000160871 001__ 160871
000160871 005__ 20251017144554.0
000160871 0247_ $$2doi$$a10.3390/s25082480
000160871 0248_ $$2sideral$$a144045
000160871 037__ $$aART-2025-144045
000160871 041__ $$aeng
000160871 100__ $$aEchevarría-Polo, Marcos$$uUniversidad de Zaragoza
000160871 245__ $$aVariability and reliability of the Axivity AX6 accelerometer in technical and human motion conditions
000160871 260__ $$c2025
000160871 5060_ $$aAccess copy available to the general public$$fUnrestricted
000160871 5203_ $$aThis study aimed to evaluate the intra- and inter-instrument variability and reliability of the Axivity AX6 accelerometer under controlled technical conditions and human motion scenarios. In the first experiment, 12 accelerometers were affixed to a vibration platform and tested at four frequencies (2.2, 3.2, 6.5, and 9.4 Hz) along three axes to assess frequency- and axis-dependent variability. In the second experiment, four AX6 accelerometers were simultaneously placed on a subject’s wrist and tested under four human motion conditions (walking at 4 km·h−1 and 6 km·h−1 and running at 8 km·h−1 and 10 km·h−1). Results demonstrated low intra- and inter-instrument variability (CVintra: 3.3–4.5%; CVinter: 6.3–7.7%) with high reliability (ICC = 0.98). Similar results were observed in human motion conditions (CVintra: 5.3–8.8%; CVinter: 7.1–10.4%), with ICC values of 0.98 for combined devices, and 0.99 for each device individually. Despite statistically significant differences (p < 0.05) between devices in human motion all conditions, the variations remained below the minimal clinically significant difference threshold. These findings indicate that under technical conditions on a vibrating platform, and within the range of typical human accelerations, the Axivity AX6 is a reliable tool for measuring accelerations representative of physical activity. However, further research is necessary to validate its performance under free-living conditions.
000160871 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T39-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2022-140556OB-I00$$9info:eu-repo/grantAgreement/EUR/MICINN/TED2021-130459B-I00
000160871 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000160871 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000160871 700__ $$aMarín, Pedro J.
000160871 700__ $$0(orcid)0000-0002-1960-407X$$aPueyo, Esther$$uUniversidad de Zaragoza
000160871 700__ $$aRamos Maqueda, Javier$$uUniversidad de Zaragoza
000160871 700__ $$0(orcid)0000-0001-8374-9081$$aGaratachea, Nuria$$uUniversidad de Zaragoza
000160871 7102_ $$11006$$2245$$aUniversidad de Zaragoza$$bDpto. Fisiatría y Enfermería$$cÁrea Educación Física y Depor.
000160871 7102_ $$11007$$2610$$aUniversidad de Zaragoza$$bDpto. Medicina, Psiqu. y Derm.$$cArea Medicina
000160871 7102_ $$15008$$2800$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Teoría Señal y Comunicac.
000160871 773__ $$g25, 8 (2025), 2480 [11 pp.]$$pSensors$$tSensors$$x1424-8220
000160871 8564_ $$s1552153$$uhttps://zaguan.unizar.es/record/160871/files/texto_completo.pdf$$yVersión publicada
000160871 8564_ $$s2493976$$uhttps://zaguan.unizar.es/record/160871/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000160871 909CO $$ooai:zaguan.unizar.es:160871$$particulos$$pdriver
000160871 951__ $$a2025-10-17-14:12:32
000160871 980__ $$aARTICLE