Effects of Kinesiotape taping on plantar pressure and impact acceleration during walking

Objectives: The aim of this study was to analyse the plantar pressure pattern, contact time, stride rate and impact acceleration in the shank during walking with and without Kinesio Tape (KT®) placed on two muscle groups: Peroneus and Triceps surae. Methods: 29 subjects (12 men, 17 women) participated in the study. KT® was placed on the triceps surae and peroneus and participants walked at two different speeds (V1: 0.73 m/s; V2:1.30 m/s) with and without KT®. The pedobarographic system Biofoot IBV® 6.0 was used to analyse plantar pressure (mean peak pressure [kPa]) in 5 foot areas and the kinematic variables of the study (contact time [s]; stride rate [steps/min]). One uni-axial accelerometer (Sportmetrics®) was placed on the shank for the impact loading analysis. Results: No significant difference was observed on plantar pressure (p>0.05), and kinematics variables (p>0.05) between the KT® and noKT® conditions. However, results revealed a relationship of dependence between speed and plantar pressure and kinematics parameters, especially under the rearfoot and the medial part of the foot (p<0.005). Conclusion: The results suggest that application of KT® on peroneus and triceps surae does not have a direct effect on the kinematic pattern of healthy individuals during walking

Un composite nuevo de fosfato cálcico-silicato cálcico para la regeneración ósea : caracterización y comportamiento

Tesis inédita de la Universidad Complutense de Madrid, Facultad de Odontología, Departamento de Estomatología III (Medicina y Cirugía Bucofacial), leída el 11-03-2014Depto. de Especialidades Clínicas OdontológicasFac. de OdontologíaTRUEunpu

Accretion and photodesorption of CO ice as a function of the incident angle of deposition

Non-thermal desorption of inter- and circum-stellar ice mantles on dust grains, in particular ultraviolet photon-induced desorption, has gained importance in recent years. These processes may account for the observed gas phase abundances of molecules like CO toward cold interstellar clouds. Ice mantle growth results from gas molecules impinging on the dust from all directions and incidence angles. Nevertheless, the effect of the incident angle for deposition on ice photo-desorption rate has not been studied. This work explores the impact on the accretion and photodesorption rates of the incidence angle of CO gas molecules with the cold surface during deposition of a CO ice layer. Infrared spectroscopy monitored CO ice upon deposition at different angles, ultraviolet-irradiation, and subsequent warm-up. Vacuum-ultraviolet spectroscopy and a Ni-mesh measured the emission of the ultraviolet lamp. Molecules ejected from the ice to the gas during irradiation or warm-up were characterized by a quadrupole mass spectrometer. The photodesorption rate of CO ice deposited at 11 K and different incident angles was rather stable between 0 and 45$^{\circ}$. A maximum in the CO photodesorption rate appeared around 70$^{\circ}$-incidence deposition angle. The same deposition angle leads to the maximum surface area of water ice. Although this study of the surface area could not be performed for CO ice, the similar angle dependence in the photodesorption and the ice surface area suggests that they are closely related. Further evidence for a dependence of CO ice morphology on deposition angle is provided by thermal desorption of CO ice experiments

Long-term effects of graduated compression stockings on cardiorespiratory performance

ABSTRACT: The use of graduated compression stockings (GCS) in sport has been increasing in the last years due to their potential positive effects for athletes. However, there is little evidence to support whether these types of garments actually improve cardiorespiratory performance. The aim of this study was to examine the cardiorespiratory responses of GCS during running after three weeks of regular use. Twenty recreational runners performed three tests on different days: test 1) ¿ a 5-min maximal effort run in order to determine the participants¿ maximal aerobic speed; and tests 2) and 3) ¿ a fatigue running test of 30 minutes at 80% of their maximal aerobic speed with either GCS or PLACEBO stockings at random. Cardiorespiratory parameters (minute ventilation, heart rate, relative oxygen consumption, relative carbon dioxide production, ventilatory equivalents for oxygen and carbon dioxide, and oxygen pulse) were measured. Before each test in the laboratory, the participants trained with the randomly assigned stockings (GCS or PLACEBO) for three weeks. No significant differences between GCS and PLACEBO were found in any of the cardiorespiratory parameters. In conclusion, the present study provides evidence that running with GCS for three weeks does not influence cardiorespiratory parameters in recreational runners

Estudio preliminar de la activación neuromuscular corriendo descalzo y calzado = Preliminary study of the neuromuscular activation during barefoot and shod running.

