High-intensity interval training programme for obese youth (HIP4YOUTH): A pilot feasibility study

Recently, there has been growing interest in high-intensity interval training (HIT) as a strategy to improve health. In this pilot study, we examined the feasibility of a 4-week low-volume HIT and its effects on cardiorespiratory fitness (CRF), blood pressure (BP) and enjoyment in overweight and obese youth. Twelve adolescents (body mass index (BMI): 34.8 ± 3.9 kg · m^?2, 14.9 ± 1.5 years) participated in 12 sessions of HIT (10 × 60 s cycling bouts eliciting ~90% maximal heart rate, interspersed with 90 s recovery, 30 min/session, 3 sessions/week) over ~4 weeks. All the participants completed the study and exercise attendance averaged 92%. Despite no changes in body weight and total fat, HIT resulted in significant (P < 0.01) increases in CRF (pre: 20.1 versus post: 22.2 ml · kg^?1 · min^?1) and exercise time (pre: 425 versus post: 509 s) during peak oxygen uptake test, and a reduction in resting systolic BP (pre: 115.8 versus post: 107.6 mmHg). The majority of study participants (83%) enjoyed HIT and more than half of the participants (58%) reported that HIT is a more enjoyable form of exercise compared to other types of exercises. Low-volume HIT is a useful strategy to promote exercise participation and improve cardiovascular health in overweight and obese youth.     

Quantification of the physiological loading of one week of "pre-season" and one week of "in-season" training in professional soccer players

The aim of this study was to quantify the physiological loads of programmed "pre-season" and "in-season" training in professional soccer players. Data for players during each period were included for analysis (pre-season, n = 12; in-season, n = 10). We monitored physiological loading of training by measuring heart rate and rating of perceived exertion (RPE). Training loads were calculated by multiplying RPE score by the duration of training sessions. Each session was sub-categorized as physical, technical/tactical, physical and technical/tactical training. Average physiological loads in pre-season (heart rate 124 ± 7 beats · min(-1); training load 4343 ± 329 Borg scale · min) were higher compared with in-season (heart rate 112 ± 7 beats · min(-1); training load 1703 ± 173 Borg scale · min) (P < 0.05) and there was a greater proportion of time spent in 80-100% maximum heart rate zones (18 ± 2 vs. 5 ± 2%; P < 0.05). Such differences appear attributable to the higher intensities in technical/tactical sessions during pre-season (pre-season: heart rate 137 ± 8 beats · min(-1); training load 321 ± 23 Borg scale · min; in-season: heart rate 114 ± 9 beats · min(-1); training load 174 ± 27 Borg scale · min; P < 0.05). These findings demonstrate that pre-season training is more intense than in-season training. Such data indicate that these adjustments in load are a direct attempt to deliver training to promote specific training adaptations.     

Control processing vs. information processing in models of reading

The purpose of this paper is to highlight some important ways in which standard information-processing models of language, and specifically of reading, are deficient. It is proposed that the standard models do not provide an adequate framework for dealing with a number of central issues in reading. Their deficiencies are considered under four headings, (1) theoretical rigour, (2) the interaction of different levels of information during reading, (3) the parallel nature of much of human information processing, and (4) reading comprehension. The source of the problems is considered to be the view of information as an inert encoding and of information processing as a series of these encodings. A distinction is made between models which emphasize a flow of information and models which emphasize a flow of control. Production systems are proposed as examples of the latter type of model. Their use is seen as a qualitatively different approach to language processing which provides a solution to many of the problems inherent in the standard models.     

Is expertise a necessary precondition for creativity?: A case of four novice learning group facilitators

Many North American theorists conceptualize expertise as preceding creativity. The rationale is, that in order to be truly creative, one must master a field so remarkable contributions can be made. Therefore, in order to be truly creative one must be an expert in a structured and codified domain. This inquiry attempted to examine the relationship between expert thinking skills and creativity in an ill-defined domain, embedded in the community of practice of group facilitation whose goal was to support learning. Using an instrumental case study approach to explore a unique system embedded in a naturalistic context, the case was comprised of a team of four female novice group facilitators, functioning as teaching assistants for learning task groups of university students. Various sources were drawn upon in order to map this group as a coherent knowing system. Debriefing sessions and interviews were transcribed and coded using a category string method in order to retain a holistic sensibility to the analysis. The codes revealed that the system displayed characteristics of shared expertise and social creativity. The overall pattern of creative response closely followed those of expertise. The codes for expertise generally preceded those instances of creativity, suggesting that creativity does need to rely on expert thinking skills. However, this inquiry suggests expanding the notion of expertise, in that it need not be situated in a single person, but can emerge from a system of shared expertise.     

Investigating Gender Differences in Mathematics and Science: Results from the 2011 Trends in Mathematics and Science Survey

Research in Science Education - The underrepresentation of women in science, technology, engineering, and mathematics (STEM)-related fields remains a concern for educators and the scientific...