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RESUMEN Introducción: La comunidad de Quilmes (Tucumán) consta de 2400 habitantes de media y alta montaña (1800 a 4000 metros sobre el nivel del mar). En el año 2018 se realizó un estudio sobre su estado de salud cardiovascular (Programa SONQO-CALCHAQUÍ 2018). Objetivo: Actualizar y amplificar el relevamiento realizado en el año 2018, para obtener un panorama más completo de la salud cardiovascular de la comunidad. Material y métodos: Se efectuó un estudio descriptivo transversal en la comunidad Quilmes, en personas que asistieron voluntariamente a consultorios especialmente establecidos, en el mes de septiembre de 2022. Se realizaron cuestionarios, dosajes de laboratorio, ECG, ecocardiograma, determinaciones antropométricas, y pruebas de resistencia y fuerza muscular. Resultados: Concurrieron 186 pobladores (119 mujeres y 67 varones) con edad 45,0±1,3 años. La prevalencia referida de factores de riesgo cardiovascular (hipertensión 17,8%, tabaquismo 14,1%, diabetes 4,9%, dislipidemia 30,6%) fue aceptable, pero con alta proporción sin exámenes en el último año. La alimentación estaba constituida principalmente por derivados de harinas, con escasa fruta y verdura fresca. La prevalencia de sobrepeso (34,3%) y obesidad (35,4%) fue elevada. El 40% de los encuestados tenía educación secundaria o superior. Se refirió buena calidad de vida (69,5±1,1% del valor máximo posible de satisfacción en la escala de autopercepción). El Minimental Test arrojó un valor promedio de 15,7±0,2 puntos. La fuerza prensil en el 55,8% de los casos estuvo por debajo del rango normal. Conclusiones: la población Quilmes presenta un estado físico aceptable, pero con alto índice de sobrepeso y obesidad, debido al régimen alimentario. Esta situación debería ser contemplada en los programas de salud futuros.
ABSTRACT Background: The community of Quilmes (Tucumán) encompasses 2400 mid- and high mountain inhabitants (1800 to 4000 meters above sea level). In 2018, a study was carried out on their cardiovascular health status (2018 SONQO-CALCHAQUÍ Program). Objective: The aim of this study is to update and expand the survey carried out in 2018, to obtain a broader panorama of the cardiovascular health of this community. Methods: A descriptive cross-sectional study was carried out in the Quilmes community, in people who voluntarily attended specially established clinics in September 2022. Questionnaires, laboratory tests, ECG, echocardiogram, anthropometric measurements, muscular resistance and strength tests were carried out. Results: A total of 186 patients (119 women and 67 men) aged 45.0±1.3 years attended the study. The prevalence of cardiovascular risk factors (hypertension 17.8%, smoking 14.1%, diabetes 4.9% and dyslipidemia 30.6%) was acceptable, but a high proportion of cases had not been examined in the last year. The diet consisted mainly of flour products, with little fresh fruit and vegetables. The prevalence of overweight (34.3%) and obesity (35.4%) was high. Forty percent of respondents had secondary or higher education. Good quality of life (69.5±1.1% of the maximum possible value of satisfaction on the self-perception scale) was reported. The Minimental Test average was 15.7±0.2 points. Prehensile strength in 55.8% of cases was below the normal range. Conclusions: The Quilmes population presents an acceptable physical condition, but with a high rate of overweight and obesity, due to the diet, a condition that should be considered in future health programs.
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The aim of this study was to describe, through a systematic review, the acute and chronic effects of isometric handgrip exercise on cardiovascular variables in hypertensive individuals. In this systematic review, we included studies that analyzed whether a single bout or a program with isometric exercises affect cardiovascular variables in hypertensive adults. The electronic database PubMed/Medline was searched for relevant studies published until May 2017. Of the 2927 studies initially identified, 2916 were excluded based on title and abstract and five on the basis of full-text assessment, leaving six studies remaining. In addition, one further study cited in the references of the included articles was included in this review, totaling seven studies included (five studies on the chronic effects of isometric handgrip exercise on cardiovascular parameters). None of the acute studies observed post-exercise hypotension. The majority of the chronic studies found decreases in office blood pressure after isometric handgrip training, with training ranging from 6 to 10 weeks, while heart rate variability parameters were improved in one study and did not change in another. Reduction in oxidative stress was observed; however, this variable was only analyzed in one study. In hypertensives, acute responses to isometric handgrip exercise are very limited due to the small number of studies, therefore more research is required. Furthermore, chronic isometric handgrip training reduces blood pressure; however, there is still a gap in the knowledge on the effects of this modality of exercise on other cardiovascular variables-such as endothelial function, oxidative stress, and cardiac autonomic modulation-which should be addressed in future studies.
