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CAN DARK CHOCOLATE ACUTE SUPPLEMENTATION IMPROVE CYCLOERGOMETER PERFORMANCE TEST?

Prevalence studies of dark chocolate may produce results similar to those observed after resistance exercise. The results examining the effects of dark chocolate ingestion on aerobic exercise performance are controversial. In addition, there is a choice in experiments with chronically consumed chocolate components (40 to 80 g) and large amounts of dark chocolate in studies to improve athletic performance. Therefore, the purpose of this study to verify the effect of acute supplementation of 80 g dark chocolate (70% cocoa) on performance on cycle ergometer test. Eleven healthy, physically active, but untrained men participated in the study. Two incremental cycle ergometer tests were performed to determine the peak power output (Ppeak) without chocolate supplementation (control condition, C) and with supplementation of 80 g of dark chocolate 70% cocoa (C70%) ingested orally two hours before the test. Variables such as heart rate (HR), blood glucose concentration [GLI], blood pressure (SBP/DBP), and rating of perceived exertion (RPE) were monitored. Data normality was verified by the Shapiro-Wilk test, and the results are presented as mean ± standard deviation (SD). The performance data of the tests and physiological variables were compared using Student's t-test for paired samples, adopting a significance level of P < 0.05. No statistical differences were found for Ppeak (238.0 ± 35.1 vs 250.9 ± 42.7 W) between conditions (C and C70%, respectively), as well as in the other variables. Therefore, we concluded that although the ingestion of 80 g of dark chocolate (70% cocoa) 2 hours prior the cycle ergometer test did not modify the peak power output, physiological and psychophysiological variables analyzed when presenting the average results, individual analysis demonstrated that this supplementation could be used to enhance peak power, which support individual as opposed to group analysis to evaluate performance responses to supplementation protocols.

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EXERGAMES AND CARDIOVASCULAR AND MOTOR ADAPTATIONS IN FEMALE ADOLESCENTES: AN INTERVENTION STUDY

Objective: to analyze the contribution of a physical conditioning program with exergames on postural control and to compare cardiovascular autonomic function among female adolescents.
 Methods: longitudinal study with overweight and non-overweight female adolescents, aged between 10 and 16 years, submitted to two assessments, when heart rate variability (HRV) and postural control were investigated during participation in the conditioning program with exergames
 Results: HRV indices for the time domain (RMSS and SDNN), showed significant differences between the pre and post moments of the program with exergames (14.67 [5.86; 22.72]; 12.38 [4, 82; 20.88]), respectively. In postural conditions BPA/AO open base with parallel feet and open eyes (0.19 [0.05; 0.32]), BTD/AO (semi-tandem base with straight forward foot and open eyes) (-0.17 [-0.32; -0.01]), BTD/OF (semi-tandem base with straight forward feet and eyes closed) (-0.21 [-0.38; -0.04]) and BTE/OF (semi-tandem base with left foot forward and eyes closed) (-0.2 [-0.38; -0.02]) differences were found between the pre and post moments of the muscle activation values of the flexor and extensor muscles of the ankle. The same adjustments were not identified for the overweight group. The total displacement of the pressure center in the BTD/AO postures (0.19 [0.02; 0.36]) in the eutrophic group (with adequate weight), and in the BTE/OF (0.77 [0.18; 1.41]) in the overweight group, in pre and post comparisons, statistically significant differences were found.
 Conclusion: exergames can contribute to physiological adaptations to cardiovascular and motor levels in adolescents.

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THE PERCEPTION OF USERS AND PROFESSIONALS OF A BASIC HEALTH UNIT IN THE CITY OF SANTOS–SP ON THE BODY PRACTICES PROGRAM

The aim of this study was to comprehend the perception of users and professionals of a Basic Health Unit in the city of Santos-SPon the body practices program. For that, a qualitative research was designed. Twenty-five individuals of both sexes, aged between 18 and 79years, participated in the study, of whom 13 participated in a program of body practices program held in a Basic Health Unit of Santos-SP,Brazil; one Physical Education Professional charged for developing the activities; 10 members of the multidisciplinary team; and the managerof the unit. Data were collected through semi-structured interview. The data analysis was performed by a non-a priori categories. The resultsshowed that there is a need for structural adaptation of the Basic Health Unit in PE professional’s perspective; in the multiprofessional team’sperspective, besides structural improvements, the program needs more dissemination and greater offer, precisely for positively evaluating thework of the instructor, and; in the user’s perspective, there is an appreciation for the instructor’s work and the activities developed, andimprovement of sociabilitiy as well. In this sense, we concluded that the body practices program have limits, mainly regarding structure andoffers. However, the body practices program is valued and appreciated by the users and professional of the Basic Health Unith.

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