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The objective of the present study was to investigate the effects of combined training without caloric restriction on inflammatory markers in overweight girls. Thirty-three girls (13–17 years) were assigned into overweight training (n = 17) or overweight control (n = 16) groups. Additionally, a normal-weight group (n = 15) was used as control for the baseline values. The combined training programme consisted of six resistance exercises (three sets of 6–10 repetitions at 60–70% 1 RM) followed by 30 min of aerobic exercise (walking/running) at 50–80% VO2peak, performed in the same 60 min session, 3 days/weeks, for 12 weeks. Body composition, dietary intake, aerobic fitness (VO2peak), muscular strength (1 RM), glycaemia, insulinemia, lipid profile and inflammatory markers (C-reactive protein, interleukin-6, tumour necrosis factor-alpha, interleukin-10, leptin, resistin and adiponectin) were measured before and after intervention. There was a significant decrease in body fat (P < 0.01) and increase in fat-free mass (P < 0.01), VO2peak (P < 0.01), 1 RM for leg press (P < 0.01) and bench press (P < 0.01) in the overweight training group. Concomitantly, this group presented significant decreases in serum concentrations of C-reactive protein (P < 0.05) and leptin (P < 0.05), as well as in insulin resistance (P < 0.05) after the experimental period. In conclusion, 12 weeks of combined training without caloric restriction reduced inflammatory markers associated with obesity in overweight girls.  相似文献   
2.
High Intensity Interval Training (HIIT) can be performed with different effort to rest time-configurations, and this can largely influence training responses. The purpose of the study was to compare the acute physiological responses of two HIIT and one moderate intensity continuous training (MICT) protocol in young men. A randomised cross-over study with 10 men [age, 28.3?±?5.5years; weight, 77.3?±?9.3?kg; height, 1.8?±?0.1?m; peak oxygen consumption (VO2peak), 44?±?11?mL.kg?1.min?1]. Participants performed a cardiorespiratory test on a treadmill to assess VO2peak, velocity associated with VO2peak (vVO2peak), peak heart rate (HRpeak) and perceived exertion (RPE). Then participants performed three protocols equated by distance: Short HIIT (29 bouts of 30s at vVO2peak, interspersed by 30s of passive recovery, 29?min in total), Long HIIT (3 bouts of 4?min at 90% of vVO2peak, interspersed by 3?min of recovery at 60% of vVO2peak, 21?min in total) and MICT (21?min at 70% of vVO2peak). The protocols were performed in a randomised order with ≥48 h between them. VO2, HRpeak and RPE were compared. VO2peak in Long HIIT was significantly higher than Short HIIT and MICT (43?±?11 vs 32?±?8 and 37?±?8?mL.kg?1.min?1, respectively, P?P?P?2, HR and RPE than Short HIIT and MICT, suggesting a higher demand on the cardiorespiratory system. Short HIIT and MICT presented similar physiologic and perceptual responses, despite Short HIIT being performed at higher velocities.  相似文献   
3.
Abstract

The process of innovation-development to scaling is varied and complex. Various actors are involved in every stage of the process. In scaling the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)-led integrated watershed management projects in India and South Asia, three drivers were identified—islanding approach, multi-layered partnership, and innovative means of knowledge sharing. Through a consortium mode of partnership, ICRISAT established ‘islands’ or models for showcasing soil and water conservation interventions and integrated these with other concerns of the farming system (crops and livestock) and socio-economic dimension (capacity building). Activities on the islands were planned and implemented by the locals and replicated in satellite watersheds. Partnerships forged through the consortium approach provided a dearth of resources such as social capital. Projects built on trust and good relationships can be sustained even when direct financial support ceases. Innovative means of knowledge sharing like the Virtual Academy for the Semi-Arid Tropics (VASAT)—ICRISAT's innovation in capacity building and information management—provided the link between rural farm households and researchers. Credible intermediaries and markets were linked to farmers by information communication technology channels and markets through an interface of information and open/distance learning methods. VASAT's multi-dimensional strategy has been an important resource for a south–south partnership.  相似文献   
4.
This study aims to explore the pedagogical potential of outdoor play situations, considering the educational goals established in the Portuguese Pedagogical Guidelines for 0–3-year-old children (ongoing work), namely development of a sense of security and positive self-esteem; development of curiosity and exploratory impetus; and development of social and communication skills. Following a qualitative methodology, during a period of 9 months, the outdoor play experiences of 14 children from a day-care centre were observed and monitored and the professionals were interviewed. The data shows that outdoor experiences can contribute to the achievement of the educational goals, enlarging opportunities for creative play, problem solving, experimentation, inquiry, dialogues and collaboration. The achievement of the educational goals is facilitated through supportive and positive relationships with adults and peers, provision for proper equipment, and contact with nature. This study offers a deep insight into how educational policies can be put into practice in the outdoor area.  相似文献   
5.
Using data provided by graduates from 128 MBA programs, we examined the extent to which age, gender, and ethnicity predicted student perceptions of the MBA experience. We found that women and minorities were more likely to see program costs and the availability of financial support as significant factors in their program enrollment decisions than were Caucasian males. The most consistent predictor of students’ perceptions of their educational experience was whether the MBA program was full time or part time, with full‐time programs generally perceived more favorably. Our findings suggest that because diversity measures of age, gender, and ethnicity were not consistent predictors across the different perception areas, at minimum, MBA programs presently do not consistently inhibit diversity. However, given the increasing percentage of women and minorities that comprise the undergraduate population, maintaining the present path in program accessibility may create enrollment problems for MBA programs perhaps in the very near future. Therefore, we conclude with a discussion of the changing demographics in higher education and their potential implications for MBA programs and suggestions for how MBA programs might respond.  相似文献   
6.
Abstract

This study aimed to evaluate the autonomic modulation of heart rate in sedentary paraplegics and paraplegic wheelchair basketball players with thoracic spinal cord injury below T6. Seven paraplegic wheelchair basketball players (active paraplegic group), five paraplegics who were not involved in regular exercise (sedentary paraplegic group) and 10 able-bodied participants (control group) took part in the study. The heart rate variability was evaluated by linear (low frequency and high frequency band in normalised units and low frequency/high frequency ratio) and nonlinear methods (Shannon entropy, corrected conditional entropy, and symbolic analysis).

