Ioranny Raquel Castro de Sousa

Traditional games resulted in post-exercise hypotension and a lower cardiovascular response to the cold pressor test in healthy children.

The present study aimed to verify if blood pressure (BP) reactivity could be reduced through a previous single session of active playing when compared to sedentary leisure. Sixteen pre-pubertal healthy children participated in this study. After familiarization with procedures and anthropometric evaluation, participants performed three sessions in randomized order: (1) 30 min of traditional Brazilian games (PLAY); (2) 30 min of video game playing (DDR); and (3) 30 min of watching TV (TV). Each session lasted 80 min, being 10 min of rest; 30 min of intervention activity; and 40 min of recovery. After recovery, the Cold Pressor Test (CPT) was used for the assessment of acute cardiovascular reactivity. BP was recorded at 30 s and 1 min during the CPT. Analysis of variance showed post-exercise hypotension (PEH) only after PLAY, and that systolic and diastolic BP were significantly increased in all conditions during CPT. However, the magnitude of the CPT-induced BP response was significantly less in PLAY compared to DDR and TV. The PEH observed during recovery and the reduced BP response to CPT following playing traditional games may be due its higher cardiovascular and metabolic demand as was indicated by the increased heart rate, oxygen consumption, and BP. It was concluded that BP reactivity to stress may be reduced through a previous single session of traditional games and that PEH was recorded only after this exercise form. This benefit indicates a potential role of playing strategies for cardiovascular health in childhood.

The period of the day affects the twenty-four hour blood pressure response to an acute combined exercise session in Brazilian jiu jitsu athletes

The purpose of this study was to compare the effect of a combined exercise session performed at different periods of the day on the 24h blood pressure (BP) response. Anaerobic threshold (AT) and 12 repetition maximum (12RM) tests were evaluated in nine Brazilian jiu-jitsu athletes (male) (22±3.7 y; 176±5.0 cm; 73.4±9.7 kg; 6.8±2.1 % body fat). Four experimental sessions were performed: resistance exercise followed by aerobic exercise [Morning (MornS) and Afternoon (AfternS)] and Control (C) [Morning and Afternoon]. The morning sessions were conducted at 09:00 a.m. and the afternoon sessions were conducted at 3:00 p.m. The resistance exercise consisted of three sets at 90% of a 12RM for six resistance exercises. The aerobic exercise consisted of 15min at 90% of the AT. Blood pressure (BP) was measured before, during and 1h (Microlife(r) BP3A1C) after the performance of exercises in laboratory, and then during daily activities for the succeeding 23h by ambulatory BP monitoring (Dyna-MAPA(r)). Analysis of the area under the curve (AUC) indicated significant reductions in blood pressure parameters at various time points during the 24h monitoring period. For systolic BP (SBP), significantly lower values were shown following the morning session versus the control (MornS: 1756.2±100.8 vs. C: 1818.2±84.3 mmHg*15h; p < .05) and total-24h (MornS: 2695.8±143.3 vs. C: 2784.1±143.2 mmHg*24h; p < .05). The total-24h mean BP (MAP) was also significantly lower following the morning session versus the control (MornS: 2015.7±121.2 vs. C: 2087.3±153.8 mmHg*24h; p < .05). There were significant differences in the sleeping AUC of SBP (AfternS: 883.6±27.0 vs. C: 965.2±67.9 mmHg*9h; p< .05), diastolic BP (DBP) (AfternS: 481.4±30.9 vs. MornS: 552.9±34.2 and C: 562.1±52.3 mmHg*9h; p < .01) and MBP (AfternS: 651.9±22.4 vs. MornS: 708.7±43.1 and C: 726.9±64.7 mmHg*9h; p < .01). The combined exercise performed at different periods of the day contributed distinctly to the reduction of BP. The morning session was important in reducing SBP and MBP in the total-24h monitoring, while the afternoon session reduced SBP, DBP and MBP during sleeping in jiu-Jitsu athletes.

