小米手环 2、3、4 和 5 在无结构自由生活条件下评估 12 至 18 岁青少年身体活动的有效性。适合人员研究。
Validity of the Xiaomi Mi Band 2, 3, 4 and 5 Wristbands for Assessing Physical Activity in 12-to-18-Year-Old Adolescents under Unstructured Free-Living Conditions. Fit-Person Study.
机构信息
Department of Physical Education and Sport, University of Granada, Granada, Spain.
Departamento de Didáctica de las Lenguas, las Artes y el Deporte, Facultad de Ciencias de la Educación, Universidad de Málaga, Málaga, España.
出版信息
J Sports Sci Med. 2023 Jun 1;22(2):196-211. doi: 10.52082/jssm.2023.196. eCollection 2023 Jun.
The purpose was to assess the validity of four generations of Xiaomi Mi Band wristbands for the assessment of step count and physical activity (PA) levels among adolescents aged 12-18 years under free-living conditions. One hundred adolescents were invited to participate in the present study. The final sample consisted of 62 high-school students (34 females), aged 12-18 years old (M = 14.1 ± 1.6 years), who wore an ActiGraph accelerometer on their hip (PA and step count reference measures) and four activity wristbands (Xiaomi Mi Band 2, 3, 4, and 5) on their non-dominant wrist during the waking time of one day. Results showed that the agreement between daily PA levels (i.e., slow, brisk, and slow-brisk pace walking, total PA and moderate-to-vigorous PA) measured by Xiaomi Mi Band wristbands and the accelerometer were poor (ICC, 95% CI = 0.06-0.78, 0.00-0.92; MAPE = 50.1-150.6%). However, agreement between daily step count measured by the accelerometer and the Xiaomi Mi Band wristbands were between acceptable (MAPE = 12.2-13.6%) to excellent (ICC, 95% CI = 0.94-0.95, 0.90-0.97). Furthermore, the Xiaomi Mi Band wristbands have a good to excellent validity for correctly classifying adolescents as meeting or not meeting the recommended 10,000 steps per day ( = 0.89-0.95, = 0.71-0.87) and the recommended 60 minutes of moderate-to-vigorous PA per day ( = 0.89-0.94, = 0.69-0.83). Furthermore, comparability between the four Xiaomi Mi Band generations were poor to excellent (ICC, 95% CI = 0.22-0.99, 0.00-1.00) for the daily PA levels outputs, although it was excellent (ICC, 95% CI = 0.99-1.00, 0.96-1.00; MAPE = 0.0-0.1%) for daily step count. Different models of Xiaomi Mi Band wristbands were comparable and presented good validity for measuring adolescents' step count, and they accurately classified adolescents as meeting or not meeting the PA recommendations under free-living conditions.
目的是评估小米手环四代在评估 12-18 岁青少年自由生活条件下的步数和身体活动 (PA) 水平方面的有效性。邀请了 100 名青少年参加本研究。最终样本由 62 名高中生（34 名女性）组成，年龄在 12-18 岁（M=14.1±1.6 岁），他们在一天的清醒时间内将 ActiGraph 加速度计佩戴在臀部（PA 和步数参考测量）和四个活动手环（小米手环 2、3、4 和 5）佩戴在非优势手腕上。结果表明，小米手环腕带测量的日常 PA 水平（即慢、快、慢快步行、总 PA 和中到剧烈 PA）与加速度计之间的一致性较差（ICC，95%CI=0.06-0.78，0.00-0.92；MAPE=50.1-150.6%）。然而，加速度计测量的日常步数与小米手环腕带之间的一致性在可接受（MAPE=12.2-13.6%）到极好（ICC，95%CI=0.94-0.95，0.90-0.97）之间。此外，小米手环腕带对于正确分类青少年是否达到或未达到每天 10000 步的推荐量（=0.89-0.95，=0.71-0.87）和每天 60 分钟的中到剧烈 PA 的推荐量（=0.89-0.94，=0.69-0.83）具有良好到极好的有效性。此外，对于日常 PA 水平输出，四代小米手环之间的可比性较差到极好（ICC，95%CI=0.22-0.99，0.00-1.00），而对于日常步数，它是极好的（ICC，95%CI=0.99-1.00，0.96-1.00；MAPE=0.0-0.1%）。不同型号的小米手环腕带具有可比性，对测量青少年的步数具有良好的有效性，并且能够准确地对青少年在自由生活条件下是否达到 PA 推荐值进行分类。
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