{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,28]],"date-time":"2026-03-28T05:06:56Z","timestamp":1774674416419,"version":"3.50.1"},"reference-count":54,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2020,3,6]],"date-time":"2020-03-06T00:00:00Z","timestamp":1583452800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010665","name":"H2020 Marie Sk\u0142odowska-Curie Actions","doi-asserted-by":"publisher","award":["H2020-MSCA-IF-2016-DeciTrustNET-746398"],"award-info":[{"award-number":["H2020-MSCA-IF-2016-DeciTrustNET-746398"]}],"id":[{"id":"10.13039\/100010665","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100014440","name":"Ministerio de Ciencia, Innovaci\u00f3n y Universidades","doi-asserted-by":"publisher","award":["TIN2016-75850-P"],"award-info":[{"award-number":["TIN2016-75850-P"]}],"id":[{"id":"10.13039\/100014440","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The development of innovative solutions that allow the aging population to remain healthier and independent longer is essential to alleviate the burden that this increasing segment of the population supposes for the long term sustainability of the public health systems. It has been claimed that promoting physical activity could prevent functional decline. However, given the vulnerability of this population, the activity prescription requires to be tailored to the individual\u2019s physical condition. We propose mobile Senior Fitness Test (m-SFT), a novel m-health system, that allows the health practitioner to determine the elderly physical condition by implementing a smartphone-based version of the senior fitness test (SFT). The technical reliability of m-SFT has been tested by carrying out a comparative study in seven volunteers (53\u201361 years) between the original SFT and the proposed m-health system obtaining high agreement (intra-class correlation coefficient (ICC) between 0.93 and 0.99). The system usability has been evaluated by 34 independent health experts (mean = 36.64 years; standard deviation = 6.26 years) by means of the System Usability Scale (SUS) obtaining an average SUS score of 84.4 out of 100. Both results point out that m-SFT is a reliable and easy to use m-health system for the evaluation of the elderly physical condition, also useful in intervention programs to follow-up the patient\u2019s evolution.<\/jats:p>","DOI":"10.3390\/s20051462","type":"journal-article","created":{"date-parts":[[2020,3,9]],"date-time":"2020-03-09T05:37:34Z","timestamp":1583732254000},"page":"1462","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["m-SFT: A Novel Mobile Health System to Assess the Elderly Physical Condition"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4099-7437","authenticated-orcid":false,"given":"Raquel","family":"Ure\u00f1a","sequence":"first","affiliation":[{"name":"Institute of Artificial Intelligence (IAI), School of Computer Science and Informatics, De Montfort University, Leicester LE1 9BH, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3952-4210","authenticated-orcid":false,"given":"Francisco","family":"Chiclana","sequence":"additional","affiliation":[{"name":"Institute of Artificial Intelligence (IAI), School of Computer Science and Informatics, De Montfort University, Leicester LE1 9BH, UK"},{"name":"Andalusian Research Institute on Data Science and Computational Intelligence (DaSCI), University of Granada, 18071 Granada, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alvaro","family":"Gonzalez-Alvarez","sequence":"additional","affiliation":[{"name":"Department of Computer Science, University of Cadiz, 11519 Puerto Real, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7922-4984","authenticated-orcid":false,"given":"Enrique","family":"Herrera-Viedma","sequence":"additional","affiliation":[{"name":"Andalusian Research Institute on Data Science and Computational Intelligence (DaSCI), University of Granada, 18071 Granada, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6465-982X","authenticated-orcid":false,"given":"Jose A.","family":"Moral-Munoz","sequence":"additional","affiliation":[{"name":"Department of Nursing and Physiotherapy, Universidad de C\u00e1diz, 11009 C\u00e1diz, Spain"},{"name":"Institute of Research and Innovation in Biomedical Sciences of the Province of C\u00e1diz (INiBICA), Universidad de C\u00e1diz, 11009 C\u00e1diz, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,3,6]]},"reference":[{"key":"ref_1","unstructured":"OECD (2019, November 21). OECD Health at a Glance 2013: OECD Indicators. Available online: http:\/\/www.oecd.org\/els\/healthsystems\/Health-at-a-Glance-2013.pdf."