It is estimated that labor activity at high altitudes in Chile will increase from 60,000 to 120,000 workers by the year 2020. Oxygenation of spaces improves the quality of life for workers at high geographic altitudes (<5,000 m). The aim of this study was to determine the effect of a mobile oxygen module system on cardiorespiratory and neuropsychological performance in a population of workers from Atacama Large Millimeter/submillimeter Array (ALMA, 5,050 m) radiotelescope in the Chajnantor Valley, Chile. We evaluated pulse oximetry, systolic and diastolic arterial pressure (SAP/DAP), and performed neuropsychological tests (Mini-Mental State examination, Rey-Osterrieth Complex Figure test) at environmental oxygen conditions (5,050 m), and subsequently in a mobile oxygenation module that increases the fraction of oxygen in order to mimic the higher oxygen partial pressure of lower altitudes (2,900 m). The use of module oxygenation at an altitude of 5,050 m, simulating an altitude of 2,900 m, increased oxygen saturation from 84 ± 0.8 to 91 ± 0.8% (p < 0.00001), decreased heart rate from 90 ± 8 to 77 ± 12 bpm (p < 0.01) and DAP from 96 ± 3 to 87 ± 5 mmHg (p < 0.01). In addition, mental cognitive state of workers (Mini-Mental State Examination) shown an increased from 19 to 31 points (p < 0.02). Furthermore, the Rey-Osterrieth Complex Figure test (memory) shown a significant increase from 35 to 70 (p < 0.0001). The results demonstrate that the use of an oxygen module system at 5,050 m, simulating an altitude equivalent to 2,900 m, by increasing FiO2 at 28%, significantly improves cardiorespiratory response and enhances neuropsychological performance in workers exposed to an altitude of 5,050 m.
Objective: This work sought to evaluate a physical exercise program of moderate intensity in patients operated of bariatric surgery and its influence on muscle strength. Method: Randomized clinical trial, with an intervention group and a control group. Forty-three patients were operated of bariatric surgery. The intervention group was applied a program of moderate physical activity during six months. Grip strength and bioimpedance were measured at their baseline form, at one month, and six months after surgery. A bivariate study was conducted to observe variable changes. Results: Upon conducting Student´s t for independent samples in all the variables (weight, body mass index, grip strength, lean mass, fat mass, and metabolism), the result is that no significant differences exist between the intervention group and the control group with p > 0.05. Conclusion: A program of moderate physical activity lasting six months in patients intervened of bariatric surgery has no significant result in the development of muscle mass evaluated through manual dynamometry and bioimpedance.
Introducción: la actividad física en bebés mediante terapia acuática es ampliamente conocida para el posterior desarrollo de las áreas sensoriales, cognitivas y motoras. De este modo, el bebé tendrá mayor sensación de libertad, placer y recuerdo del útero materno. Además, el margen de seguridad terapéutico en el agua es muy amplio, lo que permite un desarrollo óptimo de programas de estimulación temprana acuática.Objetivo: llevar a cabo una revisión sistemática de la literatura científica sobre el ejercicio físico en el agua y su influencia en el neurodesarrollo de los bebés.Métodos: se ha efectuado una búsqueda sistemática mediante el modelo PRISMA. La búsqueda de los artículos de la presente revisión se realizó en las bases de datos a través de Scopus y PubMed, así como en la plataforma Web of Science (WOS) y en webs oficiales de organismos internacionales, como la Organización Mundial de la Salud (OMS/WHO). La revisión se efectuó entre los meses de mayo y noviembre del año 2015.Resultados: se incluyen un total de 14 artículos que cumplen los criterios de inclusión. La realización de ejercicios acuáticos en bebés tiene más beneficios que riesgos. No existe un aumento de enfermedades infecciosas, respiratorias o alérgicas. Por el contrario, se describen efectos beneficiosos en el ámbito social, mayor apego con los padres y efectos positivos en la movilidad, coordinación y velocidad de reacción ante los estímulos. El agua supone un medio adecuado para el tratamiento de niños con diversidad funcional, ya que reduce la espasticidad y permite realizar movimientos más amplios que en el medio terrestre.Conclusiones: la metodología empleada en los estudios incluidos en la presente revisión es diversa. Los bebés que realizan actividad física en el agua ven aumentadas su movilidad funcional, coordinación y sociabilización, tanto con los padres como con otros bebés presentes en el grupo de intervención. Algunos estudios señalan que los ejercicios acuáticos promueven mejoras en el neurodesarrollo.
Background: Sleep disorders are associated with overweight and obese children, and could decrease life quality with limitations to normal daily activities. The purpose of the study is to describe the prevalence of sleep disorders in a cohort of overweight/obese children using respiratory polygraphy. Methods: A descriptive cross-sectional study was conducted in Granada (Spain) on a sample of 98 children with overweight or obesity. The presence of sleep disorders was determined by respiratory polygraphy. Results: Regarding apnoea–hypopnea-index (AHI) results, 44% of affected children had severe sleep apnoea–hypopnea syndrome (SAHS), and the remaining 56% had a mild form of the disorder. With respect to oxygen-desaturation index, 56% of the same group had severe SAHS, 32% had mild SAHS, and the remaining 12% did not suffer from SAHS. Among participants, average scores of 13.8 obstructive apnoea, 7.7 central apnoea, and 13.6 hypopnoea were recorded. Conclusions: Respiratory polygraphy can provide conclusive results in the diagnosis of SAHS in overweight/obese children. Interventional programmes designed and implemented to reduce overweight and obesity can improve quality of sleep and life in children.
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