Resumo em Inglês:

Abstract Developmental Coordination Disorder (DCD) is a neurodevelopmental condition marked by impairments in the development of motor coordination. The uncoordinated movements of children with DCD lead to performance difficulties in daily life activities and academic settings. Despite the high prevalence of this condition (2-7%) and severe consequences associated with it, DCD is not well recognized in clinical and educational practices, particularly in Brazil. This review provides an overview of DCD and the research evidence - we present definitions and characteristics associated with the condition, the diagnostic criteria, associated difficulties, frequent co-morbidities and a summary of the possible causes. Finally, we review management strategies and intervention approaches for DCD. We also discuss some of the common challenges of the field - while DCD has been largely studied in the last decade, there are still many gaps between research and practice that need to be filled. Awareness and dissemination of relevant, scientific information is necessary. In conclusion, DCD is a significant condition with a clear diagnostic criteria, and requires intervention to improve motor and functional skills, which can improve the associated difficulties as well as the physical and mental health consequences of the condition.

Resumo em Inglês:

Abstract Aim: To determine how EMG, anthropometric, and psychological factors, and physical activity levels affect isokinetic peak torque performance (IPT) of multiple set exercise sessions. Methods: 20 participants (27±7 years old), classified as active (A=10) and inactive (I=10), performed 10x10:40secs of maximal unilateral knee flexions and extensions at 120o.s-1. The IPT, EMG, glucose, LDH, and lactate concentrations and perceptions of pain, effort, recovery. Results: Active volunteers showed higher muscularity (52±5 vs 47±4 cm; p<0.05), PTI (262±4 vs 185±4 Nm; p<0.05), relative lower drop in performance (14±2 vs 27±3% ; p<0.05), major MDF (83±1 vs 76±1 Hz; p<0.05), lower log -Fins5 (-12.9±0.3 vs -12.7 ± 0.3 Hz; p<0.05), smaller subjective perception of effort (14.8±0.3 vs 17.0±0.3) and higher subjective perception of recovery (14.2±0.2 vs 12.3±0.3). There was a significant interaction between relative fatigue and the number of sets (F=6.18; p<0.001). Stepwise multiple regressions revealed that subjective perception of recovery best explained the fatigue level generated in the active volunteers [fatigue level= 85.084-5255(SPR)] while for body mass was the best determinant for the inactive group [fatigue level = -21.560 +1.828(BMI)]. Conclusion: Data from the present analysis suggest that physically active individuals show higher torque development and a smaller fatigability index when compared to inactive individuals. Among the fatigue models studied, it is possible that alterations in biochemical components, psychophysiological and EMG are not sensitive to the direct influence of the fatigue dynamics protocol, both in active or inactive individuals.

Resumo em Inglês:

Abstract Aim: The paper aims to analyse the educational purposes of Physical Education (PE) present in the national documents and programmes created in Brazil and Portugal that are geared towards its teaching in elementary schools. Methods: Since the research is of a theoretical-conceptual, documentary type character, content analysis was used to identify the category matrices of the sources analysed. Results: The results suggest approaches and specific features in skills development which are analysed and discussed based on the scientific production of the area’s academic-professional field. The predominance of operational competencies is limited towards practicing PE activities, which is consistent with the pedagogical theory of competency formation. Conclusion: This concept maintains that tacit knowledge and sensory experiences are essential for performance. However, the implementation of cognitive and affective competencies are important tools for performance, particularly with adolescent students.

Resumo em Inglês:

Abstract Aim: The aim of the study was to analyze the impact of a based-team sports physical education class on inhibitory control of elementary school children. Methods: Were selected 29 elementary school students (13 boys and 16 girls; 10.7 ± 0.7 years old; 43.2 ± 8.2 kg weight; 147 ± 5 cm height). Participants were submitted to a 50-minute sports-based physical education class performed at moderate intensity. Inhibitory control was measured before and immediately after the end of the physical education class by the Stroop Test. Results: Results indicate that the variables derived from Stroop Test performance overall reaction time were significantly reduced after the physical education class (p < 0.05). Conclusion: These results suggest that a 50-minute sports-based physical education class performed at moderate intensity elicited a significant improvement on the inhibitory control elementary school students.

