{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T04:49:09Z","timestamp":1776055749227,"version":"3.50.1"},"reference-count":77,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,2,15]],"date-time":"2023-02-15T00:00:00Z","timestamp":1676419200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Portuguese Foundation for Science and Technology","award":["UID\/DTP\/04045\/2019"],"award-info":[{"award-number":["UID\/DTP\/04045\/2019"]}]},{"name":"Portuguese Foundation for Science and Technology","award":["UIDB\/50008\/2020"],"award-info":[{"award-number":["UIDB\/50008\/2020"]}]},{"name":"FEDER\u2014PT2020","award":["UID\/DTP\/04045\/2019"],"award-info":[{"award-number":["UID\/DTP\/04045\/2019"]}]},{"name":"FEDER\u2014PT2020","award":["UIDB\/50008\/2020"],"award-info":[{"award-number":["UIDB\/50008\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>In recent years, physical activity assessment has increasingly relied on wearable monitors to provide measures for surveillance, intervention, and epidemiological research. This present systematic review aimed to examine the current research about the utilization of wearable technology in the evaluation in physical activities of preschool- and school-age children. A database search (Web of Science, PubMed and Scopus) for original research articles was performed. A total of twenty-one articles met the inclusion criteria, and the Cochrane risk of bias tool was used. Wearable technology can actually be a very important instrument\/tool to detect the movements and monitor the physical activity of children and adolescents. The results revealed that there are a few studies on the influence of these technologies on physical activity in schools, and most of them are descriptive. In line with previous research, the wearable devices can be used as a motivational tool to improve PA behaviors and in the evaluation of PA interventions. However, the different reliability levels of the different devices used in the studies can compromise the analysis and understanding of the results.<\/jats:p>","DOI":"10.3390\/ijerph20043402","type":"journal-article","created":{"date-parts":[[2023,2,15]],"date-time":"2023-02-15T04:47:24Z","timestamp":1676436444000},"page":"3402","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["The Use of Wearable Technologies in the Assessment of Physical Activity in Preschool- and School-Age Youth: Systematic Review"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9762-7867","authenticated-orcid":false,"given":"Ant\u00f3nio C.","family":"Sousa","sequence":"first","affiliation":[{"name":"Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, 5001-801 Vila Real, Portugal"},{"name":"Department of Sport Sciences, University of Beira Interior, 6201-001 Covilh\u00e3, Portugal"}]},{"given":"Susana N.","family":"Ferrinho","sequence":"additional","affiliation":[{"name":"Department of Letters, University of Beira Interior, 6201-001 Covilh\u00e3, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2165-2687","authenticated-orcid":false,"given":"Bruno F.","family":"Travassos","sequence":"additional","affiliation":[{"name":"Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, 5001-801 Vila Real, Portugal"},{"name":"Department of Sport Sciences, University of Beira Interior, 6201-001 Covilh\u00e3, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1326","DOI":"10.3390\/ijerph9041326","article-title":"Physical Activity Promotion in the Preschool Years: A Critical Period to Intervene","volume":"9","author":"Goldfield","year":"2012","journal-title":"Int. J. Environ. Res. Public Health"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"279","DOI":"10.2165\/00007256-200939040-00002","article-title":"Physical Activity as a Predictor of Adolescent Body Fatness","volume":"39","author":"Reichert","year":"2009","journal-title":"Sport. Med."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"418","DOI":"10.1016\/j.amepre.2009.07.012","article-title":"School-Based Interventions on Childhood Obesity","volume":"37","author":"Worley","year":"2009","journal-title":"Am. J. Prev. Med."