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Authors thank Aliisa Hatten for the English revision. This study is part of the doctoral thesis of Carolina Casado-Robles, as well as of the I + D + i Fit-Person project (Reference: PID2019-110179GB-100), funded by the MCIN/AEI/10.13039/501100011033. There is no conflict of interest. The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. The present study complies with the current laws of the country in which it was performed. The datasets generated and analyzed during the current study are not publicly available but are available from the corresponding author, who was an organizer of the study.

Analysis of institutional authors

Guijarro-Romero, SantiagoCorresponding Author

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June 25, 2024
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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

Publicated to:Journal of Sports Science and Medicine. 22 (2): 196-211 - 2023-04-01 22(2), DOI: 10.52082/jssm.2023.196

Authors: Casado-Robles, Carolina; Mayorga-Vega, Daniel; Guijarro-Romero, Santiago; Viciana, Jesus

Affiliations

Univ Granada, Dept Phys Educ & Sport, Granada, Spain - Author
Univ Malaga, Fac Ciencias Educ, Dept Didact Lenguas Artes & Deporte, Malaga, Spain - Author
Univ Valladolid, Dept Didact Mus Plast & Corporal Express, Valladolid, Spain - Author

Abstract

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-age = 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 (P = 0.89 - 0.95, k = 0.71 - 0.87) and the recommended 60 minutes of moderate-to-vigorous PA per day (P = 0.89 - 0.94, k = 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.

Keywords

AccelerometerAccelerometersAccuracyActivity monitorAgreementCalibratioChildrenConsumer-wearable activity trackerFitness trackerReliabilityStatistical-methodsWearablesYoutYouth

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal of Sports Science and Medicine due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2023, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Physical Therapy, Sports Therapy and Rehabilitation.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 8.91, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Sep 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-09-04, the following number of citations:

  • WoS: 11
  • Scopus: 9

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-09-04:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 43 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.

Leadership analysis of institutional authors

the author responsible for correspondence tasks has been GUIJARRO ROMERO, SANTIAGO.