Resumo em Inglês:

Abstract Aim: We aim to develop this study with the main objective to discuss perceptions about body and aging from the context of the ‘Our Healthier City’ project. Method: We use the phenomenological method to develop the research. Through a strategy of the situated phenomenon, we visit the place where it is experienced. We observed the lived world of the people there and interviewed 10 project participants. Results: In this way, we perceive that the aging body is ruled by taboos and prejudices, but develops every day, weaving meanings from movement, work, family, experiences, pleasures, and displeasures, caring for oneself by the understanding that life continues after old age and that death is an irreversible phenomenon. We also understand that it is a part of the body that ages fall, wrinkles, declines as a natural process but that cannot be considered just this, meaning that the body that grows older also develops in a polysemic cultural context with different meanings since old age is understood and lived in different ways by each one. Conclusion: We identify that the area of Physical Education has an academic production in the area of aging and old age that still need to be discussed in order to broaden the eyes for these bodies, so that they can not only be understood in their physiological and their effective responses to exercise, adaptation to physical activity and the types of training programs but also as beings that produce meanings from their experiences.

Resumo em Inglês:

Abstract Aim: The present study aimed to analyze the effects of N-acetylcysteine supplementation associated with concurrent training on the bone mineral density of spontaneously hypertensive elderly rats. Methods: For the present study, 28 male spontaneously hypertensive rats, six months old, were distributed in the following groups: control (C, n=7); control + N-acetylcysteine (CNAC, n=7); concurrent training (T, n=7); and concurrent training+N-acetylcysteine (TNAC, n=7). The concurrent training was composed of aerobic training on a treadmill and resistance training in the same training session, three times a week. Animals of the NAC groups received a dose equivalent to 120 mg/kg/day orally for eight weeks. The animals in the trained groups underwent training for eight weeks. The animals were evaluated at the beginning and end of the experiment. After euthanasia, the tibias and femurs were submitted to bone densitometry analysis in an X-ray dual emission device. Results: Lower weight variation was observed in the trained animals and a reduction in pressure values in all groups, but without a statistical difference (p> 0.05). The animals in the T and TNAC groups presented a better performance in the physical tests (p <0.05). In relation to bone, the NAC groups demonstrated a decrease in femoral bone density when compared to groups C and T. Finally, all experimental groups demonstrated an increase in tibial bone density, but with no statistical difference (p>0.05). Conclusion: The animals in group T demonstrated better performance in the physical tests. In addition, the NAC caused a reduction in the bone mineral density of the femur.

Resumo em Inglês:

Abstract Aim: The purpose of this study was to test the psychometric proprieties of the Questionnaire of Attitudes towards Doping in Fitness (QAD-Fit), originally developed by Serpa and colleagues and adapted to Portuguese gym/fitness context. Methods: A cross-sectional survey utilizing a web self-administered questionnaire was used. The sample was composed of 453 gym/fitness center practitioners, aged between sixteen and seventy-nine years old (M = 35.64; SD = 13.08), enrolled in several gym activities. Results: The confirmatory factorial analysis provided support to the four-factor structure proposed. All factors displayed good internal consistency, convergent validity, and discriminant validity. The multi-group analysis revealed cross-validity and the model´s invariance. The correlation between QAD-Fit and the Doping-related Theory of Planned Behavior Measures (DRTPBM) revealed evidence of its concurrent validity. Conclusion: The findings of this research revealed that QAD-Fit is a psychometrically valid and reliable instrument to assess attitudes towards doping consumption in gym and fitness settings.

Resumo em Inglês:

Abstract Aim: The aim of this study was to identify the strategies adopted in a football club to support coaches’ development. Methods: Eight coaches and four technical coordinators from a Brazilian elite club participated. After transcribing data from semi-structured interviews with coaches and technical coordinators, they were analyzed using the QSR Nvivo 9.2 software. Results: Three support schemes and their respective pillars of action were identified: a) Mentoring and meeting - Assistance among coaches, discussions with coaching staff, and free theme meetings; b) Incentive for continuing education; c) Club Pillars - Club goals, continuity of coaches, evaluation of coaches. Conclusion: Data allowed us to identify the important contributions of this Club in continued ongoing coach development. Moreover, we may characterize the Club as an authentic learning organization due to the promotion of a safe work environment that stimulates coaches’ engagement in the Club’s organizational culture and enables adequate communication and the constant update through courses and meetings.