Reprodutibilidade do protocolo de lactato mínimo com intensidade do esforço prévio individualizado pela PSE

Abstract: The lactate minimum protocol (LM) is preceded by a maximum effort to induce hyperlactatemia. Objective: To verify the reliability of LM test with induced hyperlactatemia realized by exercise intensity individualized by the rating perceived effort (RPE). Methods: The sample was composed of 20 students, physically active (25.4 ± 4.1 years, 14.1 ± 5.0% fats) who were undertaken to two tests with identical methodology of LM. Induction of hyperlactatemia was performed by a test with four stages, lasting three minutes each, loads individualized by the PSE (levels 10, 13, 16 and 17-20 last stage until voluntary exhaustion). After eight minutes of recovery the progressive test started with initial load of 75W and 25W increments every 3 min until exhaustion. Results: The intensities of LM 1 (155.0 ± 23.8 W) and 2 (157.5 ± 27.0 W) did not differ statistically (p = 0.795) and showed good reliability (ICC = 0.79) and agreement [-2.5 W of mean difference and ± 41.8 W of bias]. Conclusion: The LM test, with loads for induction of hyperlactatemia individualized by the RPE, has shown to be reliable in physically active individuals.

Diferentes ordens do exercício combinado: efeitos agudos de 24 horas sobre a pressão arterial de atletas

To verify 24-hour blood pressure (BP) responses in young adults after different orders of aerobic (AE) and resistance exercises (RE). Anaerobic threshold (AT) and strength (12 RM) were evaluated in ten healthy men (22.6 ± 3.7yrs; 70.3 ± 5.8 kg; 175.9 ± 5.8 cm). Four experimental sessions: Aerobic + Resistance (AR); Resistance + Aerobic (RA); Concurrent circuit (CC) and control day (CO) were randomly performed. All sessions had the same duration and intensity, AE: 15 min at 90% of AT; ER: 15 min at 90% of 12 RM with 12 reps (6 exercises). BP was measured before, during and 1 h (Microlife® BP3A1C) after performing exercises in the laboratory and 23 h during daily activities using ambulatory blood pressure measurement (Dyna-MAPA®). Systolic BP (SBP) in 24 h and awake periods, and Diastolic BP (DBP) in 24 h, sleep and awake periods, and Mean BP in awake period were lower in RA session compared with CO session with moderate to high effect size (d de Cohen = -0.46/-0.78). The DBP area under the curve in RA was lower than CO in awake (1004 ± 82 vs. 1065 ± 107; p < 0.047) and 24 h (1456 ± 103 vs. 1528 ± 132; p < 0.026) periods. The SBP delta were lower in RA at 0-1 h (-12.0 mmHg), 2-3h (-16.5 mmHg), 6-7 h (-19.4 mmHg) and 10-11 h (-13.0 mmHg) compared with CO; lower in AR at 4-5h (-19.2 mmHg) and 6-7 h (-20.2 mmHg) compared with CO; and lower in CC at 2-3h (-15.6 mmHg) and 6-7 h (-17.5 mmHg) compared with CO. The DBP was lower at 4-5 h (-14.0 mmHg) in RA compared with CO. After performing RA exercises, there were greater decreases in BP during 24 h in young adults.

Efeitos da alternância entre exercícios aeróbicos e resistência exercício em diferentes sessões de exercício concorrente em respostas pressão arterial de atletas: um estudo randomizado

O exercicio aerobico (AE) e exercicios resistidos (ER) tem demonstrado beneficios na prevencao e/ou controle da pressao arterial (PA), embora as influencias destes dois modelos de exercicios (exercicio concorrente) em uma unica sessao sobre a PA ainda sao desconhecidos. Desta forma, o objetivo do presente estudo foi verificar os efeitos da alternância entre EA e ER em diferentes sessoes de exercicios concorrente sobre as respostas da PA. Participaram do estudo 10 jovens atletas do sexo masculino (22,6 ± 3,78 anos, 70,3 ± 5,89 kg, 175,96 ± 5,83 centimetros, 6,8 ± 2,38 % de gordura corporal). Os testes consistiram de quatro protocolos randomizados, sendo a sessao AR composta por EA seguido do ER, a sessao RA por ER seguido do EA (AR), a sessao circuito (CC) (ER e EA alternando de forma intermitente ) e a sessao de controle (CO) (sem exercicio) . EA foi realizado em uma esteira a 90% do lactato minimo indireto e o ER foi realizado em forma de circuito a 90% de 12 RM, alternado por segmento em seis exercicios. A PA foi mensurada em todos os protocolos, durante o momento repouso e no periodo de recuperacao pos-exercicio (REP). Observou-se uma reducao da pressao arterial sistolica (PAS) aos 45 e 60 minutos de recuperacao do protocolo RA em relacao aos valores pre-exercicio. A PA diastolica e media nao apresentaram diferencas significativas. A sessao RA foi mais eficaz em demonstrar respostas hipotensoras em relacao aos outros protocolos experimentais.

