanding of engagement. Despite the numerous issues raised by the authors of this special issue and in my commentary, I argue that focusing on process data will lead to advances in models, theory, methods, analytical techniques, and ultimately instructional recommendations for learning contexts that effectively engage students. 相似文献
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BackgroundPhysical activity (PA) in the early years is associated with a range of positive health outcomes. Fundamental motor skill (FMS) competence is associated with PA and is theorized to be driven by PA in the early years and vice versa in mid to late childhood. However, to date, no studies have meta-analyzed the association between PA and FMS in the early years.MethodsSix electronic databases were searched for articles published up to April 2019. Cross-sectional and longitudinal studies were included if they targeted children (ages 3–6 year) as the population of the study and assessed the association between objectively measured PA and FMS. Total FMS, total physical activity (TPA), and moderate-to-vigorous physical activity (MVPA) data were meta-analyzed using a random effects model.ResultsWe identified 24,815 titles and abstracts. In total, 19 studies met the inclusion criteria, including 14 cross-sectional and 4 longitudinal studies, as well as 1 study with cross-sectional and longitudinal analysis. There was a significant but small positive association between FMS and MVPA (r = 0.20, 95% confidence interval (CI): 0.13–0.26) and TPA (r = 0.20, 95%CI: 0.12–0.28). Findings from longitudinal studies revealed that PA drives FMS in early childhood. Mediation was explored in 1 study, which found that perceived motor competence did not mediate the association between FMS and PA.ConclusionUsing a meta-analysis, this study is the first to show a positive association between FMS, MVPA, and TPA in the early years of childhood, suggesting that the association begins at an early age. Limited evidence from longitudinal studies supports the theory that PA drives FMS in the early years of childhood. More evidence is needed from large studies to track PA and FMS until mid to late childhood and to explore the mediators of this association. 相似文献
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Andrew Emerson Elizabeth B. Cloude Roger Azevedo James Lester 《British journal of educational technology : journal of the Council for Educational Technology》2020,51(5):1505-1526
A distinctive feature of game-based learning environments is their capacity to create learning experiences that are both effective and engaging. Recent advances in sensor-based technologies such as facial expression analysis and gaze tracking have introduced the opportunity to leverage multimodal data streams for learning analytics. Learning analytics informed by multimodal data captured during students’ interactions with game-based learning environments hold significant promise for developing a deeper understanding of game-based learning, designing game-based learning environments to detect maladaptive behaviors and informing adaptive scaffolding to support individualized learning. This paper introduces a multimodal learning analytics approach that incorporates student gameplay, eye tracking and facial expression data to predict student posttest performance and interest after interacting with a game-based learning environment, Crystal Island . We investigated the degree to which separate and combined modalities (ie, gameplay, facial expressions of emotions and eye gaze) captured from students (n = 65) were predictive of student posttest performance and interest after interacting with Crystal Island . Results indicate that when predicting student posttest performance and interest, models utilizing multimodal data either perform equally well or outperform models utilizing unimodal data. We discuss the synergistic effects of combining modalities for predicting both student interest and posttest performance. The findings suggest that multimodal learning analytics can accurately predict students’ posttest performance and interest during game-based learning and hold significant potential for guiding real-time adaptive scaffolding. 相似文献
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目的：观察备战2014亚运会期间,国家女子水球队身体成分、专项身体素质和战术训练动作强度分布特征与能量摄入的关系。方法：除守门
员外,备战2014亚运会中国国家女子水球队24名队员,（22±4）岁,（23.0±2.3）kg/m2,按水球战术训练角色分为中锋（n=6）、防中锋（n=10）和外线（n=
8）3组,进行连续6天的膳食调查,同时采集该周全部战术训练动作强度分布数据,专项游泳成绩和身体成分于膳食调查前一周测量。结果：（1）外
线运动员身高、体重和去脂体重显著低于中锋和防中锋,体脂%无组间差异;（2）防中锋运动员10×200 m泳速显著慢于外线,中锋运动员10×50 m泳
速显著快于防中锋;（3）战术训练中,外线运动员低强度动作持续时间和训练时间比重显著高于中锋和防中锋,中、高强度对抗时间显著低于中锋和
防中锋;（4）外线运动员的日能量摄入总量显著高于中锋;（5）受试队员体重、体脂重量、去脂重量、BMI 和体脂%与日能量摄入总量呈显著负相关,宏
量营养素摄入量与日能量摄入总量呈显著正相关,专项游泳成绩、低强度战术动作训练持续时间和训练时间比重与能量摄入总量呈显著正相关。
结论：战术训练不同强度动作分布特征而非身体成分和专项身体素质,是决定重大比赛备战期间国家女子水球队不同位置运动员能量摄入的重要
因素。 相似文献
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