Resumo em Inglês:

Abstract Aim: We investigated the effect of high-protein (HI-PRO - 70% protein and 30% carbohydrate) and high-carbohydrate supplementation (HI-CHO - 70% carbohydrate and 30% protein) on muscle damage, haemoglobin, immune response, perceived pain and recovery post-simulated XCO. Methods: For this,10 amateur athletes (38±9.6 yrs.) were measured pre-, post- and 24-h post-trial. Results: In comparison to the pre-trial, the post-trial athletes presented leucocytosis (p≤0.001; 14.7±6.1 and 13.6±5.6 cells x103; for HI-PRO and HI-CHO, respectively) and neutropenia (p≤0.001; 11.9±5.2 and 10.7±4.9 cells x103; for HI-PRO and HI-CHO, respectively) but recovered at 24-h post-trial (Leukocytes: 6.9±1.4 and 7.1±1.4 cells x103; for HI-PRO and HI-CHO, respectively; neutrophils: 3.6±1.2 and 3.9±1.1 cells x103; for HI-PRO and HI-CHO, respectively) without a difference between conditions (p=0.808 and p=0.531; for leukocytes and neutrophils, respectively). A similar result was observed for perceived pain and recovery, where the condition did not interfere with these variables between the o measurement moments (p=0.245 and p=0.491; for pain and recovery respectively). There was an interaction effect for lactate dehydrogenase (LDH), where HI-PRO presented a lower serum concentration 24-h post-trial compared to HI-CHO (p=0.039; 181.3±21.9 and 201.0±10.4 IU/L; for HI-PRO and HI-CHO, respectively). Conclusion: HI-PRO supplementation results in better muscle damage recovery but only for LDH. Athletes should evaluate the cost-benefit of choosing the nutrients to be consumed immediately post-training or competition.

Resumo em Inglês:

Abstract Aim: To analyze success and failure of offensive sequences and the adopted offensive method in under-15 (U-15) and under-17 (U-17) soccer players. Methods: The sample was composed of 218 offensive sequences performed by U-15 and U-17 players selected from 28 matches, being 18 matches of an Italian team and 10 matches of a Brazilian team. All offensive sequences which ended in finalization were selected for the analysis. Using observational methodology, an adapted ad hoc observational instrument was built with the variables “number of players involved”, “ball touches”, “passing”, “duration”, and “corridor changes”. Next, offensive actions were classified into three offensive game methods: counter-attack, quick attack, and positional attack. Results: Results revealed that teams which use positional attack expend more time constructing an offensive play, involve extra players, and change the ball corridor more often during offensive actions when compared to counter-attack and quick attack (p<0.01). Moreover, offensive efficacy did not present an association with the offensive method employed (X2=0.47; p=0.78). Sequences that finished in success presented significantly higher values of the number of touches (p=0.02), passes (p=0.003), and duration (p=0.01) in comparison to failure. Conclusion: The findings suggest that all offensive methods adopted can be used to reach success during a game of U-15 and U-17 soccer players.

Resumo em Inglês:

Abstract Aim: The promulgation of the 1996 Education Guidelines and Bases Law promotes debate on the construction of National Curricular Parameters (NCPs) for Basic Education, emerging traditional disciplines and transversal themes. Considering the relevance of NCPs today, the objective of this research was to analyze NCPs related to health and to identify relationships between health and physical education in NCPs for Physical Education in Elementary and High School. Method: This is a documentary study that analyzed the respective documents. Paul Ricœur's hermeneutic approach was used for the interpretation of these documents. Discussion: In this section, it was identified that these documents recognize health as a right; present a dynamic conception of health and emphasize the importance of citizen education. However, the documents contradict each other by emphasizing a reduction of Physical Education to physical exercise, remodeling of habits, emphasized valorization of biological mechanisms, and contradictory facts to understand health dynamics. Conclusion: Finally, the conclusions emphasize the main points in each document, showing that there are advances but there are also divergences between them related to health issues and even setbacks. In addition, new investigations related to this theme are suggested.

