Supervivencia del paciente trasplantado y del injerto renal en una cohorte retrospectiva en México / Transplant patient and kidney graft survival in a retrospective cohort in Mexico

Introducción: el conocimiento de la funcionalidad del injerto y la supervivencia del paciente es fundamental para valorar el éxito del trasplante renal. Objetivo: determinar la supervivencia de los pacientes trasplantados por tipo de donante y la funcionalidad de los injertos renales en una cohorte en México. Material y métodos: cohorte de trasplante renal de 2013 a 2017 en México. Se analizaron 790 pacientes seguidos por un año para valorar la supervivencia de los pacientes trasplantados por tipo de donante y la funcionalidad de los injertos renales. Para ello se usaron medidas de tendencia central y dispersión, así como tablas de supervivencia de Kaplan-Meier con SPSS, versión 25. Resultados: de los 790 pacientes, 518 fueron de donante vivo (65.56%) con supervivencia del paciente de 97.88% y de funcionalidad del injerto de 93.24% a 12 meses de seguimiento; 272 pacientes recibieron el injerto de donante fallecido con supervivencia del paciente de 91.18% y funcionalidad del injerto renal de 84.19%. Conclusiones: aún existe una diferencia de casi 5% en la supervivencia del paciente receptor de un donante vivo en referencia con un donante fallecido. Para la funcionalidad del injerto renal esta diferencia es > 7%. La donación cadavérica ha aumentado; sin embargo, incluso en cifras bajas es de aproximadamente el 35% en México

Background: Knowledge of the functionality of the graft and patient survival is essential to assess the success of kidney transplantation. Objective: To determine the survival of transplanted patients by type of donor and the functionality of kidney grafts in a cohort in Mexico. Material and methods: Kidney transplant cohort from 2013 to 2017 in Mexico. 790 patients followed up for one year were analyzed to assess the survival of transplanted patients by type of donor and the functionality of kidney grafts. For this, measures of central tendency and dispersion were used, as well as Kaplan-Meier survival tables with SPSS, version 25. Results: Out of the 790 patients, 518 were from living donors (65.56%) with patient survival of 97.88% and graft function of 93.24% at 12 months of follow-up; 272 patients received the graft from a deceased donor with patient survival of 91.18% and renal graft function of 84.19%. Conclusions: There is still a difference of almost 5% in the survival of the recipient patient from a living donor compared to a deceased donor. For the functionality of the kidney graft, this difference is > 7%. Cadaveric donation has increased; however, even at low figures is of approximately 35% in Mexico

Entrenamiento de handgrip isométrico de alta intensidad en adultos mayores pre-hipertensos y con diagnóstico de hipertensión arterial sistémica etapa I / Effects high intensity isometric handgrip training on blood pressure of hypertensive older people

Background: Moderate isometric handgrip exercise is an effective tool in the management of systemic hypertension. Aim: To evaluate the effectiveness of a high intensity isometric handgrip exercise protocol for the reduction of blood pressure in older people with pre or stage-1 hypertension. Material and Methods: Twenty-three participants aged 73.8 ± 6.6 years (range 61-90) completed eight weeks of high intensity isometric handgrip training 2 times per week, performing 32 contractions maintained for 5 seconds, with breaks of 5 seconds. Blood pressure (BP) was measured at baseline and at the end of the intervention. Results: Systolic blood pressure decreased from 141 ± 11 to 127 ± 10 mmHg (p < 0.01). The decrease in diastolic blood pressure was from 79 ± 7 to 74 ± 6 mmHg (p < 0.01). Conclusions: A blood pressure reduction was recorded in these participants after a period of high intensity isometric handgrip exercise.

Efecto de un entrenamiento con ejercicios de autocarga a alta velocidad en el equilibrio dinámico y estático en mujeres adultas mayores / Effect of a high-speed bodyweight resistance training on timed up and go and one leg stance in older women

Background: High-speed resistance training programs aiming to increase muscle power have beneficial effects on balance. Aim: To compare the effect of high-speed bodyweight resistance training and normal-speed bodyweight resistance training on the static and dynamic balance in community-dwelling older women. Material and Methods: Thirty-five non-disabled community-dwelling women aged 65 to 80 years were trained for 12 weeks using a high-speed bodyweight resistance training (HS-BT) or a normal-speed bodyweight resistance training (NS-BT). At baseline and after the intervention, One Leg Stance (OLS) and Timed Up and Go (TUG) tests were measured. Participants with an attendance to training sessions of less than 70% were excluded from the final analysis. Results: Data from 26 participants were analyzed, 14 women aged 71 ± 4 years who received HS-BT and 12 women aged 73 ± 4 years who received NS-BT. After 12 weeks of training, a significant improvement in TUG was observed in women receiving HS-BT (ΔTUG −1.07 sec, p < 0.01), but without changes in the OLS test. No significant changes were observed in any of the tests in the NS-BT group. Conclusions: High-speed bodyweight resistance training for 12 weeks improved TUG in these women.

