Comportamiento de la frecuencia crítica de fusión ocular en atletas de carreras de la preselección nacional de atletismo

La correcta combinación del volumen y la intensidad de los estímulos de cargas de entrenamiento y el control del impacto que tienen en el organismo los deportistas constituyen dos de los aspectos que más interés despiertan en el deporte de alto rendimiento. La presente investigación tiene como describir el comportamiento de la FCFO antes y después de someterse a carreras en la pista, en tres macrociclos de los deportistas de las modalidades de carreras de la preselección nacional de atletismo y comprobar si estos valores se diferencian en función de los diferentes mesociclos de preparación y del género. El estudio se realizó con 38 deportistas (20 hombres y 18 mujeres) sometidos a 84 mediciones de la prueba Flicker o Fatigtest-USB, antes y después de la carga en tres macrociclos, en los que se incluían diversos mesociclos de preparación. Se realizó el análisis estadístico de los datos a través del SSPS, versión 20.0, específicamente la prueba ¨t¨ de Studenty el análisis de varianza. Los resultados demostraron que existe un aumento significativo de los valores de frecuencia crítica de fusión ocular y, por consiguiente, de los niveles de activación cortical después de la carga, sin existir diferencias significativas entre estos valores en los diferentes tipos de mesociclos, aunque sí existieron diferencias significativas entre los valores promedios de los hombres y de las mujeres antes y después de la carga; los valores manifestados por los hombres fueron inferiores. Estos análisis constituyeron referencias para la interpretación de los valores de la prueba y así poder mejorar en el proceso del control psicológico del entrenamiento y la asesoría a los entrenadores acerca de la adecuada asimilación de las cargas de entrenamiento.

A combinação correta do volume e intensidade dos estímulos das cargas de treinamento e o controle do impacto que elas têm sobre o organismo dos atletas representam dois dos aspectos que mais despertam o interesse pelo esporte de alto rendimento. O objetivo desta pesquisa é descrever o comportamento do FCFO antes e depois de se submeter a correr em pista, em três macrociclos dos atletas das modalidades de corrida da pré-seleção nacional de atletismo e verificar se estes valores diferem de acordo com os diferentes mesociclos de preparação e gênero. O estudo foi realizado com 38 atletas (20 homens e 18 mulheres) que foram submetidos a 84 medições do teste Flicker ou Fatigtest-USB, antes e depois da carga em três macrociclos, que incluíram diferentes mesociclos de preparação. A análise estatística dos dados foi realizada usando SSPS, versão 20.0, especificamente Studenty's ¨t¨ teste e análise de variância. Os resultados mostraram que há um aumento significativo nos valores da frequência crítica de fusão ocular e, consequentemente, nos níveis de ativação cortical após a carga, sem diferenças significativas entre estes valores nos diferentes tipos de mesócitos, embora houvesse diferenças significativas entre os valores médios de homens e mulheres antes e depois da carga; os valores relatados pelos homens eram menores. Estas análises constituíram referências para a interpretação dos valores do teste, a fim de melhorar no processo de controle psicológico do treinamento e aconselhamento aos treinadores sobre a assimilação adequada das cargas de treinamento.

The correct combination of the volume and intensity of the stimuli of training loads and the control of the impact that they have on the organism of the athletes constitute two of the aspects that awaken more interest in the high performance sport. The present research aims to describe the behavior of the critical eye-fusion frequency (FCFO in Spanish) before and after undergoing track races, in three macrocycles of athletes of the running modalities of the national athletics preselection and to check if these values differ according to the different mesocycles of preparation and gender. The study was carried out with 38 athletes (20 men and 18 women) subjected to 84 measurements of the Flicker or Fatigtest-USB, before and after the load in three macrocycles, which included different preparation mesocycles. Statistical analysis of the data was performed through SSPS, version 20.0, specifically Studenty's ¨t¨ test and analysis of variance. The results showed that there is a significant increase in the values of critical frequency of ocular fusion and, consequently, in the levels of cortical activation after the load, without significant differences between these values in the different types of mesocycles, although there were significant differences between the average values of men and women before and after the load; the values reported by men were lower. These analyses constituted references for the interpretation of the test values in order to improve in the process of psychological control of training and advice to trainers about the adequate assimilation of training loads.

