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Measuring of pulse rate using smartphone
Víteček, Jiří ; Smital, Lukáš (referee) ; Němcová, Andrea (advisor)
This bachelor thesis deals with the possibility to measure heart rate using a smartphone. Today, many people own a smartphone. Newer devices can record various data thanks to its sensors and additional equipment. The current trend is to use the data so that the mobile phone can replace other devices, e.g. navigation, camera, camcorder or multimedia player. Recently, mobile phones have also been used in the field of medicine and, thanks to their mass extension, there is the potential to use them to detect health problems early on. With a functional mobile application, testing becomes cheap, fast, always available and easy to the general public. The beginning of the thesis describes the basic facts about physiology and anatomy of the heart, and circulatory system. Methods of heart rate monitoring using standard devices and smartphones, and measurement history are discussed as well. Two proposed methods using the smartphone's microphone and accelerometer are described below. For each method, testing and statistical evaluation are described. The thesis confirmed the possibility of using these methods for relatively accurate pulse rate measurement, even under different measuring conditions. Created applications with graphical user interfaces are described in the thesis including examples. The last part contains a comparison of methods, recommendations for measurement and final evaluation.
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Multifunctional monitoring belt
Dítě, Martin ; Milek, Jakub (referee) ; Harabiš, Vratislav (advisor)
The aim of this thesis is to develop a wireless monitoring belt based on literature review. The belt will be capable of scanning heart rate, respiratory rate, body temperature, motion, position, and falling of the user. Another aim is to also design a software for data reception and analysis focusing on pulse, respiratory rate, and temperature alarms.
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Analysis of pulse wave velocity variability
Benešová, Lenka ; Kozumplík, Jiří (referee) ; Svačinová, Jana (advisor)
This diploma thesis deals with the variability of pulse wave velocity. It studies the variability of cardiovascular signals. It presents the research of measurement of pulse wave velocity and its analysis in physiology and pathological physiology. Applies spectral analysis in Matlab to a data set. It evaluates and reviews the results of this analysis
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Measurement of HRV and consideration of physical load
Vyskočilová, Martina ; Kolář, Radim (referee) ; Janoušek, Oto (advisor)
This work examines the influence of load on heart rate variability, and a description of the mechanisms influencing changes in heart rate, response to load. There is a review of methods used to assess heart rate variability. In another part the data of the measurement are processed and described the proposed method using spectral power, generated by the algorithm description, presentation of results.
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Analysis of psychotherapy sessions with GAI via computer methods
Natovová, Ludmila ; Šípek, Jiří (advisor) ; Uhrová, Eva (referee) ; Niederlová, Markéta (referee)
The aim of the presented dissertation thesis is to find out the answer for the question of how it is possible to process and evaluate by computer methods of data coming from psychotherapy sessions using the method of Guided Affective Imagery. The Guided Affective Imagery is a relatively young psychotherapy approach based on the European tradition of psychodynamic psychology which presumes that in assignment relatively indefinite motive in imagination during day dream comes to manifestation of a client's unconsciousness contents and conflicts, defensive mechanisms, resistance, motives and fantasy. The biofeedback device by which was the rate of heartbeat used during the whole session and computer programs for quantitative text analysis were used for verifying the usage of computer methods for the sessions' analysis. The quantitative text analysis focused on identification of primarily and secondarily measure of the item process in the preliminary part of a session, during the phase of imagination and at the final part of the session by two code systems. In a certain way the results indicate complementary progress of changes in the primary and secondary process when the highest representation of secondary process expressions was identified in the introductory part of the session whereas the highest...
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Physiological response to adventure activity
Řezník, Ondřej ; Psohlavec, Lukáš (advisor) ; Baláš, Jiří (referee)
Objectives: The aim of this study was to investigate the effect of height on the physiological response of the body and walking speed during challenge activity. Methods: The study included 27 subjects, with an average age of 23±2, who were students of the Faculty of Physical Education and Sport (FTVS) at Charles University. The participants walked for 4 minutes over a low obstacle and 4 minutes over a high obstacle at their own pace, followed by 4 minutes over a low obstacle at a specified speed. The monitored parameters were heart rate (HR) and speed (V). Results: The average HR during walking over a low obstacle at the specified speed was 100 beats per minute (σ=12.335), and the average speed was 0.272 (σ=0.221). During walking over a high obstacle, the HR was 133 beats per minute (σ=16.125). During walking over a low obstacle at their own pace, the average HR was 111 beats per minute (σ=13.416), and the average speed was 0.706 (σ=0.269). Conclusion: Walking at height reflects the subjectively perceived risk through physiological responses. The height of the obstacle, which induces a subjectively perceived risk, increases the heart rate by 33 %. The walking speed decreased by an average of 0.434 m/s on the high obstacle. Kewords: adventure education, risk, heart rate, stress.
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Interface for plethysmographic sensor
Špánik, Šimon ; Barcík, Peter (referee) ; Kolka, Zdeněk (advisor)
The bachelor's thesis deals with the topic of photoplethysmography and the signal produced by the photoplethysmographic sensor. The goal is to design a laboratory device that would serve as an interface between a photoplethysmographic sensor and a computer. The work describes the anatomy and function of the human heart, the principle of photoplethysmography, and the properties of the sensor in terms of input and output signals. Also presented here is the method of powering and filtering the relevant circuits in the form of an additional printed circuit board for a standard Arduino microprocessor module, which is powered by USB. Furthermore, in the work, it is possible to find a solution to the influence of unwanted signals using filter analog circuits and the minimization of the measured signal's own noise, which prevents the signal from continuous values to discrete time and subsequent storage using a computer application on the data storage for subsequent signal processing.
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Comparison of the Czech and Norwegian models of training preparation of national men's rowing teams
Fleissner, Jan ; Macas, Tomáš (advisor) ; Koudela, Filip (referee)
Title: Comparison of the Czech and Norwegian models of training preparation of national men's rowing teams Aims: To create an inspiring source of information for coaches and competitors based on the differences between the Norwegian and Czech models of sports training in rowing. This study should give coaches and athletes insight into the current sports training of the world's best rowers and provide a model for creating training plans. Methods: The present study is a comparative review aimed at mapping and comparing some of the performance factors in rowing. The research data is a record of training models of the Norwegian and Czech national men's rowing teams. In order to explore the given question, it was necessary to study a large number of different sources and professional publications that could be traced and studied in available databases and libraries, as well as records of racing teams and coaches working in the field of professional sport. The Norwegian and Czech training models are compared based on chosen parameters. The parameters of comparison are the number of training intensity zones used by each team and the difference in the percentage of training intensity zones per annual training cycle. The following attribute observed was the annual training volumes. Last but not least, other...
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Complete implementation of pulse oximeter
Doležal, Lukáš ; Kaller, Ondřej (referee) ; Šotner, Roman (advisor)
This thesis deals with the design of a pulse oximeter. The resulting device allows to measure human blood oxygen saturation and heart rate in a non-invasive way. Easy portability is enabled by battery power supply and the used colour graphical display ensures clear display of the measured data. The paper describes in general terms the principle of pulse oximetry, a description of the chosen electronic components and the firmware developed to ensure the device's operation. Verification of correct operation was performed by comparing the measurements with similar devices available on the market.
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