bachelorThesis
Evaluación de métodos para el monitoreo del nivel de fatiga basado en variables cinemáticas y fisiológicas durante entrenamiento en banda sin fin
Autor
Ochoa Salamanca, María Alejandra
Institución
Resumen
Cardiovascular disease (CVD) is the leading cause of death in the world. Available studies support the role of comprehensive cardiac rehabilitation (CR) in patients with heart disease, reducing the mortality rate, morbidity, disability, improving the quality of life of patients, being defined as a program guided to training on the importance health care, including diet, medication, and exercise routines. For the exercises used in cardiac rehabilitation, it is necessary to avoid overtraining in patients, which is measured according to the level of fatigue. Measuring fatigue during exercise is a highly used process in physical rehabilitation. Currently, the way to quantify fatigue is performed using the Borg scale (effort perceived by the patient), which largely depends on the patient's criteria. On the other hand, a more accurate method is the measurement of the blood lactate level, which implies an invasive measurement. The objective of this project is to implement a new, low-cost and portable method to monitor patients during physical therapy, avoiding their overtraining. The project is divided into 5 stages: the first is based on the bibliographic review for the development of the state of the art, which is focused on methods of estimating fatigue, in the second stage the development of the protocol necessary for the start-up which is the third stage. For the fourth stage, with the information collected from the tests, it is necessary to process the data, which will be statistically analyzed, this being the last stage. This document presents the development of new methods of monitoring parameters related to fatigue, as a support in physical rehabilitation sessions, in this work a preliminary evaluation of walking parameters is made, such as: walking speed, angle of hip and knee movement, which show a progressive decrease as physiological and subjective measures such as blood lactate and the Borg scale increase, demonstrating its relationship with fatigue caused by physical exercise that gradually increases in intensity. As a result, the final protocol showed high functionality, where when monitoring the physiological parameters, they presented an increasing linear average behavior of the Borg scale and blood lactate, in addition to having a decrease in the muscular electrical activity of the muscles most involved in gait, especially of the anterior tibial muscle and gastrocnemius. Regarding the kinematic parameters, the position of the center of mass showed a greater variation as the intensity of the exercise increases, having a p value of 0.17, verifying the null hypothesis that, with greater fatigue, the movement of the center mass increases.