The sedentary group presented significantly higher values for low frequency, low frequency/high frequency ratio and symbolic index with no significant variations (0V%), and also lower values for the high frequency and symbolic index with two significant unlike variation (2ULV%) compared to active paraplegic group. Shannon entropy and corrected conditional entropy analyses revealed significantly lower values in the sedentary group than in the control or active paraplegic groups. Paraplegic individuals who regularly undertake physical exercise have higher complexity of R-R interval time series, lower sympathetic modulation, and higher parasympathetic modulation than sedentary paraplegic participants.  相似文献   
7.
This study addresses the learning of Information and Communication Technologies (ICT) concepts by physical education and sport science students through a computer game. Its aims are: (a) the design of the prototype of a computer game aimed at supporting the development of an appropriate mental model about how a computer works by the students, and (b) the evaluation of the impact of the use of this prototype on students as to appeal, basic usability issues and learning outcomes. The most significant elements of the game prototype (narrative, characters, interface, scenarios, puzzles, gameplay) are presented in connection with the constructivist learning principles that guided the game design. A hundred and three (103) physical education and sport science students participated in the evaluation of the game prototype, which was conducted through pretest and posttest written questionnaires that elicited both quantitative and qualitative data. The data analysis showed that the game prototype was well-accepted as an alternative learning tool for ICT, compared to traditional learning tools, and that most game elements elicited average to positive responses from the students. It was also found that the game prototype had a significant positive effect on students’ knowledge regarding the concepts of input, program, output and their interplay, and that it helped certain students overcome their misconceptions and form more scientifically acceptable and elaborate mental conceptions about basic functions of a computer. Future improvements and extensions to the game as well as future research perspectives are discussed on the basis of the findings.  相似文献   
8.
Previous studies of author productivity in business and management education (BME) research have focused on single disciplinary areas, and even single journals. This study is the first to examine the productivity of BME scholars across multiple disciplinary areas (i.e., accounting, economics, finance, information systems, management, marketing, and operations/supply chain management). We analyzed a pool of 17 BME journals with the highest hg‐index, by including the top three journals in the accounting and information systems areas, the top two journals in each of the other disciplinary areas, and an interdisciplinary BME journal. This examination covered a 10‐year period (2005‐2014), 4,464 articles and 9,617 article co‐authors. We identified 7,209 unique authors in this pool and ranked their productivity to create a “Key Authors” list. Each of the top 99 authors had five or more articles in our database. Our findings indicate the potential for cross‐disciplinary dissemination of research ideas and opportunities for scholars to enhance their research profile, because even a small increase in productivity can lead to substantial movement in the BME rankings of authors.  相似文献   
9.
The objectives were to describe the stated motives of participants who enrolled in a program at the Open University for the Elderly (UnATI, in Portuguese), identify correlations between the stated motives and sociodemographic data, and find a set of predictors related to the listed motives. A total of 306 middle-aged and elderly adults aged 50 or older were surveyed through a sociodemographic questionnaire and a five-item scale to check their motives to enroll in the program. The following motivational factors were identified, in order of importance: enhancing general knowledge, investing in personal development, increasing social interaction, learning more in order to help others, and employing one's free time profitably. Age and years of schooling combined were strong predictors of participants seeking new knowledge. Being single and not retired was correlated with the motive Investing in Personal Development. Having attended elementary school only and being married was closely correlated to the motive Increasing Social Interaction. Employing One's Free Time Profitably was associated with single or widowed individuals with family income between 3.1 and 4.0 times the minimum wage. As for Learning More in Order to Help Others, no predictors were found for this motive. It was found that participants seek to satisfy a desire to learn/ know more, to be up-to-date, to exercise their rights as citizens, and to play an active role in society. Our data suggest that these are the assumptions that drive middle-aged and elderly adults to look for various types of educational programs.  相似文献   
10.
How do students think about algebra? Here we consider a theoretical framework which builds from natural human functioning in terms of embodiment – perceiving the world, acting on it and reflecting on the effect of the actions – to shift to the use of symbolism to solve linear equations. In the main, the students involved in this study do not encapsulate algebraic expressions from process to object, they do not solve ‘evaluation equations’ such as \( 3x + 2 = 8 \) by ‘undoing’ the operations on the left, they do not find such equations easier to solve than \( 3x - 1 = 3 + x \) , and they do not use general principles of ‘do the same thing to both sides.’ Instead they build their own ways of working based on the embodied actions they perform on the symbols, mentally picking them up and moving them around, with the added ‘magic’ of rules such as ‘change sides, change signs.’ We consider the need for a theoretical framework that includes both embodiment and process-object encapsulation of symbolism and the need for communication of theoretical insights to address the practical problems of teachers and students.  相似文献   
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