Accuracy of steps measured by smartphones-based WeRun compared with ActiGraph-GT3X accelerometer in free-living conditions
ObjectivesThe purpose of this study was to evaluate the accuracy and reliability of steps tracked by smartphone-based WeChat app compared with Actigraph-GT3X accelerometer in free-living conditions.DesignA cross-sectional study and repeated measures.MethodsA total of 103 employees in the Pudong New...
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| Format: | Article |
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Frontiers Media S.A.
2022-12-01
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| Series: | Frontiers in Public Health |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpubh.2022.1009022/full |
| _version_ | 1811198257777344512 |
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| author | Qinqin Yao Jing Wang Yucong Sun Li Zhang Shuangyuan Sun Minna Cheng Qinping Yang Siyuan Wang Ling Huang Tao Lin Yingnan Jia Yingnan Jia |
| author_facet | Qinqin Yao Jing Wang Yucong Sun Li Zhang Shuangyuan Sun Minna Cheng Qinping Yang Siyuan Wang Ling Huang Tao Lin Yingnan Jia Yingnan Jia |
| author_sort | Qinqin Yao |
| collection | DOAJ |
| description | ObjectivesThe purpose of this study was to evaluate the accuracy and reliability of steps tracked by smartphone-based WeChat app compared with Actigraph-GT3X accelerometer in free-living conditions.DesignA cross-sectional study and repeated measures.MethodsA total of 103 employees in the Pudong New Area of Shanghai, China, participated in this study. The participants wore an ActiGraph-GT3X accelerometer during the period of August to September 2019 (Time 1), December 2019 (Time 2) and September 2020 (Time 3). Each time, they wore the ActiGraph-GT3X accelerometer continuously for 7 days to assess their 7-day step counts. The smartphone-based WeRun step counts were collected in the corresponding period when subjects wore accelerometers. The subjects were invited to complete basic demographic characteristics questionnaires and to perform physical examination to obtain health-related results such as height, body weight, body fat percentage, waist circumference, hip circumference, and blood pressure.ResultsBased on 103 participants' 21 days of data, we found that the Spearman correlation coefficient between them was 0.733 (P < 0.01). The average number of WeRun steps measured by smartphones was 8,975 (4,059) per day, which was higher than those measured by accelerometers (8,462 ± 3,486 per day, P < 0.01). Demographic characteristics and different conditions can affect the consistency of measurements. The consistency was higher in those who were male, older, master's degree and above educated, and traveled by walking. Steps measured by smartphone and accelerometer in working days and August showed stronger correlation than other working conditions and time. Mean absolute percent error (MAPE) for step counts ranged from 0.5 to 15.9%. The test-retest reliability coefficients of WeRun steps ranged from 0.392 to 0.646. A multiple regression analysis adjusted for age, gender, and MVPA/step counts measured during Time 1 showed that body composition (body weight, BMI, body fat percentage, waist circumference, and hip circumference) was correlated with moderate-to-vigorous intensity physical activity, but it was not correlated with WeRun step counts.ConclusionsThe smartphone-based WeChat app can be used to assess physical activity step counts and is a reliable tool for measuring steps in free-living conditions. However, WeRun step counts' utilization is potentially limited in predicting body composition. |
| first_indexed | 2024-04-12T01:27:52Z |
| format | Article |
| id | doaj.art-d90337cb4ebe4ff486675b114f709d6a |
| institution | Directory Open Access Journal |
| issn | 2296-2565 |
| language | English |
| last_indexed | 2024-04-12T01:27:52Z |
| publishDate | 2022-12-01 |
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| series | Frontiers in Public Health |
| spelling | doaj.art-d90337cb4ebe4ff486675b114f709d6a2022-12-22T03:53:35ZengFrontiers Media S.A.Frontiers in Public Health2296-25652022-12-011010.3389/fpubh.2022.10090221009022Accuracy of steps measured by smartphones-based WeRun compared with ActiGraph-GT3X accelerometer in free-living conditionsQinqin Yao0Jing Wang1Yucong Sun2Li Zhang3Shuangyuan Sun4Minna Cheng5Qinping Yang6Siyuan Wang7Ling Huang8Tao Lin9Yingnan Jia10Yingnan Jia11Key Lab of Public Health Safety of the Ministry of Education, School of Public Health, Fudan University, Shanghai, ChinaShanghai Pudong New Area Center for Disease Control and Prevention, Shanghai, ChinaWinning Ringnex Technology (Shanghai) Co., Ltd., Shanghai, ChinaShanghai Pudong New Area Center for Disease Control and Prevention, Shanghai, ChinaShanghai Municipal Center for Disease