},{"key":"ref_2","unstructured":"EU-Statistics (2016). Eurostat People in the EU-Statistics on an Ageing Society, Statistical Office of the European Communities (EUROSTAT). Technical Report."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1056\/NEJMp1209500","article-title":"Shared Decision Making to Improve Care and Reduce Costs","volume":"368","author":"Emanuel","year":"2013","journal-title":"N. Engl. J. Med."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"223","DOI":"10.4258\/hir.2015.21.4.223","article-title":"Geriatric Telemedicine: Background and Evidence for Telemedicine as a Way to Address the Challenges of Geriatrics","volume":"21","author":"Merrell","year":"2015","journal-title":"Heal. Inf. Res"},{"key":"ref_5","unstructured":"National Council on Aging (2014). Healthy Aging Facts, National Council on Aging."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Helbostad, J.L., Vereijken, B., Becker, C., Todd, C., Taraldsen, K., Pijnappels, M., Aminian, K., and Mellone, S. (2017). Mobile Health Applications to Promote Active and Healthy Ageing. Sensors, 17.","DOI":"10.3390\/s17030622"},{"key":"ref_7","first-page":"126","article-title":"Physical activity, exercise, and physical fitness: Definitions and distinctions for health-related research","volume":"100","author":"Caspersen","year":"1985","journal-title":"Public Health Rep."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"College and Position Stand (1998). Exercise and Physical Activity in older adults. Med. Sci. Sport Exerc., 30, 992\u20131008.","DOI":"10.1249\/00005768-199806000-00033"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"e731","DOI":"10.3399\/bjgp15X687361","article-title":"Promoting physical activity in older people in general practice: ProAct65 cluster randomised controlled trial","volume":"65","author":"Iliffe","year":"2015","journal-title":"Br. J. Gen. Pract."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"235","DOI":"10.1016\/j.ijmedinf.2014.01.004","article-title":"Factors influencing acceptance of technology for aging in place: A systematic review","volume":"83","author":"Peek","year":"2014","journal-title":"Int. J. Med. Inform."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"e012074","DOI":"10.1136\/bmjopen-2016-012074","article-title":"Effect of affordable technology on physical activity levels and mobility outcomes in rehabilitation: A protocol for the Activity and MObility UsiNg Technology (AMOUNT) rehabilitation trial","volume":"6","author":"Hassett","year":"2016","journal-title":"BMJ Open"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"e20","DOI":"10.2196\/jmir.3.2.e20","article-title":"What is e-health?","volume":"3","author":"Eysenbach","year":"2001","journal-title":"J. Med. Internet Res."},{"key":"ref_13","unstructured":"For eHealth, W.G.O. (2019, May 22). mHealth: New Horizons for Health through Mobile Technologies: Second Global Survey on eHealth. Available online: http:\/\/www.who.int\/goe\/publications\/goe_mhealth_web.pdf."},{"key":"ref_14","unstructured":"Rikli, R.E., and Jones, C.J. (2013). Senior Fitness Test Manual, Human Kinetics."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"915","DOI":"10.1016\/j.asoc.2017.09.027","article-title":"Real-time human activity recognition from accelerometer data using Convolutional Neural Networks","volume":"62","author":"Ignatov","year":"2018","journal-title":"Appl. Soft Comput."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"611","DOI":"10.1177\/1357633X18790170","article-title":"A smartphone-based solution to monitor daily physical activity in a care home","volume":"25","author":"Joosen","year":"2019","journal-title":"J. Telemed. Telecare"},{"key":"ref_17","unstructured":"Research, Z.M. (2018, April 24). mHealth Market by Devices, by Stakeholder, by Service, by Therapeutics and by Applications: Global Industry Perspective, Comprehensive Analysis and Forecast, 2014\u20132022. Available online: https:\/\/www.zionmarketresearch.com\/report\/mhealth-market."},{"key":"ref_18","first-page":"24","article-title":"How Smartphones are Changing the Face of Mobile and Participatory Healthcare: An Overview, with Example from eCAALYX","volume":"10","author":"Boulos","year":"2011","journal-title":"Biomed. Eng."