Effects of the type of exercise performed on the vibration delivered during whole-body vibration exercises

While the internal load factors of whole-body vibration training have been widely investigated, the study of external load magnitude has been overlooked. Thus, the aim of the present study was to evaluate differences in whole-body vibration stimulus magnitude between static/dynamic whole-body vibration training at various vibration conditions. Four Pro 5 Plate vibration platforms were exposed to twelve different vibration conditions and a triaxial USB Impact X250-2 accelerometer was used to measure platform acceleration during each condition. Paired samples t-test was calculated to evaluate differences among amplitude, frequency, time of acceleration and time of deceleration of each platform at each vibration condition and during static (squat of 90° knee flexion) or dynamic exercise (from stand to 90° knee flexion squat). Also, the intra-class correlation coefficients were examined in order to assess the inter-instrument reliability. Peak-to-peak amplitude, frequency, time of acceleration and deceleration of the vibration platform were not modified by the type of exercise performed. Moreover, the four platforms tested showed high repeatability values during the execution of free vibration, static or dynamic squat in all vibration conditions. This study confirms that the vibration delivered by the Pro 5 Plate vibration platform is not modified during the realization of static or dynamic exercises

Adherencia a la dieta mediterránea en adultos inactivos, practicantes de ciclo indoor y ciclistas aficionados

Introducción: existe información limitada sobre la relación entre la adherencia a la dieta mediterránea (ADM) y la práctica deportiva. Objetivo: determinar la posible asociación de la práctica deportiva y el volumen de entrenamiento en bicicleta con la ADM y la influencia de la proximidad de una prueba ciclodeportiva sobre la ADM. Material y métodos: una primera evaluación de la ADM en 785 (84 mujeres) ciclistas aficionados (volumen = 7 horas/semana), 514 (224 mujeres) practicantes de ciclo indoor (volumen: 2-6 horas/semana) y 718 (411 mujeres) adultos inactivos fue desarrollada en mayo, coincidiendo con la participación de los ciclistas en una prueba ciclodeportiva. Una submuestra de 359 ciclistas y 148 inactivos fueron evaluados nuevamente en noviembre, en fecha alejada de la prueba ciclodeportiva. Se utilizó el cuestionario MEDAS-14 para valorar la ADM y un cuestionario autodiseñado para evaluar el volumen de entrenamiento. Resultados: un 40% de los sujetos evidenció alta ADM. En ambos sexos, los deportistas mostraron mayor ADM que los inactivos, con los mejores índices para los grupos de ciclistas (p < 0, 001). La relación entre la ADM y el volumen de entrenamiento fue débil (hombres: r = 0, 137, mujeres: r = 0, 173; p < 0, 001). La ADM de los ciclistas disminuyó de mayo a noviembre (p < 0, 001) sin cambios en los sujetos inactivos (p = 0, 535). Conclusiones: la práctica deportiva en bicicleta se asocia con una mayor ADM con limitada influencia del volumen de entrenamiento y con efectos positivos transitorios de la participación en una prueba ciclodeportiva. Introduction: There is limited information referred to the relationship between adherence to the Mediterranean Diet (AMD) and sports practice. Objective: To determinate the association of cycling practice and cycling training volume with the AMD and the influence of the participation in a high-demand cyclist event on the AMD. Material and methods: A first evaluation of AMD in 785 (84 women) amateur cyclists (volume: = 7 hours/week), 514 (224 women) indoor cycling practitioners (volume: 2-6 hours/week) and 718 (411 women) inactive adults was conducted in May coinciding with the participation of cyclists in a cycling event. A subsample of 359 cyclists and 148 inactive subjects agreed to be retested in November, far from the cycling event date. The MEDAS-14 questionnaire was used to assess the AMD and a self-designed questionnaire was used to assess the volume of training. Results: 40% of subjects showed high AMD. In both sexes, athletes showed higher AMD than inactive subjects, with the highest indexes for groups of cyclists (p < 0.001). The relationship between AMD and training volume was weak (men: r = 0.137, women: r = 0.173; p < 0.001). The AMD of cyclists decreased from May to November (p < 0.001) with no significant changes in inactive subjects (p = 0.535). Conclusions: Cycling is associated to higher values of AMD with a limited influence of training volume and transient positive effects of participation in a cycling endurance event

Educational intervention on nutritional, hygiene and health habits, in pupils of elementary (Intervención educativa sobre hábitos nutricionales, higiene y salud en alumnos de primaria)

An educational research study based on a classroom intervention with 6-9 year-old students (1th grade of Compulsory Primary Education.) is presented. The fundamental aim has been to verify the possible changes in the food ingestion, in the daily activities and in the habits of hygiene and health, in healthy children and girls in a Summer campus. For it we realized two educational interventions, which were including three evaluations, a preintervention and two more evaluations after every educational intervention. The results show that the realized interventions have been effective and have improved, in general, the habits in the daily activities of hygiene and of health of the children participants in the Campus. El trabajo que se presenta es una investigación educativa fruto de una intervención en un espacio físico-deportivo con estudiantes de 6 a 9 años (1º Ciclo de Educación Primaria). El objetivo fundamental ha sido averiguar los posibles cambios en la ingesta de alimentos, en las actividades diarias y en los hábitos de higiene y salud, en niños y niñas sanos en un campus de verano. Para ello realizamos dos intervenciones educacionales, que incluían tres evaluaciones, una preintervención y dos evaluaciones más después de cada intervención educacional. Los resultados muestran que las intervenciones realizadas han sido efectivas y han mejorado, en general, los hábitos en las actividades diarias, de higiene y de salud de los niños participantes en el campus

A comparison of modelled serum cTnT and cTnI kinetics after 60 min swimming

Post-exercise elevations of cardiac troponin T (cTnT) and I (cTnI) are often used in isolation but interpreted interchangeably. Research suggests, however, that post-exercise cTn kinetic might differ with each isoform. In this cross-sectional observational study, we collected blood samples before, immediately after (5 minutes), and at 1-, 3-, 6-, 12-, and 24-hours post-exercise in a mixed cohort of 56 participants after a 60-min (age range from 14 to 22, 57.1% female). swimming trial. Cardiac troponin kinetics were modeled using Bayesian mixed-effects models to estimate time to peak (TTP) and peak concentration (PC) for each isoform, while controlling for participants sex, tanner stage and average relative heart rate during the test. Exercise induced an elevation of cTnT and cTnI in 93% and 75% of the participants, respectively. Cardiac troponin T peaked earlier, at 2.9 h (CI: 2.6 - 3.2 h) post-exercise, whereas cTnI peaked later, at 4.5 h (CI: 4.2 - 4.9 h). Peak concentrations for cTnT and cTnI were 2.5 ng/L, CI: 0 - 11.2 ng/L and 2.16 ng/L, CI: 0 - 22.7 ng/L, respectively. Additionally, we did not observe a systematic effect of sex and maturational status mediating cTn responses