Control and Prevention, Shanghai, ChinaShanghai Municipal Center for Disease Control and Prevention, Shanghai, ChinaShanghai Municipal Center for Disease Control and Prevention, Shanghai, ChinaShanghai Municipal Center for Disease Control and Prevention, Shanghai, ChinaShanghai Pudong New Area Center for Disease Control and Prevention, Shanghai, ChinaShanghai Pudong New Area Center for Disease Control and Prevention, Shanghai, ChinaKey Lab of Public Health Safety of the Ministry of Education, School of Public Health, Fudan University, Shanghai, ChinaHealth Communication Institute, Fudan University, Shanghai, ChinaObjectivesThe purpose of this study was to evaluate the accuracy and reliability of steps tracked by smartphone-based WeChat app compared with Actigraph-GT3X accelerometer in free-living conditions.DesignA cross-sectional study and repeated measures.MethodsA total of 103 employees in the Pudong New Area of Shanghai, China, participated in this study. The participants wore an ActiGraph-GT3X accelerometer during the period of August to September 2019 (Time 1), December 2019 (Time 2) and September 2020 (Time 3). Each time, they wore the ActiGraph-GT3X accelerometer continuously for 7 days to assess their 7-day step counts. The smartphone-based WeRun step counts were collected in the corresponding period when subjects wore accelerometers. The subjects were invited to complete basic demographic characteristics questionnaires and to perform physical examination to obtain health-related results such as height, body weight, body fat percentage, waist circumference, hip circumference, and blood pressure.ResultsBased on 103 participants' 21 days of data, we found that the Spearman correlation coefficient between them was 0.733 (P < 0.01). The average number of WeRun steps measured by smartphones was 8,975 (4,059) per day, which was higher than those measured by accelerometers (8,462 ± 3,486 per day, P < 0.01). Demographic characteristics and different conditions can affect the consistency of measurements. The consistency was higher in those who were male, older, master's degree and above educated, and traveled by walking. Steps measured by smartphone and accelerometer in working days and August showed stronger correlation than other working conditions and time. Mean absolute percent error (MAPE) for step counts ranged from 0.5 to 15.9%. The test-retest reliability coefficients of WeRun steps ranged from 0.392 to 0.646. A multiple regression analysis adjusted for age, gender, and MVPA/step counts measured during Time 1 showed that body composition (body weight, BMI, body fat percentage, waist circumference, and hip circumference) was correlated with moderate-to-vigorous intensity physical activity, but it was not correlated with WeRun step counts.ConclusionsThe smartphone-based WeChat app can be used to assess physical activity step counts and is a reliable tool for measuring steps in free-living conditions. However, WeRun step counts' utilization is potentially limited in predicting body composition.https://www.frontiersin.org/articles/10.3389/fpubh.2022.1009022/fullActiGraph-GT3X accelerometer stepshealth-related outcomesWeChat stepsfree-living conditionsmoderate-to-vigorous intensity physical activity |
| spellingShingle | Qinqin Yao Jing Wang Yucong Sun Li Zhang Shuangyuan Sun Minna Cheng Qinping Yang Siyuan Wang Ling Huang Tao Lin Yingnan Jia Yingnan Jia Accuracy of steps measured by smartphones-based WeRun compared with ActiGraph-GT3X accelerometer in free-living conditions Frontiers in Public Health ActiGraph-GT3X accelerometer steps health-related outcomes WeChat steps free-living conditions moderate-to-vigorous intensity physical activity |
| title | Accuracy of steps measured by smartphones-based WeRun compared with ActiGraph-GT3X accelerometer in free-living conditions |
| title_full | Accuracy of steps measured by smartphones-based WeRun compared with ActiGraph-GT3X accelerometer in free-living conditions |
| title_fullStr | Accuracy of steps measured by smartphones-based WeRun compared with ActiGraph-GT3X accelerometer in free-living conditions |
| title_full_unstemmed | Accuracy of steps measured by smartphones-based WeRun compared with ActiGraph-GT3X accelerometer in free-living conditions |
| title_short | Accuracy of steps measured by smartphones-based WeRun compared with ActiGraph-GT3X accelerometer in free-living conditions |
| title_sort | accuracy of steps measured by smartphones based werun compared with actigraph gt3x accelerometer in free living conditions |
| topic | ActiGraph-GT3X accelerometer steps health-related outcomes WeChat steps free-living conditions moderate-to-vigorous intensity physical activity |
| url | https://www.frontiersin.org/articles/10.3389/fpubh.2022.1009022/full |
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