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Olsen, N., Rohde, J., and Heitmann, B. (2015). The Healthy Start Project: A Randomized, Controlled Intervention to Prevent Overweight among Normal Weight, Preschool Children at High Risk of Future Overweight. Eur. J. Public Health, 25.","DOI":"10.1093\/eurpub\/ckv174.067"},{"key":"ref_5","unstructured":"Sallis, J., and Owen, N. (1999). Physical Activity and Behavioral Medicine, Sage Publications. [1st ed.]."},{"key":"ref_6","unstructured":"Armstrong, N., and Welsman, J. (1997). Young People and Physical Activity, Oxford University Press."},{"key":"ref_7","unstructured":"Rocha, L. (1998). O Papel da Educa\u00e7\u00e3o F\u00edsica na Promo\u00e7\u00e3o de Estilos de Vida Saud\u00e1veis, Faculty of Sport of the University of Porto."},{"key":"ref_8","first-page":"141","article-title":"Influencia Del Deporte y La Actividad F\u00edsica En El Estado de Salud F\u00edsico y Mental: Una Revisi\u00f3n Bibliogr\u00e1fica","volume":"25","author":"Barbosa","year":"2018","journal-title":"Rev. Katharsis"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"56","DOI":"10.1186\/1479-5868-5-56","article-title":"A Comparison of Direct versus Self-Report Measures for Assessing Physical Activity in Adults: A Systematic Review","volume":"5","author":"Prince","year":"2008","journal-title":"Int. J. Behav. Nutr. Phys. Act."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"S490","DOI":"10.1249\/01.mss.0000185571.49104.82","article-title":"The Technology of Accelerometry-Based Activity Monitors: Current and Future","volume":"37","author":"Chen","year":"2005","journal-title":"Med. Sci. Sport. Exerc."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"7772","DOI":"10.3390\/s100807772","article-title":"A Review of Accelerometry-Based Wearable Motion Detectors for Physical Activity Monitoring","volume":"10","author":"Yang","year":"2010","journal-title":"Sensors"},{"key":"ref_12","first-page":"39","article-title":"The Application of Wearable Technology in Surgery: Ensuring the Positive Impact of the Wearable Revolution on Surgical Patients","volume":"1","author":"Veillette","year":"2014","journal-title":"Front. Surg."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"e58","DOI":"10.2196\/mhealth.9054","article-title":"Evaluating the Impact of Physical Activity Apps and Wearables: Interdisciplinary Review","volume":"6","author":"McCallum","year":"2018","journal-title":"JMIR mHealth uHealth"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"e11819","DOI":"10.2196\/11819","article-title":"Consumer-Based Wearable Activity Trackers Increase Physical Activity Participation: Systematic Review and Meta-Analysis","volume":"7","author":"Brickwood","year":"2019","journal-title":"JMIR mHealth uHealth"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Seshadri, D.R., Rowbottom, J.R., Drummond, C., Voos, J.E., and Craker, J. (2016, January 15\u201317). A Review of Wearable Technology: Moving beyond the Hype: From Need through Sensor Implementation. Proceedings of the 2016 8th Cairo International Biomedical Engineering Conference (CIBEC), Cairo, Egypt.","DOI":"10.1109\/CIBEC.2016.7836118"},{"key":"ref_16","unstructured":"Gaskin, J., Jenkins, J., Meservy, T., Steffen, J., and Payne, K. (2022, September 10). Using Wearable Devices for Non-Invasive, Inexpensive Physiological Data Collection. Available online: https:\/\/scholarspace.manoa.hawaii.edu\/server\/api\/core\/bitstreams\/6c041d0a-0cb8-41cf-a60a-0bdffd526ba9\/content."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"376","DOI":"10.1016\/j.compeleceng.2017.06.031","article-title":"A Smartphone-Based Wearable Sensors for Monitoring Real-Time Physiological Data","volume":"65","author":"Leu","year":"2018","journal-title":"Comput. Electr. Eng."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"115622","DOI":"10.1016\/j.trac.2019.115622","article-title":"Wearable Electrochemical Sensors for Forensic and Clinical Applications","volume":"119","author":"Ferreira","year":"2019","journal-title":"TrAC Trends Anal. Chem."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2679","DOI":"10.1021\/acssensors.0c01318","article-title":"Wearable Electrochemical Sensors for the Monitoring and Screening of Drugs","volume":"5","author":"Teymourian","year":"2020","journal-title":"ACS Sens."