Influence of recovery intensity on time spent at maximal oxygen uptake during an intermittent session in young,endurance-trained athletes

Abstract

In this study, we examined the effects of three recovery intensities on time spent at a high percentage of maximal oxygen uptake (t90[Vdot]O_2max) during a short intermittent session. Eight endurance-trained male adolescents (16 ± 1 years) performed four field tests until exhaustion: a graded test to determine maximal oxygen uptake ([Vdot]O_2max; 57.4 ± 6.1 ml · min^?1 · kg^?1) and maximal aerobic velocity (17.9 ± 0.4 km · h^?1), and three intermittent exercises consisting of repeat 30-s runs at 105% of maximal aerobic velocity alternating with 30 s active recovery at 50% (IE₅₀), 67% (IE₆₇), and 84% (IE₈₄) of maximal aerobic velocity. In absolute values, mean t90[Vdot]O_2max was not significantly different between IE₅₀ and IE₆₇, but both values were significantly longer compared with IE₈₄. When expressed in relative values (as a percentage of time to exhaustion), mean t90[Vdot]O_2max was significantly higher during IE₆₇ than during IE₅₀. Our results show that both 50% and 67% of maximal aerobic velocity of active recovery induced extensive solicitation of the cardiorespiratory system. Our results suggest that the choice of recovery intensity depends on the exercise objective.     

Treating children's aggressive behavior problems using cognitive behavior therapy with virtual reality: A multicenter randomized controlled trial

This multicenter randomized controlled trial investigated whether interactive virtual reality enhanced effectiveness of Cognitive Behavioral Therapy (CBT) to reduce children's aggressive behavior problems. Boys with aggressive behavior problems (N = 115; M_age = 10.58, SD = 1.48; 95.7% born in Netherlands) were randomized into three groups: CBT with virtual reality, CBT with roleplays, or care-as-usual. Bayesian analyses showed that CBT with virtual reality more likely reduced aggressive behavior compared to care-as-usual for six of seven outcomes (ds 0.19–0.95), and compared to CBT with roleplays for four outcomes (ds 0.14–0.68). Moreover, compared to roleplays, virtual reality more likely enhanced children's emotional engagement, practice immersion, and treatment appreciation. Thus, virtual reality may be a promising tool to enhance CBT effectiveness for children with aggressive behavior problems.     

Daily fluctuations in young children’s persistence

Children's behavior changes from day to day, but the factors that contribute to its variability are understudied. We developed a novel repeated measures paradigm to study children's persistence by capitalizing on a task that children complete every day: toothbrushing (N = 81; 48% female; 36–47 months; 80% white, 14% Multiracial, 10% Hispanic, 2% Asian, 1% Black; 1195 observations collected between January 2019 and March 2020). Children brushed longer on days when their parents used more praise (d = .23) and less instruction (d = −.22). Sensitivity to mood, sleep, and parent stress varied across children, suggesting that identifying the factors that shape an individual child's persistence could lead to personalized interventions.     

Australian social work academics’ perceptions of their teaching roles within higher education

The marketisation of higher education (HE) has created a number of tensions and ideological dilemmas that may influence how academics see their roles and teaching practices. This paper explores how academics in the discipline of social work (who were also in leadership roles) perceive their roles and identities and manage the tensions and dilemmas that arise for them as teachers in the current HE environment. Unless the tensions and dilemmas are articulated, it is not possible to understand and manage their impact on academics. This may lead to the loss of quality learning experiences for students and lower workplace satisfaction. This paper addresses the research question: were there ideological dilemmas experienced by social work academics in the current environment and if so, what subject positions did they adopt in response to these? A discursive psychology approach was used to answer this question. Data showed a range of ideological dilemmas represented by each of the different subject positions adopted. The paper concludes with questions for readers to consider, generating ideas for transferring understanding of these ideological dilemmas into positive action within the workplace.     

记得我吗?

[abstract]提要28岁的LexiSmart醒来时,发现自己身处医院,修了完美的牙齿,恢复了健康的体魄。在一次车祸中幸存下来的Lexi忘掉了整整3年的记忆,而这本书就是讲述她如何找回记忆,以及迎接新生活的历程。下面选的这段是本书的第一段,以第一人称的身份描述了刚刚醒来的Lexi的心理活动。     

Deaf Students and Higher Education in the United Kingdom

Abstract

In the United Kingdom, 233 higher education institutions were surveyed in 1988 and 1989 providing 166 returns. The survey sought information on equal opportunities policies, provision of technical support, the availability of support personnel and interpreters, funding arrangements, and the numbers of deaf students within higher education (HE). With a few notable exceptions, the returns showed a generally poor level of services available to deaf students, an ignorance of the required support needs and a low representation of deaf people within HE. The need for positive action seemed to be least recognized within teacher training colleges. The study also highlighted the absence of any monitoring of deaf or disabled students within HE. Several suggestions are made on how policies and practices in institutions could be changed to widen access to this group of students.     

Trait self-esteem and claimed self-handicapping motives in sports situations

Abstract

We examined the relationship between physical self-esteem and claimed self-handicapping among athletes by taking motives into consideration. In Study 1, 99 athletes were asked to report their tendency to engage in claimed self-handicapping for self-protective and self-enhancement motives (trait measures). Low self-esteem athletes reported a higher tendency to engage in claimed self-handicapping for these two motives compared with high self-esteem athletes. Neither low nor high self-esteem athletes reported a preference for one motive over the other. In Study 2, 107 athletes participated in a test that was ostensibly designed to assess high physical abilities – and thus to encourage self-handicapping for self-enhancement motives (success-meaningful condition) – or to assess low physical abilities, and thus to encourage self-handicapping for self-protective motives (failure-meaningful condition). Before starting the test, athletes were given the opportunity to claim handicaps that could impair their performance. Low self-esteem athletes claimed more handicaps than high self-esteem athletes in both conditions. Findings suggest that low physical self-esteem athletes engage more in claimed handicapping regardless of motives, relative to high physical self-esteem athletes.     

Representations of student performance data in local education policy

Educational Assessment, Evaluation and Accountability - The use of data for governance purposes has been widely recognised as a way for national authorities to coordinate their activities across...     

Teachers' situation-specific mastery experiences: teacher,student group and lesson effects

Following a model on the cyclical nature of teacher (“trait”) self-efficacy and context-, task- and situation-specific (“state”) mastery experiences (TSSME), we investigated the variability and effects of lesson characteristics (e.g. lesson sequence), student group characteristics (e.g. proportion of students receiving free school meals) and teacher characteristics (e.g. teacher experience) on teachers' situation-specific mastery experience. Forty-three teachers reported on 1,055 lessons in 385 student groups using electronic questionnaires in Personal Digital Assistants during a period of 2 weeks. Two domains of TSSME (support of learning and organisation of classrooms) and perception of students (engagement and behaviour) were found. Multilevel models found roughly a quarter of the variance in TSSME between teachers, a quarter between student groups and half between lessons. Student group characteristics differentially predicted TSSME. Perceived student engagement was more predictive of TSSME than perceived student behaviour. More experienced and high-efficacy teachers had higher TSSME. The findings have implications for our understanding of teachers' everyday practice with different student groups.