151014 20251017144617.0 doi 10.3389/fphys.2021.706545 sideral 125695 ART-2021-125695 eng Sokas D. Detection of Walk Tests in Free-Living Activities Using a Wrist-Worn Device 2021 Access copy available to the general public Unrestricted Exercise testing to assess the response to physical rehabilitation or lifestyle interventions is administered in clinics thus at best can be repeated only few times a year. This study explores a novel approach to collecting information on functional performance through walk tests, e.g., a 6-min walk test (6MWT), unintentionally performed in free-living activities. Walk tests are detected in step data provided by a wrist-worn device. Only those events of minute-to-minute variation in walking cadence, which is equal or lower than the empirically determined maximal SD (e.g., 5-steps), are considered as walk test candidates. Out of detected walk tests within the non-overlapping sliding time interval (e.g., 1-week), the one with the largest number of steps is chosen as the most representative. This approach is studied on a cohort of 99 subjects, assigned to the groups of patients with cardiovascular disease (CVD) and healthy subjects below and over 40-years-old, who were asked to wear the device while maintaining their usual physical activity regimen. The total wear time was 8, 864 subject-days after excluding the intervals of occasionally discontinued monitoring. About 82% (23/28) of patients with CVD and 88% (21/24) of healthy subjects over 40-years-old had at least a single 6MWT over the 1st month of monitoring. About 52% of patients with CVD (12/23) and 91% (19/21) of healthy subjects over 40-years-old exceeded 500 m. Patients with CVD, on average, walked 46 m shorter 6MWT distance (p = 0.04) compared to healthy subjects. Unintentional walk testing is feasible and could be valuable for repeated assessment of functional performance outside the clinical setting. © Copyright © 2021 Sokas, Paliakaite, Rapalis, Marozas, Bailón and Petrenas. info:eu-repo/grantAgreement/ES/DGA-FSE/T39-20R-BSICoS group info:eu-repo/grantAgreement/ES/MINECO-FEDER/RTI2018-097723-B-I00 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 4.755 2021 PHYSIOLOGY 20 / 81 = 0.247 2021 Q1 T1 1.126 2021 Physiology (medical) 2021 Q1 Physiology 2021 Q1 6.6 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Paliakaite B. Rapalis A. Marozas V. Bailón R. Universidad de Zaragoza (orcid)0000-0003-1272-0550 Petrenas A. 5008 800 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Teoría Señal y Comunicac. 12 (2021), 706545 [13 pp.] Front. physiol. Frontiers in physiology 1664-042X 2663639 http://zaguan.unizar.es/record/151014/files/texto_completo.pdf Versión publicada 2390535 http://zaguan.unizar.es/record/151014/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:151014 articulos driver 2025-10-17-14:20:04 ARTICLE