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"130178","DOI":"10.1016\/j.snb.2021.130178","article-title":"Electrochemical Sensors: From the Bench to the Skin","volume":"344","author":"Mahato","year":"2021","journal-title":"Sens. Actuators B Chem."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"139033","DOI":"10.1109\/ACCESS.2020.3012309","article-title":"Preventing Undesired Face-Touches With Wearable Devices and Haptic Feedback","volume":"8","author":"Baldi","year":"2020","journal-title":"IEEE Access"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Marullo, S., Baldi, T.L., Paolocci, G., D\u2019Aurizio, N., and Prattichizzo, D. (June, January 30). No Face-Touch: Exploiting Wearable Devices and Machine Learning for Gesture Detection. Proceedings of the 2021 IEEE International Conference on Robotics and Automation (ICRA), Xi\u2019an, China.","DOI":"10.1109\/ICRA48506.2021.9561178"},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Pal, S., Mukhopadhyay, S., and Suryadevara, N. (2021). Development and Progress in Sensors and Technologies for Human Emotion Recognition. Sensors, 21.","DOI":"10.3390\/s21165554"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"124","DOI":"10.1109\/TMSCS.2017.2675888","article-title":"Wearable Medical Sensor-Based System Design: A Survey","volume":"3","author":"Mosenia","year":"2017","journal-title":"IEEE Trans. Multi-Scale Comput. Syst."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1016\/j.apergo.2018.02.005","article-title":"The Role of Individual Differences on Perceptions of Wearable Fitness Device Trust, Usability, and Motivational Impact","volume":"70","author":"Rupp","year":"2018","journal-title":"Appl. Ergon."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"148","DOI":"10.1016\/j.apergo.2019.03.003","article-title":"Employee Acceptance of Wearable Technology in the Workplace","volume":"78","author":"Jacobs","year":"2019","journal-title":"Appl. Ergon."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"191","DOI":"10.31501\/ealr.v12i2.13032","article-title":"An\u00e1lise de Custo-Benef\u00edcio, Tecnologias Vest\u00edveis e Monitoramento Biom\u00e9trico nos Esportes Norte-Americanos: Aspectos Jur\u00eddicos e Econ\u00f4micos","volume":"12","author":"Vita","year":"2021","journal-title":"Econ. Anal. Law Rev."},{"key":"ref_28","first-page":"45","article-title":"Wearable Technologies and Its Future Applications","volume":"3","year":"2015","journal-title":"Int. J. Electr. Electron. Data Commun."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Vega, K., and Fuks, H. (2016). Beauty Technology, Springer International Publishing.","DOI":"10.1007\/978-3-319-15762-7_2"},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Adesida, Y., Papi, E., and McGregor, A.H. (2019). Exploring the Role of Wearable Technology in Sport Kinematics and Kinetics: A Systematic Review. Sensors, 19.","DOI":"10.3390\/s19071597"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"68","DOI":"10.1016\/j.pmcj.2011.05.003","article-title":"Swimming Performance and Technique Evaluation with Wearable Acceleration Sensors","volume":"8","year":"2012","journal-title":"Pervasive Mob. Comput."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1080\/19346182.2009.9648494","article-title":"Biomechanical Analysis in Freestyle Snowboarding: Application of a Full-Body Inertial Measurement System and a Bilateral Insole Measurement System","volume":"2","year":"2009","journal-title":"Sport. Technol."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"743","DOI":"10.3389\/fphys.2018.00743","article-title":"A Critical Review of Consumer Wearables, Mobile Applications, and Equipment for Providing Biofeedback, Monitoring Stress, and Sleep in Physically Active Populations","volume":"9","author":"Peake","year":"2018","journal-title":"Front. Physiol."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"287","DOI":"10.1080\/19325037.2017.1343161","article-title":"The Motivational Impact of Wearable Healthy Lifestyle Technologies: A Self-Determination Perspective on Fitbits With Adolescents","volume":"48","author":"Kerner","year":"2017","journal-title":"Am. J. Health Educ."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"178","DOI":"10.1177\/2050157917691557","article-title":"Gender Differences in Gratifications from Fitness App Use and Implications for Health Interventions","volume":"5","author":"Klenk","year":"2017","journal-title":"Mob. Media Commun."