ABSTRACT
Introducción. En Chile las tasas de sedentarismo infantil han aumentado, siete de cada 10 niños no cumple con los estándares mínimos recomendados por la Organizaciónn Mundial de la Salud. Faltan en Chile estudios que asocien el sedentarismo de tiempo libre y las horas sedentes en jornada escolar con las habilidades cognitivas. Objetivo. Determinar los cambios en las habilidades cognitivas posterior a la realización de quiebres en la conducta sedentaria. Métodos. Participaron 83 alumnos de 12 a 14 años, pertenecientes a 7° y 8° básico de la región metropolitana de Santiago de Chile. Los alumnos fueron distribuidos aleatoriamente como casos (42) y control (41). Se realizó durante 10 días, un protocolo de quiebres en la conducta sedentaria de 3 minutos cada 40 minutos, durante toda la jornada escolar. Ambos grupos tuvieron evaluaciones fisiológicas y aplicación de test de memoria y atención pre y post intervención. Resultados. Se encontraron diferencias estadísticamente significativas en la variable de atención con un valor p-value de (< 0,005) a favor del grupo intervenido. En valores de presión arterial sistólica y frecuencia cardiaca se evidencio un descenso significativo en el grupo intervenido (p<0,005) Conclusión. En este estudio se demuestra que el protocolo aplicado, mejora la habilidad cognitiva de atención en la población estudiada y además se reducen los valores de parámetros fisiológicos.
Background. In Chile, child sedentary lifestyle rates have increased; seven out of 10 children do not meet the minimum standards recommended by the World Health Organization. There is a lack of studies in Chile that associate free-time sedentary behavior and seated hours during the school day with cognitive skills. Objective. To determine the changes in cognitive abilities after the completion of sedentary behavior breaks. Methods. 83 students from 12 to 14 years old participated, belonging to 7th and 8th grade of the metropolitan region of Santiago de Chile. Students were randomly distributed as cases (42) and control (41). A protocol of sedentary behavior breaks of 3 minutes every 40 minutes was carried out during 1 week, during the whole school day. Both groups had physiological evaluations and application of memory tests and pre and post intervention care. Results. Statistically found differences were found both in the care variables with a p-value of <0.005 in favor of the intervened group, as well as in the systolic blood pressure and heart rate values evidencing a significant decrease in the intervened group (p < 0.005) Conclusion. This study shows that the applied protocol improves the cognitive ability of attention in the studied population and also reduces values of physiological parameters.
ABSTRACT
The functional assessment of patients with dyspnea usually uses static or submaximal exercise tests, which provide limited information because they do not expose patients to the real situation that causes exercise intolerance. The cardiopulmonary exercise test (CPET) is an increasingly used tool that can be used in these circumstances. It determines peak oxygen consumption, anaerobic threshold and cardiac and respiratory reserves, measuring oxygen uptake and carbon dioxide production during standardized exercise conditions. It is useful for risk assessment in cardiothoracic surgery and can provide valuable information such as the timing for transplant in patients with severe chronic disease. The test is non-invasive, has a short duration, and exhibits an adequate safety profile in specialized centers. It is mainly indicated for the dynamic evaluation of athletes or patients with heart, respiratory, and neuromuscular diseases, it is essential part of the study of dyspnea of unknown origin, and in the prognostic assessment of patients who face highly complex interventions. This review provides a comprehensive review of CPET with emphasis on its main indications in healthy people, athletes and, in particular, in functional evaluation of patients with exercise limitations in the context of their chronic diseases.
Subject(s)
Exercise Test , Oxygen Consumption , Prognosis , Exercise ToleranceABSTRACT
Cardiopulmonary rehabilitation is a promising therapy for Pulmonary arterial hypertension (PAH) whose survival does not exceed 65% at five years. We performed a literature search about rehabilitation on PAH in MEDLINE, LILACS and COCHRANE databases, considering articles from 2005 to 2017. Fifteen articles were incorporated in the final analysis. We obtained information about safety parameters, type of exercises applied, duration and frequency of sessions. The interventions included aerobic, resistance and respiratory muscle training exercises. The results showed improvements in peak oxygen uptake, six minutes walking test, quality of life and inspiratory muscle strength, among others. We conclude that the evidence supports the recommendation of physical rehabilitation in selected patients with stable PAH as a complementary strategy to the available pharmacological therapy.