Comparison of prevalence of methods of weight loss pre-competition in different categories

Judo athletes often use in previous periods of competitions, methods for rapid weight loss. This purpose of this practice is benefit the athlete, competing in a lower weight category and tries to regain weight in a short space of time between the weigh-in and competition. However, the use of this practice without professional supervision may be harmful to the health of the athlete. Objective: Investigate the methods and strategies used for weight loss in judo competitors at the national level and different categories. Methods: 60 athletes the national levels, male and female, of different ages (juvenile, junior, senior and master) answered a questionnaire regarding the use or not of methods for weight loss and what are the strategies loss weight often used in the pre-competition period. Results: 80% (juvenile), 69.6% (junior), 88.9% (senior) and 100% (master) use methods of weight loss pre-competition, and 70% (juvenile), 69.6% (junior), 77.8% (senior) and 77.7% (master) reported their performance impaired by the use of these strategies. Conclusion: We found that a much higher judo athletes from different age categories, makes use of methods or strategies for rapid weight loss. This fact has shown a direct deleterious effect on the physical and emotional performance of athletes during competitions.

Comparação da prevalência de métodos de perda de peso pré-competição em judocas de diferentes categorias

Judo athletes often use in previous periods of competitions, methods for rapid weight loss. This purpose of this practice is benefit the athlete, competing in a lower weight category and tries to regain weight in a short space of time between the weigh-in and competition. However, the use of this practice without professional supervision may be harmful to the health of the athlete. Objective: Investigate the methods and strategies used for weight loss in judo competitors at the national level and different categories. Methods: 60 athletes the national levels, male and female, of different ages (juvenile, junior, senior and master) answered a questionnaire regarding the use or not of methods for weight loss and what are the strategies loss weight often used in the pre-competition period. Results: 80% (juvenile), 69.6% (junior), 88.9% (senior) and 100% (master) use methods of weight loss pre-competition, and 70% (juvenile), 69.6% (junior), 77.8% (senior) and 77.7% (master) reported their performance impaired by the use of these strategies. Conclusion: We found that a much higher judo athletes from different age categories, makes use of methods or strategies for rapid weight loss. This fact has shown a direct deleterious effect on the physical and emotional performance of athletes during competitions.

Comparación de la prevalencia los métodos de pérdida de peso antes de la competición de los judocas de las diferentes categorías

Judo athletes often use in previous periods of competitions, methods for rapid weight loss. This purpose of this practice is benefit the athlete, competing in a lower weight category and tries to regain weight in a short space of time between the weigh-in and competition. However, the use of this practice without professional supervision may be harmful to the health of the athlete. Objective: Investigate the methods and strategies used for weight loss in judo competitors at the national level and different categories. Methods: 60 athletes the national levels, male and female, of different ages (juvenile, junior, senior and master) answered a questionnaire regarding the use or not of methods for weight loss and what are the strategies loss weight often used in the pre-competition period. Results: 80% (juvenile), 69.6% (junior), 88.9% (senior) and 100% (master) use methods of weight loss pre-competition, and 70% (juvenile), 69.6% (junior), 77.8% (senior) and 77.7% (master) reported their performance impaired by the use of these strategies. Conclusion: We found that a much higher judo athletes from different age categories, makes use of methods or strategies for rapid weight loss. This fact has shown a direct deleterious effect on the physical and emotional performance of athletes during competitions.