Potencia aeróbica máxima en el obeso: Valores de referencia / Maximum aerobic power output in overweight and obese individuals

Background: The evaluation of physical fitness is important to determine workloads and to assess the effectiveness of exercise interventions in obese people. Aim: To determine the maximum aerobic power output (MAPO) in overweight and obese individuals and to establish reference parameters for the Chilean population. Material and Methods: One hundred five men and 218 women performed a cycle ergometer test up to 85% of their maximum heart rate. MAPO was determined by linear extrapolation of the theoretical maximum heart rate. Results: Among men, MAPO values were 234.9 ± 48.4 w for body mass index (BMI) values between 30 and 34.9 kg/m2, 235.1 ± 69.7 w for BMI between 35 and 39.9 kg/m2, 270.2 ± 86.5 w for BMI over 40 kg/m2. MAPO relative values were 2.27 ± 0.5, 2.16 ± 0.6 and 1.96 ± 0.8 w/kg, respectively. Among women, MAPO was 172.6 ± 36.1 w for a BMI < 30 kg/m2, 169.2 ± 39.4 w for BMI between 30 and 34.9 kg/m2, 179.5 ± 48.8 w f179.5 ± 48.8 w for BMI between 35 and 39.9 kg/m2 and 202.3 ± 57.3 w for BMI of 40 kg/m2 or over. The relative values were 2.33 ± 0.5; 2.02 ± 0.5; 1.91 ± 0.5 and 1.81 ± 0.5 w / kg (p < 0.05). Conclusions: MAPO estimation with a cycle ergometer test is well tolerated in overweight and obese individuals. MAPO decreased along with BMI increments in women. No association between BMI and MAPO in men was observed.

Control del ritmo cardiaco, ingesta energética y calidad del sueño en bailarines de danza clásica / Control of Heart Rate, Energy Intake and Quality of Sleep in Dancers of Classical Dance

Fundamento: la danza clásica requiere de capacidades específicas a nivel de fuerza, velocidad, y flexibilidad. El entrenamiento implica sobrecarga y estrés a largo plazo, al haber desequilibrio entre cargas y recuperación se puede originar síndrome de sobre entrenamiento. No existen procedimientos específicos que permitan diagnosticar este síndrome, es necesario tener marcadores que proporcionen información previa a su desarrollo. El análisis de la variabilidad del ritmo cardiaco es una herramienta válida y no invasiva para evaluar el sistema nervioso autónomo frente a la carga de entrenamiento. Objetivo: determinar la influencia de las fases de preparación al estreno de temporada sobre el control autonómico del ritmo cardiaco, ingesta energética y la calidad del sueño en bailarines de danza clásica. Método: se realizó un estudio descriptivo, de corte transversal realizado en la ciudad de Santiago de Chile, durante la preparación previa de bailarines de danza clásica, para la temporada del 2015 que se realizó durante el mes de julio. El universo estuvo constituido por los 25 bailarines profesionales, la muestra quedó conformada por nueve individuos sanos y sin lesiones y/o tratamiento farmacológico. A los bailarines se les registraron parámetros de variabilidad del ritmo cardiaco, registro de consumo de alimentos de 24 horas y encuesta de calidad de sueño. Se utilizó estadística descriptiva para medidas de tendencia central. Para la comparación de las fases, se utilizó la prueba de t student. Para el análisis de correlación se utilizó el test de Spearman. Resultados: no hubo diferencias significativas entre los parámetros evaluados. Se encontró una correlación entre pNN50 y el puntaje del Índice de calidad del sueño de Pittsburgh en la fase 1 (r= -0,77; p= 0,02). Conclusiones: desde el punto de vista estadístico los resultados sugieren que las fases de preparación previas al estreno no influyen en la variabilidad del ritmo cardiaco, ingesta energética y calidad de sueño. Clínicamente se observó que la variabilidad tiende a disminuir mientras que la ingesta energética aumenta y la calidad del sueño tiende a mejorar.

Foundation: classical dance requires specific capacities at the level of strength, speed and flexibility. Training implies a long-term training overload and stress; therefor, an imbalance load-recovery may cause a syndrome of overtraining. There are no specific procedures to diagnose it, and then it is necessary to have markers, which provide information previously. Objective: to determine the influence of training phases at the premiere of the season on the autonomic control of cardiac rate, energy consumption and sleep quality in dancers of classical dance. Method: a cross-descriptive study was realized in the Santiago de Chile city, during previous training of classical dance dancers, for the season 2015, which was performed during July. The universe constituted by 25 professional dancers, the sample selected was nine healthy dancers without lesions and/or pharmacological treatment. Variations of cardiac rate food consumption in 24 hours were registered and a survey for quality of sleep. A descriptive statistic was used for the measurements of central trend. For comparisons of phases, the test of t student was uses. For correlation analysis, Spearman test was used. Results: there were no significant differences among the parameters evaluated. It was found a correlation between pNN50 and the score for quality of sleep by Pittsburgh in the phase 1 (r= -0, 77; p= 0, 02). Conclusion: from the statistical point of view, the results suggest that the training phases before the premiere do not influence the variations of cardiac rate, energy intake and quality of sleep. It was clinically observed that the variability tends to decrease while the energy consumption increases and the quality of sleep tends to improve.