Resumo em Inglês:

Abstract Aims: The present study aimed to assess the effect of a 24-week intervention on the physical activity level among adults at risk of developing type 2 diabetes mellitus (DM2). Methods: It was included 129 individuals of both sexes who underwent the Preventive Health Check-up at the Albert Einstein Israelita Hospital between January and August 2010 and who were at high and very high risk of developing DM2. The risk of developing DM2 was assessed according to the FINDRISC criteria. All participants were evaluated by the International Physical Activity Questioner (IPAQ). Subjects were followed-up for 24 weeks by a physical education professional through emails during a 6 month period. The IPAQ was sent by email after 3 and 6 months of follow-up. Statistical analysis was performed using the chi-square test with p<0.05 and the Yule Coefficient test. Results: At baseline of the follow-up period, 80.3% of individuals failed to comply with the recommended weekly physical activity. In the end, motivational intervention by e-mail encouraged 74.2% of individuals to comply with the weekly-recommended physical activity and only 1.5% were classified as sedentary. Conclusion: Therefore, the follow-up protocol conducted by periodic and personalized e-mails proved to be effective in promoting physical activity among people at risk of developing metabolic diseases.

Resumo em Inglês:

Abstract Aims: To compare the effect that two programs of physical exercise have over the memory of elderly people. Methods: This was an intervention study conducted with 79 seniors of both sexes. Individuals included in the study were randomly assigned into two groups: aerobic exercise (39 individuals) and neuromotor exercise (40 individuals). Interventions: The aerobic exercise program consisted of walking activities. The neuromotor exercise program included activities for muscle strength, flexibility, balance, and agility. A total of 36 sessions were conducted with each one lasting approximately 50 minutes, 3 days a week for a period of 12 weeks, for both groups. Main outcomes and measures: The intensity of activity was controlled by the Borg scale (12-16). We evaluated memory performance through a list of figures. Means of the tests for memory performance were compared through Repeated Measures (p ≤ 0.05). Results: After the intervention period, 44 individuals remained in the sample while 29 remained in the aerobic group and 15 in the neuromotor group. The average age of respondents was 68.81 ± 7.12 years. No significant differences were observed between groups when analyzing the interaction, time, and group according to memory tests. Significant improvements were identified after the intervention period in both groups for the variables nomination and incidental memory. Conclusion: Aerobic and neuromotor exercise programs led to an increase in the memory performance of the elderly in the functions appointment (short-term memory) and incidental memory (long-term memory).

Resumo em Inglês:

Abstract Aims: To analyze the prevalence of risky behaviors among physical education undergraduates; to determine prevalence of risk factors for non-communicable chronic diseases (NCCD) among university, and; to determine the association between healthy life habits and physical activity. Method: A cross-sectional study with 903 undergraduate Physical Education students. The study used a self-administered questionnaire on health-related life habits. All questions were obtained from the Surveillance of Risk and Protection Factors for Chronic Diseases through Telephone Interviews. Logistic regression was used to estimate odds ratios (OR) and 95% confidence intervals (95% CI). Results: Of the 903 students, 57.4% were women, 67.6% were between 20-29 years of age, 68.7% consumed alcohol, 28.5% did not do physical activity, and 33.2% were overweight. Regarding the eating habits considered a risk for NCCD, women exhibited more risk factors than men, whereas 41.1% drank more full-fat milk (p = 0.01) and 31.8% ate more fatty meats, while men drank more soda (p < 0.01). Physically active students consumed more fruits (p < 0.01) and salads (p = 0.01) and drank less soda (p < 0.01). The physically inactive students had a high prevalence of getting diabetes (p < 0.01) and of suffering from hypertension (p = 0.01) and high cholesterol (p < 0.01). Conclusions: University students in our study had unhealthy lifestyles. There is an urgent need for both a formulation and implementation of public health policies to promote health and decrease risk factors for NCCD.

Resumo em Inglês:

Abstract Aim: To verify the associations between organized physical activity out of school (PA) and cardiorespiratory fitness (CRF) with indicators of mental health in children. Methods: This is a cross-sectional study, with a sample of 226 students (47% girls) of public school in the south of Brazil aged between 6 to 11 years-old (8.36 ± 1.46). The cardiorespiratory fitness was measured by running and walking-test in six minutes, following the procedures of the “Brazil Sports Project”. PA was evaluated through a question and the Strengths and Difficulties Questionnaire assessed mental health indicators. Generalized linear regressions were used with a confidence interval of 95%. Results: Total difficulties (β = 2.691; 95%CI, 0.181 to 5.200) and emotional symptoms (β = 1.528; 95%CI, 0.609 to 2.448) were inversely associated with PA. Total difficulties (β = -0.013; 95%CI, -0.022 to -0.003), hyperactivity/attention deficit (β = -0.002; 95%CI, -0.010 to -0.002), and peer relationship problems (β = -0.002; 95%CI, -0.003 to -0.001) were associated with CRF in boys. Conclusion: A total of difficulties and emotional problems presented an inverse association with PA. Further, CRF was inversely associated with total difficulties, hyperactivity-inattention, and peer relationship problems.