Resumo em Inglês:

Abstract Aims: To investigate elite women sports career development can be a way to better understand how gender issues and specific women sport practice conditions have influenced athletes’ life and personal experiences, also subside reflections on policies and pedagogic intervention on the sport. The aims of this study were to investigate and describe the process of sports career development lived by Brazilian women elite futsal players, based on their own sport experiences and perspectives on futsal. Methods: Data of this qualitative study were produced by semi-structured retrospective interviews with 13 Brazilian elite women futsal players. Data gathering and data analysis were based on the Grounded Theory method. Results: This section is organized in four axes, with their main categories in parenthesis: 1.Diversified experiences in childhood and youth (enjoyment related to diversified sport practices); 2.Initiation on ‘kicking ball games’ practices (experiences with football and futsal informal practices and suffering of prejudice related to gender issues); 3.Systematic participation in futsal practices (experiences in systematic futsal practices within older age groups); 4.The investment on elite futsal career (moving from football to futsal career). Conclusion: Interviewed players had their first sports experiences on a variety of practices during sport initiation in childhood. The beginning on systematic practice of futsal occurred later than men athletes. The lack of competitions for young girls, and the fact that futsal and other ‘ball kicking games’ are considered as men preserve practices contributed to the late sport specialization process. The athletes’ career presented strong thresholds related to gender issues on futsal.

Resumo em Inglês:

Abstract Aim: To compare the effects of different physical activities on laterality and asymmetry values through the side bridge test. Methods: the assessments were carried out in 45 subjects between 18 and 30 years old, 15 Crossfit-trained individuals, 15 weight trained and 15 sedentary. The subjects performed the side bridge test on both sides. After checking the normality and homogeneity of the data, we selected the appropriate statistical analysis for the comparison of the variables, adopting a significance level of α <0.05. Results: there was no statistical difference in the balance ratio; however, significant difference was found in the side bridge test endurance time, in which the Crossfit group obtained longer times on both sides than the other two groups. The side bridge test is a test of simple execution and that in this study the Crossfit group presented better results in the endurance time in the side bridge test. Conclusion: the results of the ratio asymmetry and endurance time are not sufficient to evaluate the resistance of the core muscles but could be an evaluation tool, the side bridge test can be introduced in postural training programs.

Resumo em Inglês:

Abstract Aim: To investigate the effects of low-intensity walk training with and without blood flow restriction (BRF) on resting heart rate variability (HRV) and blood pressure (BP) in middle-aged men. Methods: Twenty-one men were randomly assigned into the walk training group with (BRF-W; n = 11) and without (NOR-W; n = 10) BFR. The resting HRV and blood pressure were assessed pre- and post-6 weeks of the intervention [3 times/week, 5 sets of 3-min walking (6 km.h-1) with 1-min of rest, totalizing 18 sessions of training]. The BFR-W group received the occlusive stimulus before of training sessions though of a standard sphygmomanometer and performed the training sessions with the vascular occlusion (80-100 mmHg) in both the legs. Results: Only BRF-W group improved HRV on time domain indices (SDNN and RMSSD; p < 0.05) after training but it was not found differences on frequency domain indices. In addition, systolic blood pressure (SBP) improved after training (PRE: 128.5 ± 5.9 vs POST: 119.1 ± 8.6 mmHg; Cohen’s d = -1.30; p < 0.01) only in BFR-W group. There was not a significant difference on diastolic blood pressure (DBP) after training, however, effect size was moderate for BFR-W (Cohen’s d = -0.56; p > 0.05). Conclusion: Our results showed that walking training with blood flow restriction can improve health cardiovascular parameters in middle-aged men.