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1080\/08924562.2014.901047","article-title":"Apps for Physical Education: Teacher Tested, Kid Approved!","volume":"27","author":"Phillips","year":"2014","journal-title":"Strategies"},{"key":"ref_37","doi-asserted-by":"crossref","unstructured":"Vega-Ram\u00edrez, L., Notario, R.O., and \u00c1valos-Ramos, M.A. (2020). The Relevance of Mobile Applications in the Learning of Physical Education. Educ. Sci., 10.","DOI":"10.3390\/educsci10110329"},{"key":"ref_38","doi-asserted-by":"crossref","unstructured":"Portela-Pino, I., L\u00f3pez-Castedo, A., Mart\u00ednez-Pati\u00f1o, M.J., Valverde-Esteve, T., and Dom\u00ednguez-Alonso, J. (2019). Gender Differences in Motivation and Barriers for The Practice of Physical Exercise in Adolescence. Int. J. Environ. Res. Public Health, 17.","DOI":"10.3390\/ijerph17010168"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"131","DOI":"10.5960\/dzsm.2016.237","article-title":"Wearables and Apps\u2014Modern Diagnostic Frameworks for Health Promotion through Sport","volume":"2016","author":"Schwartz","year":"2016","journal-title":"Dtsch. Z. Sportmed."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"567","DOI":"10.1080\/17408989.2020.1761953","article-title":"Effects of the IPad and Mobile Application-Integrated Physical Education on Children\u2019s Physical Activity and Psychosocial Beliefs","volume":"25","author":"Lee","year":"2020","journal-title":"Phys. Educ. Sport Pedagog."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"g7647","DOI":"10.1136\/bmj.g7647","article-title":"Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols (PRISMA-P) 2015: Elaboration and Explanation","volume":"349","author":"Shamseer","year":"2015","journal-title":"BMJ"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"353","DOI":"10.1002\/ajhb.21142","article-title":"Physical Activity Patterns in French Youth-From Childhood to Adolescence-Monitored with High-Frequency Accelerometry","volume":"23","author":"Blaes","year":"2011","journal-title":"Am. J. Hum. Biol."},{"key":"ref_43","first-page":"186","article-title":"Is Academic Achievement Reflected in the Level of Physical Activity among Adolescents?","volume":"20","author":"Valach","year":"2020","journal-title":"J. Phys. Educ. Sport"},{"key":"ref_44","unstructured":"Higgins, J.P.T., and Green, S. (2011). Cochrane Handbook for Systematic Reviews of Interventions, Version 5.1.0, The Cochrane Collaboration."},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Byun, W., Lau, E., and Brusseau, T. (2018). Feasibility and Effectiveness of a Wearable Technology-Based Physical Activity Intervention in Preschoolers: A Pilot Study. Int. J. Environ. Res. Public Health, 15.","DOI":"10.3390\/ijerph15091821"},{"key":"ref_46","doi-asserted-by":"crossref","unstructured":"Saint-Maurice, P., Bai, Y., Vazou, S., and Welk, G. (2018). Youth Physical Activity Patterns During School and Out-of-School Time. Children, 5.","DOI":"10.3390\/children5090118"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"1065","DOI":"10.1249\/01.MSS.0000069748.02525.B2","article-title":"Quantifying Physical Activity via Pedometry in Elementary Physical Education","volume":"35","author":"Scruggs","year":"2003","journal-title":"Med. Sci. Sport. Exerc."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"585","DOI":"10.1123\/pes.23.4.585","article-title":"Assessing Children\u2019s Physical Activity Behaviors at Recess: A Multi-Method Approach","volume":"23","author":"Welk","year":"2011","journal-title":"Pediatr. Exerc. Sci."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"145","DOI":"10.1080\/02701367.2011.10599732","article-title":"Middle School Students\u2019 Body Mass Index and Physical Activity Levels in Physical Education","volume":"82","author":"Gao","year":"2011","journal-title":"Res. Q. Exerc. Sport"},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"357","DOI":"10.5604\/12321966.1203905","article-title":"Differences in the Intensity of Physical Activity during School Days and Weekends in Polish and Czech Boys and Girls","volume":"23","author":"Kudlacek","year":"2016","journal-title":"Ann. Agric. Environ. Med."