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Os distúrbios do sono e alterações associadas atingem grande parte da população que trabalha no turno noturno, afetando a sua qualidade de vida. O objetivo do presente trabalho foi comparar a capacidade aeróbia e as respostas cardiovasculares ao exercício máximo em indivíduos com ciclo sono vigília fisiológico e com inversão dos turnos de trabalho. Foram analisados 18 indivíduos do sexo masculino, sedentários, com idade entre 23-35 anos, divididos em 2 grupos: a) grupo controle, formado por estudantes (n=9) e b) grupo experimental, composto por controladores de tráfego aéreo que trabalhavam com inversão dos turnos de trabalho (n=9). Para a medida da capacidade aeróbia, foi determinado o VO2máx. por meio do analisador de gases metabólicos (VO-2000, Aerosport, Medgraphics). Para o teste de esforço máximo foi realizado o protocolo de rampa em esteira (Millenniun ATL Inbramed) e as respostas cardiovasculares (FC, PAS e PAD) foram verificadas antes e após a realização do exercício. De acordo com os resultados, o grupo experimental apresentou valores inferiores de FC no repouso (79,8 ± 11,5 bpm vs. 70,3 ± 3,8 bpm), no 5º (112,7± 15,1 bpm vs. 98,7 ± 6,3 bpm) e no 7º minuto (108,7 ± 16,6 bpm vs. 93,9 ± 6,8 bpm) de recuperação. Quanto à PAS, foram observados valores superiores durante o repouso (110,0 ± 11,2 mmHg vs. 104,0 ± 5,7 mmHg), nos indivíduos do grupo controle. Já a PAD, mostrou níveis superiores no 5º minuto da recuperação no grupo experimental (67,0 ± 4,4 mmHg vs. 58,9 ± 6,0 mmHg). Por fim, foram verificados valores superiores de VO2máx. para os indivíduos do grupo controle (58,9 ± 6,1 ml/kg/min) em relação ao experimental (53,7 ± 2,5 ml/kg/min). Desta forma, podemos concluir que a inversão nos turnos de trabalho, afetando o ciclo sono-vigília, altera não apenas o ciclo circadiano das variáveis cardiovasculares no repouso e na recuperação do esforço, como também traz prejuízos à capacidade funcional, podendo comprometer o desempenho...
Sleep disturbs and associated alterations reach great part of the population which works at night, affecting their quality of life. The aim of the present study was to compare the aerobic capacity and the cardiovascular responses to maximal exercise in subjects with physiological sleep/wake cycle and with work shift inversion. 18 male subjects, aged 23-35 years, were assigned to either a shift-workers (Experimental; n=9) or a control group (Control; n=9). All the subjects underwent a treadmill exercise test in order to obtain the BP, HR behavior in the recovery period. Exhaled air was collected every 10 minutes for VO2max. Shift-workers presented lower heart rate values at rest (79.8 ± 11.5 bpm vs. 70.3 ± 3.8 bpm), 5th (112.7 ± 15,1 bpm vs. 98,7 ± 6,3 bpm) and 7th min. (108.7 ± 16.6 bpm vs. 93.9 ± 6.8 bpm) at recovery. SBP showed significant increased values in control group just at rest (110.0 ± 11.2 mmHg vs. 104.0 ± 5.7 mmHg). The control group presented lower values of DBP at the 5th min. (67.0 ± 4.4 mmHg vs. 58.9 ± 6.0 mmHg) and higher values of VO2max. (58.9 ± 6.1 ml/kg/min vs. 53.7 ± 2.5 ml/kg/min). We concluded that the alterations in the working shifts affect the circadian rhythms and the cardiovascular variables at rest and recovery periods of the exercise stress testing and can compromise the functional capacity of the subjects.