Resumo em Inglês:

Abstract Aims: Investigated the relation between eating habits or physical activity and weekend television viewing time, regardless of weekday television viewing in Brazilian workers. Methods: A representative cross-sectional study was conducted to measure the relation between weekend television viewing time and dietary indicators and physical activity across different domains in 47,477 workers. A questionnaire measured the time spent watching television per day on the weekend, physical activity indicators across different domains and eating habits. Absolute and relative frequencies and multinomial logistic regression adjusted were used to describe and identify the relationship between time spent watching television on the weekend and physical activity indicators or eating habits. Results: Workers who were physically active in the household (OR=1.09 [95%CI=1.04; 1.15] and OR=1.11 [95%CI=1.06; 1.16]) and leisure-time domains (OR=1.28 [95%CI=1.22; 1.35] and OR=1.30 [95%CI=1.24; 1.36]) were more likely to watch television ≥ 2 and ≥ 4 hours on a weekend day, respectively, than those watching television ≤ 1 hour/day. Consuming sweets (OR=1.30 [95%CI=1.22; 1.39]) and soft drinks (OR=1.11 [95%CI=1.03; 1.19]) was related to television watching ≥ 4 hours on a weekend day. However, workers who consumed fruits (OR=0.81 [95%CI=0.76; 0.85]) and vegetables (OR=0.91 [95%CI=0.86; 0.96]) daily were less likely to spend ≥ 4 hours watching television on a weekend day. Conclusion: We conclude that increased television viewing time on weekends, regardless of weekday television time, is related to leisure-time and household physical activity and with unhealthy eating habits in workers. Interventions focusing on the leisure-time may be an important alternative for health promotion in workplaces.

Resumo em Inglês:

Abstract Aim: The aim of the present study was to evaluate the effect of an exercise session prescribed by the Sworkit® Personal Trainer application on hemodynamic and autonomic responses. Methods: The sample consisted of 11 men classified as sedentary according to IPAQ. The exercises were randomly selected by the app Sworkit® Personal Trainer, using the pre-built program "Light Warm-Up Cardio" (see supplementary material). Heart rate and perceived exertion data were collected every minute during an exercise session. Blood pressure and heart rate variability were measured Pre, Post, 30 min, 12h, 24 h, and 48h after exercise. Heart rate and rate of perceived exertion were collected during the 30 minutes exercise. Results: Hemodynamic responses showed differences in heart rate and systolic blood pressure: Post, 12 h and 24 h compared to Pre. We also found significant statistical differences in the heart rate variability indexes when comparing Post, 30min to 48h versus Pre, indicating modifications in the autonomic modulation post-exercise. The perceived exertions scale remained between 13-14 during the exercise. Heart rate was 149 ± 5.26 (80 ± 5% of HRmax) during the 30min exercise, indicating a moderate to vigorous intensity. Conclusion: We concluded that a single exercise session guided by the Sworkit® Personal Trainer application could generate autonomic changes in up to 12 hours, presenting a moderate to vigorous intensity in 30 minutes of exercise for sedentary men.

Resumo em Inglês:

Abstract Aim: Grounded on Self-Determination Theory, this study aimed to translate, adapt and validate the Perceived Environmental Supportiveness Scale (PESS) in a sample of Portuguese physical education students. Methods: The global sample was comprised of 964 students (518 females), divided in two groups: the calibration (n = 469) and the validation one (n = 483), all of them enrolled in two Physical Education (PE) classes/week. Results: The analysis provided support for a one factor and 12 items model, which are in line with the values adopted in the methodology (χ² = 196.123, df = 54, p = <.001, SRMR = .035, NNFI = .943, CFI = .954, RMSEA = .074, 90% CI .063-.085). Results express that the models are invariant in all analysis (i.e., calibration vs. validation, male vs. female, and 3rd vs. secondary cycle; three and single factor models). Conclusion: The present study suggests that the PESS with one factor and 12 items has good psychometric properties and can be used to assess perceived need supportive motivational environments provided by PE teachers. Additionally, invariance analysis showed support for the use of the scale in both genders and in the 3rd and secondary cycles.