The use of commercially available non-medical grade USB cameras for physician guided ENT out-patient self-examination during the COVID-19 pandemic

Objective@#To describe the use of commercially available, non-medical grade USB cameras in a non-contact examination of simple cases involving the ears, nose and oral cavity of patients during the COVID-19 pandemic @*Methods@#Design: Instrument innovation. Setting: Tertiary Government Training Hospital. Participants: Patients who consulted at the ENT-HNS outpatient department during the COVID-19 pandemic. @*Results@#Commercially available USB cameras were able to provide basic visualization of the ears, nose and oral cavity. The non-medical grade USB cameras captured lower quality images when compared to the medical grade endoscopes but provided enough visualization to aid in the examination and diagnosis of simple cases. There was a learning curve in using the set-up but patients were able to adjust well, taking an average time of 2.7 minutes to complete the examination. @*Conclusion@#Non-medical grade USB cameras may play a role in aiding otolaryngologists in examining simple cases during the COVID-19 pandemic. Integration of this system into current examination practices may offer an extra layer of protection for otolaryngologists and patients alike. However, the use of these instruments as part of regular ENT practice may be controversial and will need further study.

Design of personal health information acquisition terminal system / 医疗卫生装备

Objective To acquire the physiological parameters such as pulse,blood oxygen saturation and ECG to realize personal health information monitoring and tailored medical service.Methods A personal health information acquisition terminal was developed,which was composed of an information acquisition module,personal computer and system software.The information acquisition module was developed with USB interface and unified circuit mode.Health information was transmitted to the personal computer at real time with USB interface,and then stored by system software and uploaded to the database.Results The terminal gained advantages in design,convenience and practicability,which realized realtime acquisition,data storage,remote auxiliary diagnosis,printing and etc of personal health information,so that personal information realtime monitoring was implemented.Concluslon The terminal can be used for health information recording,storage,acquisition and analysis,and extends medical service of hospital.

USB Data Collection System Based on MCU C8051F340 / 医疗卫生装备

The characteristics of C8051F340 MCU and USB communication, and the design method of system's hardware and software structure are introduced briefly. The whole system is proved stable and reliable by experiment. The Universal Serial Bus (USB) communication technology has great value in course of system design and study.

Development of a Personal Health Record System Based on USB Flash Drive and Web Service / 대한의료정보학회지

OBJECTIVE: The development of information communication technology (ICT) and the demand for managing the healthy lives of individuals are accelerating the informatization of the health and medical field. Considering this environment and the needs of the individual, this paper has designed and developed a web and mobile storage device-based personal health record (PHR) system that individuals can manage by themselves anywhere, anytime, whether on-line or off-line. Based on the experience of implementing the system, its development method, results, and relevant technical issues are described. SYSTEM DESIGN AND DESCRIPTION: This system is implemented to manage PHR, including vital signs and ingested/consumed calories for a lifetime by connecting a PHR-integrated web server to each hospital's information system, and the PHR programs installed in the individual's PC or USB flash memory drive. To achieve this, an interface module, web server system, and PHR viewer program for individuals are developed. RESULTS: When it is off-line, the PHR program is operated to inquire the data saved in the DB, and the self-measured information can be inputted. When it is on-line, it calls the web service function to inquire the medical information, including hospital visit history, prescription history, diagnosis result, image inspection result and medical treatment result. CONCLUSION: This system connects home and mobile healthcare to hospitals but minimizes information leakage because the data is not accumulated. By loading a plug & play, PHR viewer to an easy-to-carry mobile storage device, the systems supports a sustainable health management.

Development of Portable Multi-function Heart-Sound Auscultating System / 医疗卫生装备

Objective To overcome the disadvantages of the traditional auscultating method and design the electro-auscultating visual system integrating the monitoring and recording functions.Methods The portable system consisted of the module pre-gathering and electro-auscultating heart-sound signal,the circuit of A/D converting and MCU,as well as the device of signal LCD-displaying in real-time and the USB mass storage device.Results Portable electro-auscultating system was realized,which integrated the functions of watching,monitoring and recording.Conclusion The portable system is more convenient for clinical doctors to get correct information from patients,benefiting to the clinical pathology-statistics and profound development of the related data.

Development of neuromuscular rehabilitation instrument based on USB / 医疗卫生装备

A neuromuscular rehabilitation instrument, with USB bus to supply power and transmit data, is developed to improve the existing product which has low data transmission rate and is at the high cost of battery. Its circuits, including the circuits for singlechip interface, power, EMG amplifiers and filters, MCU, electrode interface and stimulation, are designed. The software of singlechip and PC are also described. The system powering, data transmission, display and storage of EMG are realized. Experiments show that it is reliable.

Design of USB Bus power circuits for neuromuscular rehabilitator / 医疗卫生装备

This paper analyses the characteristics of USB bus power.Based on the power demand of the circuits for neuromuscular rehabilitator,power voltage transformation circuits are designed for the realization of USB bus power supply.

Development of central control system for computerized intermediate-frequency therapy apparatus / 医疗卫生装备

Computerized intermediate-frequency therapy apparatus is a kind of widely-used clinical equipment. This paper is to indicate the principle and design method of the central control system based on USB for computerized intermediate-frequency therapy apparatus. With this system, the labor intensity, work efficiency and therapeutic efficacy can all be improved.