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"e2","DOI":"10.2196\/jmir.1298","article-title":"Measures of Physical Activity Using Cell Phones: Validation Using Criterion Methods","volume":"12","author":"Bexelius","year":"2010","journal-title":"J. Med. Internet Res."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"e81","DOI":"10.2196\/jmir.8712","article-title":"A Mobile App to Improve Self-Management of Individuals With Type 2 Diabetes: Qualitative Realist Evaluation","volume":"20","author":"Desveaux","year":"2018","journal-title":"J. Med. Internet Res."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"780","DOI":"10.1109\/TITB.2008.926429","article-title":"Impact of Patient-General Practitioner Short-Messages-Based Interaction on The Control of Hypertension in a Follow-up Service for Low-to-Medium Risk Hypertensive Patients: A Randomized Controlled Trial","volume":"12","author":"Carrasco","year":"2008","journal-title":"IEEE Trans. Inf. Technol. Biomed."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1089\/cpb.2008.0156","article-title":"The Use of Mobile Narratives for Reducing Stress in Commuters","volume":"12","author":"Grassi","year":"2009","journal-title":"Cyberpsychol. Behav."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1157","DOI":"10.1682\/JRRD.2012.06.0113","article-title":"Visual training and emotional state of people with retinitis pigmentosa","volume":"50","author":"Pelayo","year":"2013","journal-title":"J. Rehabil. Res. Dev."},{"key":"ref_24","unstructured":"LifeSum (2018, August 27). LifeSum. Available online: https:\/\/lifesum.com\/."},{"key":"ref_25","unstructured":"Google (2018, August 27). GoogleFit. Available online: https:\/\/www.google.com\/fit\/."},{"key":"ref_26","unstructured":"Endomondo (2018, August 27). Endomondo Sport Tracker. Available online: https:\/\/www.endomondo.com\/."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"338","DOI":"10.1038\/oby.2010.208","article-title":"The Effect of Electronic Self-Monitoring on Weight Loss and Dietary Intake: A Randomized Behavioral Weight Loss Trial","volume":"19","author":"Burke","year":"2011","journal-title":"Obesity"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1016\/j.amepre.2007.09.025","article-title":"Promoting Physical Activity through Hand-Held Computer Technology","volume":"34","author":"King","year":"2008","journal-title":"Am. J. Prev. Med."},{"key":"ref_29","unstructured":"(2018, August 24). Active Hip, Plataforma de Telerehabilitacion de Cadera. Available online: http:\/\/activehip.es\/."},{"key":"ref_30","unstructured":"DigiRehab (2018, August 27). DigiRehab. Available online: https:\/\/portal.digirehab.dk\/ContentId\/8214\/Default.aspx?Language=2057."},{"key":"ref_31","unstructured":"Ure\u00f1a, R., Mart\u00ednez-Ca\u00f1ada, P., G\u00f3mez-L\u00f3pez, J.M., Morillas, C.A., and Pelayo, F.J. (2011, January 5\u20137). A Portable Low Vision Aid based on GPU. Proceedings of the 1st International Conference on Pervasive and Embedded Computing and Communication Systems, PECCS 2011, Vilamoura, Algarve, Portugal."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1186\/1687-5281-2012-1","article-title":"Real-time tone mapping on GPU and FPGA","volume":"2012","author":"Morillas","year":"2012","journal-title":"EURASIP J. Image Video Process."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1016\/j.sysarc.2012.10.005","article-title":"Embedded system for contrast enhancement in low-vision","volume":"59","author":"Morillas","year":"2013","journal-title":"J. Syst. Archit. Embed. Syst. Des."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1016\/j.neucom.2012.09.035","article-title":"Real-time bio-inspired contrast enhancement on GPU","volume":"121","author":"Morillas","year":"2013","journal-title":"Neurocomputing"},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1016\/j.gaitpost.2012.02.006","article-title":"Validity of a Smartphone-Based Instrumented Timed Up and Go","volume":"36","author":"Mellone","year":"2012","journal-title":"Gait Posture"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"13159","DOI":"10.3390\/s150613159","article-title":"MDurance: A novel mobile health system to support trunk endurance assessment","volume":"15","author":"Banos","year":"2015","journal-title":"Sensors"},{"key":"ref_37","unstructured":"(2018, August 24). Senior Fitness Test 2.0. Available online: https:\/\/sft.humankinetics.com\/login?ReturnUrl=%2f."},{"key":"ref_38","unstructured":"Android Developers, G (2018, August 24). Save Data Using SQLite. Available online: https:\/\/developer.android.com\/training\/data-storage\/sqlite.html."