Maximal and submaximal physiological responses to adaptation to deep water running     

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]O_2max) 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]O_2max 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   

Modelling the dynamics of children’s gross motor coordination     

Ana Carolina Reyes  Raquel Chaves  Adam D G Baxter-Jones  Olga Vasconcelos  Lisa M Barnett  Go Tani 《Journal of sports sciences》2013,31(19):2243-2252

ABSTRACT

This study modelled children’s gross motor coordination, investigated sex-differences and identified the effects of fixed and dynamic correlates on motor coordination development. A total of 344 Portuguese children (170 girls), from 6 age cohorts (5 to 9 years of age), were followed consecutively for three years (age range 5 to 11 years) using a mixed-longitudinal cohort design. Birth weight, hand dominance and socioeconomic status (SES) were identified. Gross motor coordination, body mass index, physical fitness (PF) and physical activity (PA) were assessed annually. A sequence of multilevel hierarchical linear models were developed. Model 1 found that age, age², sex, sex-by-age and sex-by-age² were significant predictors (p < 0.05) of gross motor coordination. Boys outperformed girls from 6 years of age onwards. Model 2 found a cohort effect (p < 0.05). Model 3 found that right handers were more coordinated (p < 0.05). When the confounders of body mass index, PF and PA were added to the model (Model 4) it was found that boys and girls had parallel trajectories in their gross motor coordination development. In conclusion children with increasing body mass index were less coordinated, while those who were stronger and more agile had steeper trajectories of gross motor coordination with age.  相似文献   

Theoretical, conceptual, methodological, and instructional issues in research on metacognition and self-regulated learning: A discussion     

Roger Azevedo 《Metacognition and Learning》2009,4(1):87-95

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Water-Based Aerobic Training Successfully Improves Lipid Profile of Dyslipidemic Women: A Randomized Controlled Trial     

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   

Emotional intelligence profiles and learning strategies in secondary school students     

Cándido J. Inglés  María C. Martínez-Monteagudo  Maria C. Pérez Fuentes  José M. García-Fernández  María del Mar Molero  Raquel Suriá-Martinez 《教育心理学》2017,37(2):237-248

The aim of this study was to analyse the relationship among emotional intelligence (EI) and learning strategies, identifying different emotional intelligence profiles and determining possible statistically significant differences in learning strategies through the identified profiles. Thousand and seventy one Spaniards secondary school students aged 14–17 participated in the study, completing the Trait Meta-Mood Scale-24 (TMMS-24) and the Cuestionario de Estrategias de Aprendizaje [Learning Strategies Questionnaire] (LSQ). Cluster analysis identified four differentiated EI profiles: a group of adolescents with a low EI profile, a group with high scores in attention and low scores in repair, a high EI profile group, and a group of adolescents with predominance of low attention and high repair. The results also revealed statistically significant differences among the profiles in most of the learning strategies, in which students with high general EI and those with predominance of low attention and high repair use more learning strategies than the other groups, suggesting the importance of developing programmes of emotional skills to study in greater depth EI and its influence on students’ learning strategies.  相似文献   

Comparative analysis of academic grades in compulsory secondary education in Spain using statistical techniques     

Alejandro Veas  Raquel Gilar  Pablo Miñano  Juan Luis Castejón 《Educational studies》2017,43(5):533-548

The present study, based on the construct comparability approach, performs a comparative analysis of general points average for seven courses, using exploratory factor analysis (EFA) and the Partial Credit model (PCM) with a sample of 1398 student subjects (M = 12.5, SD = 0.67) from 8 schools in the province of Alicante (Spain). EFA confirmed a one-factor model which explains 74.44% of the variance. Cronbach’s alpha value for this factor was .94. The PCM supported the one-factor model, and an optimal fit was achieved in all of the courses. The analysis of differential item functioning showed no significant differences in any course. Equitable distribution was observed in the evolution of the difficulty indices along the measurement scale for each course. This type of analysis confirms the measurement of a single latent construct in the different topics analysed, despite addressing various theoretical and procedural contents.  相似文献   

Defining and Measuring Engagement and Learning in Science: Conceptual,Theoretical, Methodological,and Analytical Issues     

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   

Test-enhanced learning in third-grade children     

Antonio Jaeger  Raquel Eloísa Eisenkraemer  Lilian Milnitsky Stein 《教育心理学》2015,35(4):513-521

Several recent studies have shown that retrieval is more efficient than restudy in enhancing the long-term retention of memories. However, studies investigating this effect in children are still rare. Here, we report an experiment in which third-grade children initially read a brief encyclopaedic text twice and then either performed a cued recall test on selected target contents of the text or reread the same text twice. A final four-choice memory test about the text’s contents was administered to all children after seven days as well as tests measuring their IQ and reading skills. In the final four-choice memory test, children who took the initial cued recall test showed significantly greater performance in comparison with children who restudied the text twice (their responses were 87 and 53% correct, respectively). The results suggest that cued recall tests can elicit very robust testing effects in young children, even when complex, educationally relevant materials are used as stimuli.  相似文献   

Advances in scaffolding learning with hypertext and hypermedia: theoretical,empirical, and design issues     

Michael J. Jacobson  Roger Azevedo 《Educational technology research and development : ETR & D》2008,56(1):1-3

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Association between fundamental motor skills and physical activity in the early years: A systematic review and meta-analysis     

Dan Jones  Alison Innerd  Emma L. Giles  Liane B. Azevedo 《运动与健康科学(英文)》2020,9(6):542-552

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