},{"key":"ref_51","doi-asserted-by":"crossref","unstructured":"Mit\u00e1\u0161, J., Fr\u00f6mel, K., Valach, P., Suchomel, A., Vorl\u00ed\u010dek, M., and Groffik, D. (2020). Secular Trends in the Achievement of Physical Activity Guidelines: Indicator of Sustainability of Healthy Lifestyle in Czech Adolescents. Sustainability, 12.","DOI":"10.3390\/su12125183"},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"376","DOI":"10.1111\/j.1365-2214.2009.00945.x","article-title":"El Changes in Physical Activity in Pre-Schoolers and First-Grade Children: Longitudinal Study in the Czech Republic","volume":"35","author":"Sigmund","year":"2009","journal-title":"Child. Care. Health Dev."},{"key":"ref_53","doi-asserted-by":"crossref","unstructured":"Sanders, T., Cliff, D.P., and Lonsdale, C. (2014). Measuring Adolescent Boys\u2019 Physical Activity: Bout Length and the Influence of Accelerometer Epoch Length. PLoS ONE, 9.","DOI":"10.1371\/journal.pone.0092040"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"1305","DOI":"10.1111\/sms.13438","article-title":"A Monitoring System to Provide Feedback on Student Physical Activity during Physical Education Lessons","volume":"29","author":"Hartwig","year":"2019","journal-title":"Scand. J. Med. Sci. Sports"},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"193","DOI":"10.5507\/ag.2016.020","article-title":"Physical Activity and Inactivity in Primary and Secondary School Boys\u2019 and Girls\u2019 Daily Program","volume":"46","author":"Groffik","year":"2016","journal-title":"Acta Gymnica"},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"421","DOI":"10.1016\/j.ypmed.2007.01.002","article-title":"Whole-Day and Segmented-Day Physical Activity Variability of Northwest England School Children","volume":"44","author":"Fairclough","year":"2007","journal-title":"Prev. Med."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1177\/1356336X16672127","article-title":"Physical Education Contributes to Total Physical Activity Levels and Predominantly in Higher Intensity Physical Activity Categories","volume":"24","author":"Kerr","year":"2018","journal-title":"Eur. Phys. Educ. Rev."},{"key":"ref_58","doi-asserted-by":"crossref","unstructured":"Mooses, K., Oja, M., Reisberg, S., Vilo, J., and Kull, M. (2018). Validating Fitbit Zip for Monitoring Physical Activity of Children in School: A Cross-Sectional Study. BMC Public Health, 18.","DOI":"10.1186\/s12889-018-5752-7"},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"269","DOI":"10.1080\/02640410410001730124","article-title":"Physical Activity and School Recess Time: Differences between the Sexes and the Relationship between Children\u2019s Playground Physical Activity and Habitual Physical Activity","volume":"23","author":"Mota","year":"2005","journal-title":"J. Sports Sci."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"100837","DOI":"10.1016\/j.pmedr.2019.100837","article-title":"Boys, Older Children, and Highly Active Children Benefit Most from the Preschool Arena Regarding Moderate-to-Vigorous Physical Activity: A Cross-Sectional Study of Norwegian Preschoolers","volume":"14","author":"Nilsen","year":"2019","journal-title":"Prev. Med. Rep."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"226","DOI":"10.1016\/j.jsams.2011.11.001","article-title":"Use of Pedometers to Identify Less Active Children and Time Spent in Moderate to Vigorous Physical Activity in the School Setting","volume":"15","author":"Rush","year":"2012","journal-title":"J. Sci. Med. Sport"},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"469","DOI":"10.1515\/IJAMH.2010.22.4.469","article-title":"Objectively Measured Physical Activty Level a during a Physical Education Class: A Pilot Study with Swedish Youth","volume":"22","author":"Raustorp","year":"2010","journal-title":"Int. J. Adolesc. Med. Health"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"259","DOI":"10.1136\/bjsports-2012-091517","article-title":"Effectiveness of the PLAYgrounds Programme on PA Levels during Recess in 6-Year-Old to 12-Year-Old Children","volume":"49","author":"Janssen","year":"2015","journal-title":"Br. J. Sports Med."