Resumo em Inglês:

Abstract Aim: To assess the prevalence, quality of life (QoL), and the damages caused by PH, in the professional and personal scope of Physical Education academics with Primary Hyperhidrosis (PH). Methods: A descriptive, exploratory, qualitative and quantitative cross-sectional study was carried out. Twenty-five students from the physical education course at Tiradentes University, Aracaju-SE, were interviewed from August to November 2017. Validated questionnaires were used on PH’s influence in academic activities and QoL. absolute and relative frequencies in the case of categorical variables and measures of trend and central variability in the case of numerical variables. Results: The prevalence of PH in students of Physical Education was 11.11%, mainly in combined sites, such as palmoplantar, and with no difference between the sexes. The symptoms started mostly during childhood and adolescence. Most of the interviewees (92%) reported difficulties with activities such as sports, use of personal protective equipment, handling of work equipment and instruments, and exacerbation in stress situations. They reported significant harm to QoL in situations of greeting people with handshakes, writing, wearing socks and dancing socially. Conclusion: Although PH is a disease that negatively impacts the QoL, it is still little known in the academic world with little demand for medical help. Therefore, it is necessary greater dissemination of the disease for its early diagnosis, related to the intensity of the sweating for a better therapeutic approach.

Resumo em Inglês:

Abstract Aim: The present study aimed to construct and validate a questionnaire to identify which information could influence the decision-making process of the setters, according to the functional structure of the volleyball game. Method: The questionnaire had 55 questions, divided into four sections, and was answered by 16 volleyball coaches with an international career (32.8 ± 5.35 years). The analysis of the results consisted of: (1) descriptive analysis; (2) calculation of agreement between observers; (3) Mode calculation for importance scale; (4) Response index for classification of the information described; (5) Median and interquartile range for the evaluation of the questionnaire. Results: The results indicated that, environmental factors are involved in the decision-making process of the setters and that they influenced, in distinct ways, the decision-making of the setters during the Attack and Counterattack Processes in a volleyball match. Conclusion: Thus, according to the coaches’ analysis, the instrument was considered reliable and appropriate for the application and use.

Resumo em Inglês:

Abstract Aim: Sporting mega-event organization requires developing strategies to maximize the chance of success. For the Brazil 2014 Fifa World Cup, it was not different. The action started long before the opening match on 06/12/2014. The issue we seek to investigate is: How did the 2014 Fifa World Cup’s management as a sporting mega-event develop during the pre-event phase? The general objective was to identify and analyze management-related peculiarities of the 2014 Fifa World Cup’s management during the pre-event period. The operational objectives were: (i) To identify the organizational structure set up to manage the 2014 Fifa World Cup; (ii) reveal the candidacy process; (iii) find out the initial budgets/investments planned for the 2014 Fifa World Cup; (iv) examine the management difficulties that happened during the pre-event period; and (v) detect the legacy left by said phase. Method: primary data was collected through an elite interview conceded by ex-Minister of Sports Orlando Silva and secondary data was obtained through bibliographical and documental research techniques. The interview was evaluated through content analysis. The analysis and discussion were categorized as follows: organizational structure, candidacy process, management, and legacy. The results show legacy was obtained in the pre-event phase due to the knowledge generated during the candidacy process. They also show a strengthening of Brazil’s image as a mega-event organizer. Some difficulties include no integration between organizers, delay in defining host-cities and construction, no initial budgets and no transparency in the bid’s initial publishing.

Resumo em Inglês:

Abstract Aim: Resistance exercise (RE) is a widely accepted strategy to counteract the effects of aging and chronic diseases on health-related outcomes. Studies have been suggested that RE improves brain and cognitive health. RE with unstable devices (REI) is a neuromotor complexity strategy with the potential to improve strength, power, and balance in onder adults, however, their effects on neurocognitive function in individuals at risk of cognitive decline are poorly understood. Thus, we describe the REI study protocol, a randomized clinical trial design to assess the effects of 12-weeks of REI and RE on neurocognitive functions in older adults with subjective cognitive complaints. Methods: The sample will consist of individuals (aged 65 or older) with subjective cognitive complaints, who will be randomized in one of three experimental groups: control, RE or REI. Participants of the RE group will receive 12-weeks of progressive resistance training (seven exercises structured into 3 sets of 10-15 repetitions maximum, three times per week). Participants of the REI group will receive the same RE protocol performed on unstable devices that promote progressive instability. The control group received a health education program. The primary outcome is a composite score of neurocognitive functions. Secondary outcomes include each separately neurocognitive domain, functional performance, balance, falls-related parameters, cardiovascular and mood variables. The study results will provide information to design a future and larger preventive trial on populations at risk of cognitive decline and dementia, which is imperative in public health terms. Trial registration: Brazilian registry of clinical trials number RBR-4kqs22.