Resumo em Inglês:

Abstract Aims: This study aimed to analyze the effect of verbal instruction on myoelectric activity (EMG) of the elbow flexors and shoulder extensors muscles during seated row exercise at 70%1RM, in trained and untrained individuals. Methods: The study sample comprised of seven males (21 ± 1.9 years) who had not practiced resistance training for at least one year (untrained group), and eight males (23 ± 2.6 years) who had regularly practice strength training for 2.4 ± 0.7 years (trained group). All individuals performed the seated row exercise with 70%1RM in conditions with and without verbal instruction. The EMG of the latissimus dorsi, teres major, posterior deltoid, triceps brachii long head and biceps brachii were measured. Results: There was no effect of verbal instruction on EMG at any muscle analyzed, for both groups. There was a difference between groups only for the teres major and triceps brachii (p < 0.05). Untrained individuals had greater myoelectric activity in teres major and triceps brachii long head muscles compared to the trained group during the exercise.

Resumo em Inglês:

Abstract Aims: The purpose of this study was to test an experimental fatigue protocol for the knee joint extensor muscles performed on an isokinetic dynamometer. Method: SPIRIT recommendations were applied. Participants were 40 healthy, young men and women. Protocol: The pre-fatigue quadriceps femoris peak torque during concentric maximum voluntary contractions (MVC) at 60º/s was measured. During the first protocol part, the task was to do MVC at 60°/s until a sequence of five concentric MVC was below 40% of its initial value. For the second part, intermittent quadriceps femoris muscle and hamstrings maximum voluntary isometric contractions for 30 s (ratio 2/1 seconds). Thirty seconds after the isometric MVC (post-fatigue), they did three concentric MVC. Then, after 5 minutes of absolute rest, they did two concentric MVC. Men and women showed a lower peak torque due to this protocol (p < 0.001). Conclusion: This protocol was effective for fatigue men and women’s quadriceps femoris muscle.

Resumo em Inglês:

Abstract Aim: Our purpose was to determine whether Transcranial Direct Current Stimulation (tDCS) improves performance in untrained individuals for supramaximal intermittent exercise. Methods: In a cross-over design, 11 healthy male subjects (26.8 ± 4.6 years) performed four Wingate trials after 20 minutes of anodal or sham tDCS over the left Insular Cortex (IC). For performance indexes, Relative Peak Power (RPP), Relative Average Power (RAP) and Fatigue Index (FI) were computed. Also, a Rating of Perceived Exertion (RPE) and Electromyography (EMG) signal were used to assess central and muscle fatigue development. Results: There was a significant difference over trials on all performance indexes, but there were no significant condition x trial interactions for any of the indexes. RPE increased significantly over trials, but there was no condition x trial interaction. There was no significant difference over trials on EMG for the rectus femoris and vastus medialis muscles; however, EMG decreased over trials for the vastus lateralis muscle. Furthermore, there was no condition x trial interaction on the EMG signal for any of the muscles. Conclusion: Our findings suggest that the anodal tDCS technique has no impact on physical performance, perceived exertion nor muscle fatigue development for supramaximal intermittent exercise.

Resumo em Inglês:

Abstract Aim: This research aimed to understand how Associação Brasileira de Educação (ABE – Brazilian Education Association) constituted visibility strategies for “body education” in Rio de Janeiro city. Method: As for methodology, we conducted documentary research whose primary sources were reports and minutes of ABE, newspapers, magazines, and books. Results: Our time framework was between 1928 and 1935, a period when ABE organized festivities called “Education Weeks” whose target group was students of Rio de Janeiro schools and their parents. Conclusion: It concluded that ABE managed to mobilize schools to demonstrate models of body practices consistent with the principles of a modern school. By alternating strategies such as lectures, courses, public exhibitions, ABE tried to print in the city the auspices of a modern and sanitized life which had not reached significant portions of the Brazilian population in a country that still claimed a more substantial state intervention in the social field. Similarly, public education was incipient and its project was still being drafted in a debate that involved a multitude of voices and agents with their interests. Between tradition and modernity, it would be difficult to organize discourses in two opposite poles. Finally, as in the discourses, in the field of practices, the mere polarization between tradition and modernity definitively does not explain the alliances and conflicts inherent to the various actors in the construction of greater visibility of “body education” by ABE.