El objetivo del presente estudio preliminar fue comparar la actividad muscular de los músculos tibial anterior, peroneo lateral largo, gastrocnemio medial y gastrocnemio lateral entre la carrera con y sin calzado, y la influencia de la fatiga. 7 participantes realizaron una carrera de fatiga de 20 minutos al 75% de su velocidad aeróbica máxima en cinta con 1% de pendiente. Se midió la actividad mioeléctrica de los músculos antes mencionados tanto antes como después de la prueba de fatiga en dos condiciones: con calzado y sin calzado. Los resultados mostraron una mayor actividad del tibial anterior durante la carrera en fatiga descalzo respecto a la carrera calzado y una mayor actividad del peroneo lateral largo durante la carrera sin fatiga descalzo. Por otra parte, también se encontró una menor actividad del gastrocnemio medial durante la carrera con zapatillas y en fatiga respecto a la carrera sin fatiga. ABSTRACT The aim of this preliminary study was to compare the influence of footwear and 13 the fatigue state on the muscle activity of the tibialis anterior, peroneus longus, gastrocnemius medialis and gastrocnemius lateralis. For this purpose, 7 participants ran a 20-min fatiguing run on a treadmill at 1% slope at 75% of their individual maximal aerobic speed. Muscle activation was measured twice during 30 seconds before and after the fatiguing run while running shod and barefoot. Before the fatiguing run, running barefoot led to a greater activation of the peroneus longus compared to running shod. When running fatigued, running barefoot also increased the activation of the tibialis anterior compared to running shod. Moreover, the fatigue state decreased the gastrocnemius medialis activity when running shod. The aim of this preliminary study was to compare the influence of footwear and the fatigue state on the muscle activity of the tibialis anterior, peroneus longus, gastrocnemius medialis and gastrocnemius lateralis. For this purpose, 7 participants ran a 20-min fatiguing run on a treadmill at 1% slope at 75% of their individual maximal aerobic speed. Muscle activation was measured twice during 30 seconds before and after the fatiguing run while running shod and barefoot. Before the fatiguing run, running barefoot led to a greater activation of the peroneus longus compared to running shod. When running fatigued, running barefoot also increased the activation of the tibialis anterior compared to running shod. Moreover, the fatigue state decreased the gastrocnemius medialis activity when running shod

Assessment of a mattress with phase change materials using a thermal and perception test

Mattresses composed by phase change materials (PCMs) may improve the thermoregulation of the human body. The aim of the study was to analyze the thermoregulatory efficiency of a PCMs and a conventional mattresses via the evaluation of the skin temperature, thermal comfort and thermal perception. Twenty participants lay on a PCMs and a conventional mattress for 20 minutes in each mattress on the same day. Skin temperature of the back of the participants and temperature of the sheet of the mattresses were measured before and immediately after lying on each mattress. Thermal comfort and thermal perception were also reported during the last minute of the lying test. The PCMs mattress resulted in a lower increase in skin temperature (0.3 - 1.0°C, p=0.002 and ES=1.4) and a greater increase of the sheet temperature (0.2 - 1.6°C, p=0.02 and ES=0.8). No differences in thermal comfort and thermal perception were observed between mattresses (p>0.05 and ES<0.8). The analysis of the superficial temperature (skin, sheet) was an adequate tool to identify differences in the thermoregulatory efficiency of different mattresses. The use of PCMs in mattresses improved the heat dissipation of the human body during lying in a proportion between 2.7% and 25.6%. However, the thermoregulatory differences were not big enough to alter the thermal comfort and thermal perception of the participants after 20 minutes of test.SIThe contribution of two of the authors were funded with doctoral fellowships (FPU) from the Spanish Ministry of Education. Thanks are given to all participants who volunteered for this study. We also acknowledge D. Oscar Calvo (AITEX – Textile Research Institute) for their collaboration and support in the stud

Efectos de los soportes plantares sobre la termorregulación de las plantas de los pies durante la carrera

Existe una gran controversia acerca de si el uso de soportes plantares puede reducir el riesgo de padecer lesiones por sobreuso en corredores. Se ha observado una relación entre las cargas plantares y la temperatura superficial de los pies, por lo que el tipo de soporte plantar podría afectar a la temperatura de la planta del pie. El objetivo del estudio fue, analizar los efectos de los soportes plantares en la temperatura superficial, así como en la simetría térmica, de las plantas de los pies tras la carrera. 12 corredores entrenados realizaron 3 test de 30 minutos de carrera (10 de calentamiento y 20 de prueba al 80% de su Velocidad Aeróbica Máxima) con soporte control, con soporte prefabricado y con soporte personalizado. No se encontraron diferencias entre ninguna de las condiciones (p>0.05). Tampoco se encontraron asimetrías térmicas entre el pie derecho y el pie izquierdo (p>0.05) por el uso de soportes plantares. En conclusión, el uso de soportes plantares durante la carrera no afecta a la temperatura de las plantas de los pies, por lo que no comportan beneficios, pero tampoco resultan inconvenientes desde el punto de vista de térmico