},{"key":"ref_39","unstructured":"Jay, P. (2018, August 24). MP Android Chart. Available online: https:\/\/github.com\/PhilJay\/MPAndroidChart."},{"key":"ref_40","unstructured":"Android Developers, G (2018, August 24). Motion Sensors. Available online: https:\/\/developer.android.com\/guide\/topics\/sensors\/sensors_motion.html."},{"key":"ref_41","unstructured":"(2020, February 04). Android Sensors Overview. Available online: https:\/\/developer.android.com\/guide\/topics\/sensors\/sensors_overview."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"831","DOI":"10.1109\/ACCESS.2014.2348943","article-title":"Algorithms for smartphone and tablet image analysis for healthcare applications","volume":"2","author":"White","year":"2014","journal-title":"IEEE Access"},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"947","DOI":"10.1097\/BRS.0b013e318281a36c","article-title":"Agreement between telerehabilitation and face-to-face clinical outcome assessments for low back pain in primary care","volume":"38","author":"Olea","year":"2013","journal-title":"Spine"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"2661","DOI":"10.1519\/JSC.0000000000000896","article-title":"Agreement Between Face-to-Face and Free Software Video Analysis for Assessing Hamstring Flexibility in Adolescents","volume":"29","author":"Cobo","year":"2015","journal-title":"J. Strength Cond. Res."},{"key":"ref_45","unstructured":"Gliem, J.A., and Gliem, R.R. (2003, January 23\u201328). Calculating, interpreting, and reporting Cronbach\u2019s alpha reliability coefficient for Likert-type scales. Proceedings of the Midwest Research-to-Practice Conference in Adult, Continuing, and Community Education, DeKalb, IL, USA."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1093\/bja\/aem214","article-title":"Using the Bland\u2014Altman method to measure agreement with repeated measures","volume":"99","author":"Myles","year":"2007","journal-title":"Br. J. Anaesth."},{"key":"ref_47","first-page":"4","article-title":"SUS-A quick and dirty usability scale","volume":"189","author":"Brooke","year":"1996","journal-title":"Usability Eval. Ind."},{"key":"ref_48","doi-asserted-by":"crossref","unstructured":"Lewis, J.R., and Sauro, J. (2009). The factor structure of the system usability scale. Human Centered Design, Springer.","DOI":"10.1007\/978-3-642-02806-9_12"},{"key":"ref_49","first-page":"574","article-title":"An empirical evaluation of the system usability scale","volume":"24","author":"Bangor","year":"2008","journal-title":"Intl. J. Hum. Interact."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"569","DOI":"10.1016\/j.math.2014.05.009","article-title":"Reliability and concurrent validity of knee angle measurement: Smart phone app versus universal goniometer used by experienced and novice clinicians","volume":"19","author":"Milanese","year":"2014","journal-title":"Man. Ther."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"325","DOI":"10.1097\/PHM.0000000000000221","article-title":"Reliability and validity of a smartphone app to measure joint range","volume":"94","author":"Vohralik","year":"2015","journal-title":"Am. J. Phys. Med. Rehabil."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1186\/1475-925X-13-156","article-title":"Reliability and criterion-related validity with a smartphone used in timed-up-and-go test","volume":"13","year":"2014","journal-title":"Biomed. Eng. Online"},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"e10296","DOI":"10.2196\/10296","article-title":"Novel mHealth app to deliver geriatric assessment-driven interventions for older adults with cancer: Pilot feasibility and usability study","volume":"4","author":"Loh","year":"2018","journal-title":"JMIR Cancer"},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"e11569","DOI":"10.2196\/11569","article-title":"A fall risk mhealth app for older adults: Development and usability study","volume":"1","author":"Hsieh","year":"2018","journal-title":"JMIR Aging"}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/5\/1462\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T09:04:57Z","timestamp":1760173497000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/5\/1462"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,3,6]]},"references-count":54,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2020,3]]}},"alternative-id":["s20051462"],"URL":"https:\/\/doi.org\/10.3390\/s20051462","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,3,6]]}}}