Detection system of multi-channel physiological parameters of uterine cavity based on USB interface / 医疗卫生装备

USB interface chip PDIUSBD12 and Microchip's single chip processor PIC16F877 are applied to achieving computerized multi-channel data acquisition, and then a detection system of multi-channel physiological parameters of uterine cavity is designed on the basis of the above-mentioned. Being plug-and-play, real-time and general-purpose, this system can meet the requirement of medical research on the relationship between these parameters and diseases of uterine cavity.

Discussion on Realization Method of a Computer Controlling Two Laboratory Instruments / 医疗卫生装备

Objective To realize the simultaneous control of two laboratory instruments by a computer. Methods On the basis of analysing the mode of communication between computer and laboratory instrument, the author expanded the computer's COM interface through the USB / COM converter. Results The author realized a computer controlling MP280 CLIA chemiluminescence analyzer and anthos 2010 enzyme tester at the same time. Conclusion User can use computer's USB interface and USB / COM converter to achieve controlling multiple instruments and equipments at the same time, as long as the communication interface of equipment is open. This method has preferable potential application.

Development of nervous function stimulating system / 医疗卫生装备

Nervous function stimulating system is a stimulus delivery and experimental control software system for neuroscience.The purpose of this paper is to indicate the principle and design method of nervous function stimulating system based on USB Bus.It was designed for behavioral and physiological experiments using FMRI,ERP,MEG,reaction times,and single neuron recording.

Study of USB Device Driver for Embedded Medical Equipment Based on Linux / 医疗卫生装备

Objective To develop the USB device driver for embedded medical equipment based on Linux.Methods A Miniature Parameter Monitor based on embedded linux was designed.It used ARM9 microprocessor s3c2410 as main CPU of hardware control center,embedded linux OS as software development platform and had one USB interface.USB device driver's system-structure and programming methods were studied.Drive program applying to the specific platform is developed.Results This programming is greatly simplified compared to the old one.By testing,the system could mount USB flash disk automatically,exchange data accurately.The transmission speed was fast,reliable and stable.Conclusion The USB device driver can improve the speed and quality of the data exchange between the equipment and host computer as well as the equipment and function modules.Great storage capacity is realized and its hot plug is so convenience in using.

Development of Pilot Integrated Psychometric System / 医疗卫生装备

Pilot Integrated Psychometric System is a stimulus delivery and experimental control system for psychometrics. The purpose of this paper is to indicate the principle and design method of Pilot Integrated Psychometric System based on personal computer system. The system was designed for pilots' physiological experiments by using comprehensive professional tests. The principle and method of this system are also discussed.

C++—based realization of USB communication between host and embedded medical equipment / 医疗卫生装备

USB is a very popular interface in recent computer systems.USB communication enjoys great popularization with many advantages such as high velocity,high reliability and joint flexibility,which traditional RS232 communication,serial and parallel communication have not.This paper presents CH375 bus interface chips,the USB communication between PC and embedded medical equipment,and the relative procedure code.

Design of new multi-channel EEG signal acquisition system / 医疗卫生装备

A new multi-channel EEG signal acquisition system,which adopts Cypress's EZ-USB FX2 series USB as its micro-controller,is presented in this paper.The system employs AD620 and OP07 at the pre-amplifying stage and the following two amplifying stages respectively.Universal Series Bus(USB) technology is used to realize the real-time recording,displaying and tele-monitoring of EEG signal,which can also be stored in CF card after compression.The USB software developing tool is WinDriver.

Design of Holter system based on USB technology / 医疗卫生装备

According to the development of electronic devices and embedded system,a Holter system with high sampling efficiency and good performance is introduced in this paper.Besides,a compact type of ECG device is developed which can precisely record normal ECG,pacing ECG and dynamic ECG.This paper puts emphasis on such key aspects as hardware design with low power consumption,high-efficiency and real-time algorithm,magnitude storage devices and reliable playback interface in high speed.

Application of USB Bridge Chip to ECG Signal Sampling System / 医疗卫生装备

This paper describes the design of an ECG OEM module based on W78LE54 single chip.The module samples standard I,II and III lead ECG signals in 200Hz rate.The board communicates with computer through the Universal Serial Bus(USB) by using CP2101,a highly-integrated USB-to-UART bridge chip,which can realize PC peripheral's plug&play.

USB technology and its application in medicine / 医疗卫生装备

With a high speed and high versatility, USB has been the standard port between PC and peripheral equipment. USB can be widely used in Biomedical Engineering, though it is very difficult to develop. This paper is to indicate the principles and design methods of USB application software under Windows and WDM driver for USB device.

USB bus technology and its medical application / 医疗卫生装备

USB, with high speed and versatility, has been the standard port between the personal computer and the peripheral equipment. Being difficult to develop, USB has a brilliant future in the field of biomedical engineering. This paper introduces the principle and design method of the function firmware of USB.