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"878","DOI":"10.1177\/0269215508090675","article-title":"Wearable Systems for Monitoring Mobility-Related Activities in Older People: A Systematic Review","volume":"22","author":"Hartmann","year":"2008","journal-title":"Clin. Rehabil."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1123\/jpah.7.1.54","article-title":"Intensity of Physical Activity, Cardiorespiratory Fitness, and Body Mass Index in Youth","volume":"7","author":"Aires","year":"2010","journal-title":"J. Phys. Act. Health"},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"728","DOI":"10.1111\/j.1600-0838.2007.00741.x","article-title":"Daily Physical Activity Related to Aerobic Fitness and Body Fat in an Urban Sample of Children","volume":"18","author":"Dencker","year":"2008","journal-title":"Scand. J. Med. Sci. Sports"},{"key":"ref_67","doi-asserted-by":"crossref","unstructured":"Denton, S.J., Trenell, M.I., Pl\u00f6tz, T., Savory, L.A., Bailey, D.P., and Kerr, C.J. (2013). Cardiorespiratory Fitness Is Associated with Hard and Light Intensity Physical Activity but Not Time Spent Sedentary in 10\u201314 Year Old Schoolchildren: The HAPPY Study. PLoS ONE, 8.","DOI":"10.1371\/annotation\/09abd773-39df-46a9-b28e-3031be04fcb9"},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"746","DOI":"10.1093\/ajcn\/81.4.746","article-title":"Relations of Moderate and Vigorous Physical Activity to Fitness and Fatness in Adolescents","volume":"81","author":"Gutin","year":"2005","journal-title":"Am. J. Clin. Nutr."},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1038\/sj.ejcn.1601780","article-title":"Habitual Physical Activity and Physical Activity Intensity: Their Relation to Body Composition in 5.0\u201310.5-y-Old Children","volume":"58","author":"Abbott","year":"2004","journal-title":"Eur. J. Clin. Nutr."},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"477","DOI":"10.2165\/11588750-000000000-00000","article-title":"Influence of Intensity of Physical Activity on Adiposity and Cardiorespiratory Fitness in 5\u201318 Year Olds","volume":"41","author":"Parikh","year":"2011","journal-title":"Sport. Med."},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"299","DOI":"10.1093\/ajcn\/84.2.299","article-title":"Relations of Total Physical Activity and Intensity to Fitness and Fatness in Children: The European Youth Heart Study1\u20133","volume":"84","author":"Ruiz","year":"2006","journal-title":"Am. J. Clin. Nutr."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"244","DOI":"10.1016\/j.atherosclerosis.2008.09.004","article-title":"Relationships between Measures of Fitness, Physical Activity, Body Composition and Vascular Function in Children","volume":"204","author":"Hopkins","year":"2009","journal-title":"Atherosclerosis"},{"key":"ref_73","doi-asserted-by":"crossref","unstructured":"Fran\u00e7a, C., Santos, F., Martins, F., Lopes, H., Gouveia, B., Gon\u00e7alves, F., Campos, P., Marques, A., Ihle, A., and Gon\u00e7alves, T. (2022). Digital Health in Schools: A Systematic Review. Sustainability, 14.","DOI":"10.3390\/su142113848"},{"key":"ref_74","doi-asserted-by":"crossref","first-page":"26","DOI":"10.21037\/mhealth-21-28","article-title":"Utility of Fitbit Devices among Children and Adolescents with Chronic Health Conditions: A Scoping Review","volume":"8","author":"Kasparian","year":"2022","journal-title":"mHealth"},{"key":"ref_75","doi-asserted-by":"crossref","first-page":"50","DOI":"10.2174\/1875036201912010050","article-title":"Mobile Applications for the Promotion and Support of Healthy Nutrition and Physical Activity Habits: A Systematic Review, Extraction of Features and Taxonomy Proposal","volume":"12","author":"Villasana","year":"2019","journal-title":"Open Bioinform. J."},{"key":"ref_76","doi-asserted-by":"crossref","unstructured":"Saint-Maurice, P.F., and Welk, G.J. (2015). Validity and Calibration of the Youth Activity Profile. PLoS ONE, 10.","DOI":"10.1371\/journal.pone.0143949"},{"key":"ref_77","doi-asserted-by":"crossref","first-page":"S531","DOI":"10.1249\/01.mss.0000185657.86065.98","article-title":"Conducting Accelerometer-Based Activity Assessments in Field-Based Research","volume":"37","author":"Trost","year":"2005","journal-title":"Med. Sci. Sport. 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