Plan de negocios - Hand-E

El presente documento es un plan de negocio diseñado alrededor de la idea y concepto Hand E, el proyecto nace principalmente con la idea de poder dinamizar y agilizar los procesos de entrada y salida en establecimientos, como también de establecer un sistema de pago y transacciones en los respectivos puntos comerciales mediante un accesorio portátil y compacto, como lo es, una manilla. El proyecto se desarrolló bajo una investigación de diferentes características como el producto, sector económico, segmento objetivo, precio óptimo en conjunto con una propuesta estratégica de marketing en la cual resaltamos las herramientas más oportunas y más viables en el actual mercado para dar exposición a un emprendimiento nuevo y relevante como lo es Hand-E; por último, analizamos y estructuramos un plan financiero básico para poder tener una base y minimizar el riesgo en el mercado real. Este proyecto pone a disposición una idea compacta que enfatiza en la adaptabilidad de nuestro modelo de negocio de la mano de la tecnología en diversas situaciones de la vida diaria, apoyándose en ella y brindando soluciones diferentes al mercado actual mediante la implementación de un producto que hará las veces de mecanismo/opción de pago y demás funcionalidades explicadas a continuaciónThis document is a business plan designed around the idea and concept Hand-E, the project was born mainly with the idea of being able to streamline the entry and exit processes in establishments, as well as to establish a payment and transaction system at the respective points of sale by means of a portable and compact accessory, such as a handle. The project was developed under an investigation of different characteristics such as the product, economic sector, target segment, optimal price in conjunction with a strategic marketing proposal in which we highlight the most opportune and most viable tools in the current market to give exposure to a new and relevant entrepreneurship such as Hand-E; Finally, we analyze and structure a basic financial plan in order to have a base and minimize risk in the real market. This project makes available a compact idea that emphasizes the adaptability of our business model hand in hand with technology in various situations of daily life, relying on it and providing different solutions to the current market through the implementation of a product that will use the times of payment mechanism / option and other functionalities explained below.Profesional en Marketing y Logístic

Hypercapnia in hospitalized children and adolescents with anorexia nervosa as a predictive marker for readmission: a prospective study

To determine whether hypercapnia is associated with risk of hospital readmission related to anorexia nervosa (AN) in children and adolescents. Methods We performed a prospective study of patients≤18 years old admitted due to AN decompensation from November 2018 to October 2019. Both subtypes of AN, restricting subtype (AN-R) and binge-eating/purging subtype (AN-BP), were included. Study participants were evaluated upon admission, at discharge and six months after discharge. T-tests or Mann–Whitney U tests was used to compare means values. Pearson or Spearman correlations were used to measure the association between two variables. Logistic regression models were developed to evaluate the relationship between scoring methods and readmission. Results Of the 154 persons admitted during the study period, 131 met the inclusion criteria. Median age was 15.1 years. At admission, 71% of participants were malnourished and 33 (25%) had been previously admitted. We observed a marked decrease in venous pH and stable pCO2 elevation during follow-up period. Hypercapnia at discharge was associated with a twofold increased likelihood of readmission and the odds of readmission increased as discharge pCO2 rose. These fndings did not depend on AN subtype or participant sex. Electrolytes persisted within the normal range. Conclusion Hypercapnia and respiratory acidosis are common alterations in children and adolescents hospitalized due to AN decompensation. Hypercapnia persists for at least 6 months after discharge despite clinical improvement and is associated with higher odds of readmission. This is the frst study to identify an abnormal laboratory fnding as a potential predictor of readmission in AN. Level of evidence IV: Multiple time series without interventio

The International Database of Central Arterial Properties for Risk Stratification: Research Objectives and Baseline Characteristics of Participants

OBJECTIVE To address to what extent central hemodynamic measurements, improve risk stratification, and determine outcome-based diagnostic thresholds, we constructed the International Database of Central Arterial Properties for Risk Stratification (IDCARS), allowing a participant-level meta-analysis. The purpose of this article was to describe the characteristics of IDCARS participants and to highlight research perspectives. METHODS Longitudinal or cross-sectional cohort studies with central blood pressure measured with the SphygmoCor devices and software were included. RESULTS The database included 10,930 subjects (54.8% women; median age 46.0 years) from 13 studies in Europe, Africa, Asia, and South America. The prevalence of office hypertension was 4,446 (40.1%), of which 2,713 (61.0%) were treated, and of diabetes mellitus was 629 (5.8%). The peripheral and central systolic/diastolic blood pressure averaged 129.5/78.7 mm Hg and 118.2/79.7 mm Hg, respectively. Mean aortic pulse wave velocity was 7.3 m per seconds. Among 6,871 participants enrolled in 9 longitudinal studies, the median follow-up was 4.2 years (5th–95th percentile interval, 1.3–12.2 years). During 38,957 person-years of follow-up, 339 participants experienced a composite cardiovascular event and 212 died, 67 of cardiovascular disease. CONCLUSIONS IDCARS will provide a unique opportunity to investigate hypotheses on central hemodynamic measurements that could not reliably be studied in individual studies. The results of these analyses might inform guidelines and be of help to clinicians involved in the management of patients with suspected or established hypertension