https://www.rmib.mx/index.php/rmib <center> <p><strong>MISSION</strong></p> <p align="left"><em>La Revista Mexicana de Ingeniería Biomédica</em> (The Mexican Journal of Biomedical Engineering, RMIB, for its Spanish acronym) is a publication oriented to the dissemination of papers of the Mexican and international scientific community whose lines of research are aligned to the improvement of the quality of life through engineering techniques.</p> <p align="left">The papers that are considered for being published in the RMIB must be original, unpublished, and first rate, and they can cover the areas of Medical Instrumentation, Biomedical Signals, Medical Information Technology, Biomaterials, Clinical Engineering, Physiological Models, and Medical Imaging as well as lines of research related to various branches of engineering applied to the health sciences.</p> <p align="left">The RMIB is an electronic publication continuously released since 2020, structured into three volumes (January, May, September) by the Mexican Society of Biomedical Engineering, founded since 1979. It publishes articles in spanish and english and is aimed at academics, researchers and professionals interested in the subspecialties of Biomedical Engineering.</p> <p><strong>INDEXES</strong></p> <p><em>La Revista Mexicana de Ingeniería Biomédica</em> is a quarterly publication, and it is found in the following indexes:</p> <p><img src="https://www.rmib.mx/public/site/images/administrador/índices_y_repositorios_(1100_×_1000 px).jpg" /></p> </center> Sociedad Mexicana de Ingeniería Biomédica A.C. en-US Revista Mexicana de Ingenieria Biomedica 0188-9532 <p>Upon acceptance of an article in the RMIB, corresponding authors will be asked to fulfill and sign the copyright and the journal publishing agreement, which will allow the RMIB authorization to publish this document in any media without limitations and without any cost. Authors may reuse parts of the paper in other documents and reproduce part or all of it for their personal use as long as a bibliographic reference is made to the RMIB. However written permission of the Publisher is required for resale or distribution outside the corresponding author institution and for all other derivative works, including compilations and translations.</p> https://www.rmib.mx/index.php/rmib/article/view/1502 <p>Accurate estimation of energy expenditure and gas exchange dynamics is essential for health monitoring and performance optimization. This study addresses the limitations of traditional systems by developing a portable, non-invasive, and real-time solution that correlates physiological signals with energy metabolism. The proposed system estimates energy expenditure and metabolic state using oxygen and carbon dioxide flows derived from non-invasive variables such as respiratory ventilation and heart rate. It utilizes Bluetooth Low Energy (BLE) for wireless communication and includes user-friendly interfaces for smartphones and computers to facilitate data visualization and recording. Calibration is performed using a calorimeter, resulting in an average estimation error of 14.83%. The system demonstrates reliable performance under various conditions, providing real-time estimations of energy expenditure and gas exchange. Its portability and ergonomic design improve usability; however, precise calibration remains essential, and broader testing is required to validate robustness. A key advantage of the system is its ability to operate entirely offline, relying solely on BLE for data transmission, making it suitable for real-time monitoring in diverse environments.</p> Gerardo Realpe Alvarez Jose Miguel Esteban Emilio Carlos Alejandro Copyright (c) 2025 Revista Mexicana de Ingenieria Biomedica https://creativecommons.org/licenses/by-nc/4.0/ 2025-12-18 2025-12-18 46 3 e1502 e1502 10.17488/RMIB.46.3.1502 https://www.rmib.mx/index.php/rmib/article/view/1494 <p>This study investigates the effects of Artificial Proprioception (AP) on postural stability in transtibial amputees using a non-invasive mechatronic system. Eight participants with unilateral lower-limb amputation underwent stabilometric evaluations under four visual and sensory conditions (with/without AP, eyes open/closed) using a baropodometric platform. The AP system translated plantar pressure from instrumented insoles into vibrotactile feedback via actuators positioned on dermatome-mapped regions of the thigh. Time-series analyses, pressure maps, and center of pressure (COP) dynamics were assessed through metrics such as displacement, velocity, sway area, and Romberg indices. While statistical significance was not achieved, descriptive trends revealed a reduction in COP variability, particularly in eyes-closed conditions, suggesting enhanced postural control. The system’s proportional feedback and anatomical mapping may facilitate improved somatosensory integration and compensatory motor strategies. These findings support AP as a promising tool for balance rehabilitation in lower-limb amputees, warranting further study with larger cohorts and dynamic tasks.</p> Octavio Diaz-Hernandez Copyright (c) 2025 Revista Mexicana de Ingenieria Biomedica https://creativecommons.org/licenses/by-nc/4.0/ 2025-12-18 2025-12-18 46 3 10.17488/RMIB.46.3.1494