Caputo Eduardo L, Feter Natan, Alberton Cristine L, Leite Jayne S, Rodrigues Alysson N, Dumith Samuel de C, Silva Marcelo C da
Postgraduate Program in Physical Education, Federal University of Pelotas, Pelotas, Brazil.
Postgraduate Program in Public Health, Federal University of Rio Grande, Rio Grande, Brazil.
Res Sports Med. 2022 May-Jun;30(3):264-271. doi: 10.1080/15438627.2021.1899919. Epub 2021 Mar 14.
The aim of this study was to evaluate how accurate is a smartphone app to measure a physical activity parameter (steps). Physical Education undergraduate students (n = 46), both male and female, were recruited. A tally counter, a validated device (Xiaomi Mi Band 2®) and My Active Life app were used to perform the steps count. Each participant took three low-intensity treadmill walks (5 km h), with a number of target steps (500-, 1000- and 1500-steps walk). Visual agreement analyses was performed through Bland-Altman plots. There was no significant interaction between steps walks and device during treadmill walking test ( = 3.854; = 0.07). Differences in steps measured by Mi Band were not different from 0 in 500-steps walk ( = 0.243) and 1000-steps walk ( = 0.350), and in My Active Life in 500-steps walk ( = 0.177) and 1500-steps walk ( = 0.221). Bland-Altman analyses indicated an acceptable agreement between My active Life app and Mi Band devices for 1000-steps walk (-359.01; 310.43) and 1500-steps walk (-572.97; 377.11). In conclusion, My Active Life app showed accuracy in measuring total steps, in longer walking activities (e.g. higher than 1000 steps), and can be used on a daily basis and in research setting.
本研究的目的是评估一款智能手机应用程序测量身体活动参数（步数）的准确性。招募了体育专业本科学生（n = 46），男女皆有。使用计数器、经过验证的设备（小米手环2®）和“我的活跃生活”应用程序进行步数计数。每位参与者进行了三次低强度跑步机步行（5公里/小时），设定了不同的目标步数（500步、1000步和1500步步行）。通过布兰德-奥特曼图进行视觉一致性分析。在跑步机步行测试期间，步数与设备之间没有显著交互作用（F = 3.854；P = 0.07）。在500步步行（P = 0.243）和1000步步行（P = 0.350）中，小米手环测量的步数与0没有差异，在500步步行（P = 0.177）和1500步步行（P = 0.221）中，“我的活跃生活”应用程序测量的步数与0也没有差异。布兰德-奥特曼分析表明，对于1000步步行（-359.01；310.43）和1500步步行（-572.97；377.11），“我的活跃生活”应用程序与小米手环设备之间的一致性可以接受。总之，“我的活跃生活”应用程序在测量较长步行活动（例如超过1000步）的总步数时显示出准确性，可用于日常和研究环境。
