Anthropometric, physiological, performance, and nutritional profile of the Brazil National Canoe Polo Team

The purpose of this study was to determine the physiological, anthropometric, performance, and nutritional characteristics of the Brazil Canoe Polo National Team. Ten male canoe polo athletes (age 26.7 ± 4.1 years) performed a battery of tests including assessments of anthropometric parameters, upper-body anaerobic power (Wingate), muscular strength, aerobic power, and nutritional profile. In addition, we characterized heart rate and plasma lactate responses and the temporal pattern of the effort/recovery during a simulated canoe polo match. The main results are as follows: body fat, 12.3 ± 4.0%; upper-body peak and mean power, 6.8 ± 0.5 and 4.7 ± 0.4 W · kg(-1), respectively; 1-RM bench press, 99.1 ± 11.7 kg; peak oxygen uptake, 44.3 ± 5.8 mL · kg(-1) · min(-1); total energy intake, 42.8 ± 8.6 kcal · kg(-1); protein, carbohydrate, and fat intakes, 1.9 ± 0.1, 5.0 ± 1.5, and 1.7 ± 0.4 g · kg(-1), respectively; mean heart rate, 146 ± 11 beats · min(-1); plasma lactate, 5.7 ± 3.8 mmol · L(-1) at half-time and 4.6 ± 2.2 mmol · L(-1) at the end of the match; effort time (relative to total match time), 93.1 ± 3.0%; number of sprints, 9.6 ± 4.4. The results of this study will assist coaches, trainers, and nutritionists in developing more adequate training programmes and dietary interventions for canoe polo athletes.     

Perceived neighborhood environmental characteristics and different types of physical activity among Brazilian adolescents

Little is known about the association between environmental characteristics and types of physical activity in adolescents in a Latin American context. The aim of this study was to examine the association between perceived neighborhood environmental characteristics and different types of physical activity in 2,874 adolescents from Joao Pessoa, Paraiba State, Northeastern Brazil. The types of activity measured by questionnaire (≥10 min/day) included sports, physical exercises, active commuting and recreational activities. Neighborhood characteristics were measured by a 15-item scale. Multilevel analyses showed that adolescents who reported “having places they liked to go to” (OR = 1.41; 95%CI: 1.10–1.79) and “places with opportunities to practice” (OR = 1.29; 95%CI: 1.01–1.65) were more likely to play sports. “Seeing interesting things while walking” (OR = 1.24; 95%CI: 1.01–1.53) and “Seeing other adolescents engaged in physical activity” (OR = 1.47; 95%CI: 1,05–2,06) were associated with exercises. “Seeing other adolescents engaged in physical activity” (OR = 1.47; 95%CI: 1.18–1.82), “the neighborhood is not violent” (OR = 1.29; 95%CI: 1.04–1.60) and “having places they like to go to” (OR = 1.59; 95%CI: 1.13–2.25) were positively associated and “places with opportunities to practice” (OR = 0.79; 95%CI: 0.63–0.98) inversely related to active commuting. “Seeing other adolescents engaged in physical activities” (OR = 1.31; 95%CI: 1.05–1.63) and “seeing interesting things while walking” (OR = 1.26; 95%CI: 1.02–1.56) were associated with recreational activities. Neighborhood environmental characteristics associated with the physical activity vary with the type of practices adopted by adolescents.     

Questionnaire on Perceived Competency-based Learning for primary school students (#ICOMpri1) / Cuestionario del Aprendizaje Percibido basado en Competencias para el Alumnado de Educación Primaria (#ICOMPri1)

The purpose of this study was to design and validate an assessment tool to find out how primary school students perceive their competency-based learning. By examining the content validity (n = 35 experts), comprehension (n = 173 students) and construct (n = 523 students) of the instrument, the results showed correct psychometric quality, internal consistency, reliability and adequacy of the structural model: χ²/df = 2.08, TLI = 0.88, CFI = 0.90, GFI = 0.90, RMSEA = 0.04, and SRMR = 0.04. The final version of the Questionnaire on Perceived Competency-based Learning of primary school students (#ICOMpri1) includes eight dimensions and 27 items. The results showed a high perceived competency-based learning of primary school students. This is therefore a valid and reliable instrument that provides a more subjective and real vision of primary students’ academic performance. Nevertheless, future studies should analyse the criterion-related validity by comparing perception results with those of international academic achievement.     

Parental educational aspirations and children’s academic self-concept: Disentangling state and trait components on their dynamic interplay

The dynamic interplay of parental educational aspirations and children's academic self-concept was examined from late childhood through mid-adolescence within a transactional socialization framework. Parental and child data were gained from a representative Swiss sample within 3-year intervals (N_T1 = 1118; 51% females; 28% migration background; M_{age T1} = 9.26, M_{age T2} = 12.14, M_{age T3} = 15.32). Results from a random intercept cross-lagged panel model revealed positive associations between the two constructs at the between- and within-person level. Findings showed general and time-specific associations between children and parents and reciprocal spill-over effects, whereby higher than usual aspirations predicted higher than usual academic self-concept over time and vice versa, highlighting transactional processes in the context of educational transitions.     

Barriers and Enablers to Data‐Driven Decision Making by High School Counselors and Advisors

This article presents a study that had as its purpose to assist a large urban school district's leadership in systematically supporting school counselors and advisors conducting data‐driven decision making. Binder's Six Boxes® model served as the conceptual framework to collect and analyze information pertaining to barriers and enablers across environmental and behavioral factors. Barriers included lack of clear expectations and feedback, an overabundance of technology without time to practice, and clerical duties. Enablers included supportive leadership, knowledgeable counselors willing to participate, and leadership with positive perceptions.     

Indexical Expressions in Word Problems and their Influence on Multiple Referents of the Unknown

When translating word problems into equations, a common error consists of using the same letter to refer to two different quantities. This error, called multiple referents for the unknown, can be connected to the existence of deictic or indexical expressions within the problem statement. This paper aims to analyse the influence of indexical expressions on the incidence of the multiple referents for the unknown error. Results from a quantitative study with 117 Spanish secondary students show a significantly higher number of such type of error when the problem statement contains indexical expressions. The analysis of students’ performances in subsequent interviews indicates that this error may be due to the fragmented reading of statements.     

Reflexiones sobre los niveles y agentes del diseño del curriculum

Resumen

Este artículo explora un tema actual del diseño del curriculum. Después de hacer una definición de términos sobre el tema, se expone una propuesta sobre los distintos niveles de concreción del diseño del curriculum.     

Cognitive,Motivational, and Volitional Dimensions of Learning: An Empirical Test of a Hypothetical Model

The principal aim of this research is to contrast empirically a hypothetical model developed on the basis of the fundamental assumptions of current self-regulated learning models. In line with evaluation criteria of model fit, a high rate of congruence between the hypothesized theoretical model and the empirical data was observed. Analysis of the effects between the variables of the model revealed the following relevant aspects: students' predisposition to feel responsible for the results of their academic behavior (internal attribution) is related to positive self-image (academic self-concept), both being important conditions for development of learning-oriented motivation (learning goals). All of this involves selection and use of learning strategies for deep information processing (deep learning strategies), which leads students to assume responsibility with high levels of persistence, perseverance, and tenacity so as to achieve goals defined by the motivational orientation. This persistence and effort to achieve the proposed goals has in turn a positive and significant effect on academic achievement.