2026-05-29T22:24:44Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/344062026-02-03T11:28:20Zcom_10630_2254col_10630_37953

Inertial Sensors Embedded in Smartphones as a Tool for Fatigue Assessment Based on Acceleration in Survivors of Breast Cancer. Cuesta-Vargas, Antonio Pajares, Bella Trinidad-Fernández, Manuel Alba-Conejo, Emilio Roldán-Jiménez, Cristina Mamas - Cáncer - Ejercicios terapéuticos Ejercicio físico - Uso terapéutico Background. Cancer-related fatigue is a symptom commonly reported in survivors of breast cancer and is the most variable symptom. Besides questionnaires like PIPER to assess cancer-related fatigue, there is a need to objectively measure fatigue. Objective. The aim of this study was to assess the physiological dimension of fatigue based on acceleration during a 30-second maximal sit-to-stand test. Design. This was a cross-sectional study. Methods. Linear acceleration from a smartphone placed on the sternum was recorded in 70 survivors of breast cancer. Fourth-degree polynomial adjustment from the acceleration signal to the vertical and anterior-posterior axis was calculated. The fatigue temporal cutoff point was detected as a change in the curve slope of the first maximum point of acceleration. Results. Women were aged 51.8 (8.9) years with a body mass index of 25.4 (5.1) Kg/m 2 . They performed 23.6 (6.57) number of repetitions. The mean fatigue cut-off point from the total sample was 10.2 (3.1) seconds. Limitations. Further research should employ time-prolonged tests to study acceleration behavior beyond 30 seconds as well as include a physiological criterion that justifies the nonlinear saturation of the acceleration-based criterion. Conclusions. This study assessed fatigue through a low-cost and easy-to-use methodology during a functional and widely used test such as 30-second maximal sit-to-stand. This would allow clinicians to assess fatigue in a short-effort exercise to individualize exercise prescription dose, measure changes during intervention, and track fatigue objectively throughout survivorship 2024-10-07T09:11:10Z 2024-10-07T09:11:10Z 2020 journal article Cuesta-Vargas AI, Pajares B, Trinidad-Fernandez M, Alba E, Roldan-Jiménez C. Inertial sensors embedded in smartphones as a tool for fatigue assessment based on acceleration in survivors of breast cancer. Phys Ther. 2020;100:447–456 https://hdl.handle.net/10630/34406 10.1093/ptj/pzz173 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional OXFORD UNIV PRESS INC