Energy expenditure and EPOC between water-based high-intensity interval training and moderate-intensity continuous training sessions in healthy women

The present study compared the energy expenditure (EE) during and after two water aerobics protocols, high-intensity interval training (HIIT) and moderate continuous training (CONT). A crossover randomized design was employed comprising 11 healthy young women. HIIT consisted of eight 20s bouts at 130% of the cadence associated with the maximal oxygen consumption (measured in the aquatic environment) with 10s passive rest. CONT corresponded to 30 min at a heart rate equivalent to 90–95% of the second ventilatory threshold. EE was measured during and 30 min before and after the protocols and excess post-exercise oxygen consumption (EPOC) was calculated. Total EE during session was higher in CONT (227.62 ± 31.69 kcal) compared to HIIT (39.91 ± 4.24 kcal), while EE per minute was greater in HIIT (9.98 ± 1.06 kcal) than in CONT (7.58 ± 1.07 kcal). Post-exercise EE (64.48 ± 3.50 vs. 63.65 ± 10.39 kcal) and EPOC (22.53 ± 4.98 vs.22.10 ± 8.00 kcal) were not different between HIIT and CONT, respectively. Additionally, oxygen uptake had already returned to baseline fifteen minutes post-exercise. These suggest that a water aerobics CONT session results in post-exercise EE and EPOC comparable to HIIT despite the latter supramaximal nature. Still, CONT results in higher total EE.     

Aerobic exercise training performed by parents reduces mice offspring adiposity

The present study aimed to determine the effects of physical training performed by parents on mice offspring adiposity. Male and female parents underwent an aerobic training protocol for 7 weeks. The trained and sedentary parents were allowed to mate and the resultant offspring divided in: S (Offspring from Sedentary Parents), T (Offspring from Trained Parents), ST (Offspring from Sedentary Father and Trained Mother) and TS (Offspring from Trained Father and Sedentary Mother). After weaning, offspring was euthanized, blood collected and samples of mesenteric and inguinal fat pads used to isolate adipocytes for morphologic and histological analyses. Lee index, mesenteric fat pad, sum of visceral fat and total fat weight of female T was reduced in comparison to the other groups (p < 0.05). Periepididymal and sum of visceral fat in male T group was also reduced when compared to the other groups (p < 0.05). The diameter of mesenteric and inguinal adipocytes of T group was smaller compared to all groups comparisons for both sexes (p < 0.05). In summary, exercise training performed by parents reduced visceral offspring adiposity, the diameter of subcutaneous adipocytes and improved metabolic parameters associated to metabolic syndrome.     

Energy Expenditure and Intensity of Active Video Games in Children and Adolescents

Purpose: This study aimed to compare the energy expenditure and intensity of active video games to that of treadmill walking in children and adolescents. Method: Seventy-two boys and girls (aged 8–13 years) were recruited from local public schools. Energy expenditure and heart rate were measured during rest, during 3-km/hr, 4-km/hr, and 5-km/hr walks, and during active games (Adventure, Boxing I, Boxing II, and Dance). During walking and active games, we also assessed physical activity using an accelerometer. Results: The energy expenditure of the active games Adventure, Boxing I, Boxing II, and Dance was similar to that of treadmill walking at 5 km/hr in boys and girls. Heart rate was significantly higher for the game Adventure compared with walking at 3 km/hr, 4 km/hr, and 5 km/hr and the game Dance in both genders. The heart rate of girls during the games Adventure and Dance was significantly higher compared with boys. There was a statistically significant difference (p < .05, with an effect size ranging from 0.40 to 3.54) in the counts·min^?1, measured through accelerometry, between activities. Conclusion: XBOX 360 Kinect games provide energy expenditure and physical activity of moderate intensity for both genders. The use of active video games can be an interesting alternative to increase physical activity levels.     

Use of astronomical literature—A report on usage patterns

In this paper we present a number of metrics for usage of the SAO/NASA Astrophysics Data System (ADS). Since the ADS is used by the entire astronomical community, these are indicative of how the astronomical literature is used. We will show how the use of the ADS has changed both quantitatively and qualitatively. We will also show that different types of users access the system in different ways. Finally, we show how use of the ADS has evolved over the years in various regions of the world.     

Investigating efficacy expectancy as criterion for comparison of teacher- versus student-regulated learning in higher education

In this study, we assessed the feasibility of a specific elaboration of the efficacy construct, distinguishing between personal and contextual aspects, as a criterion for comparing learning environments. The participants were 163 students from two student-regulated and two teacher-regulated programs in higher education. We measured students’ perceptions of autonomy and various aspects of perceptions of efficacy in common learning tasks. Using principal components analyses, we assessed the structure of all the relevant variables. Subsequently, analyses of variance were performed with regulation source, discipline and grade level as factors. All variables emerged as separate scales with high internal consistency. Students in student-regulated programs reported a higher level of organisational efficacy expectancy, implying that these students perceived better organisational conditions for supporting their task performance. It is concluded that the distinction between personal and contextual aspects of efficacy is a promising distinction. However, a more fine-grained conceptualisation of teacher and student regulation is needed.     

The complexities of supporting Asian international pre‐service teachers as they undertake practicum

Increasing numbers of Asian international students are choosing to undertake their tertiary studies in English‐speaking countries. For universities, international students are an important source of revenue. However, Asian international students face multiple challenges in adapting to a foreign culture, understanding the expectations of their role, and adjusting to language, communication and cultural differences. These challenges are manifested, in particular, during practicum or field experience. This paper investigated the concerns of twenty Asian pre‐service teachers before and after their practicum in Australian schools by drawing upon data from focus group interviews. Although language barriers and cultural differences were identified concerns before the practicum, concerns about their relationship with their supervising teachers and the limited time in which they had to learn also emerged after the practicum. Whilst the findings are limited to the present study, implications for supporting Asian international pre‐service teachers during practicum are discussed.     

Multivariate relationships among developmental age, global engagement, and observed child engagement

The purpose of this study was to explore patterns of relationships among developmental age, teacher ratings of global engagement, and observed engagement in the classroom setting. Sixty-two children (age 9.5 to 63.6 months) were observed during free play, structured activities, and mealtimes. All children were administered a developmental test to assess their developmental age. In addition, teachers completed a rating scale to assess children’s typical engagement profiles. Canonical correlation analysis revealed two uncorrelated patterns of relationships among the variables. Function I reflected the positive relationship between children’s developmental age and high levels of engagement, and the negative relationship with lower levels of engagement. Function II represented the bivariate relationship between high levels of engagement regardless of developmental age.     

Effects of a community initiative on the quality of child care

This study examined the effects of a broad-based community initiative (Smart Start) to improve the quality of child care for preschoolers. Data were collected in 1994 and 1996 from over 180 child care centers in 12 counties implementing the community initiative. The quality of child care, as measured by the Early Childhood Environment Rating Scale (ECERS; Harms & Clifford, 1980), was significantly higher in 1996 than 1994, both across the entire sample and across the subset of 91 centers observed in both years. The quality of child care in 1996 was significantly related to the number of local quality improvement activities in which the child care centers participated. This and additional evidence presented in the paper show that a comprehensive community initiative can improve child care quality if significant funds and activities are focused on the issue.