Journal article 1447 views 47 downloads
Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality
Wearable Technologies, Volume: 6
Swansea University Authors:
Alex Swain, Melitta McNarry , Kelly Mackintosh
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© The Author(s), 2025. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence.
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DOI (Published version): 10.1017/wtc.2025.10034
Abstract
In recent years, there has been growing interest regarding the impact of human movement quality on health. However, assessing movement quality outside of laboratories or clinics remains challenging. This study aimed to evaluate the capabilities of consumer-grade wearables to assess movement quality...
| Published in: | Wearable Technologies |
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| ISSN: | 2631-7176 |
| Published: |
Cambridge University Press (CUP)
2025
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa70731 |
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2025-10-20T11:32:53Z |
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2025-11-22T05:31:54Z |
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<?xml version="1.0"?><rfc1807><datestamp>2025-11-21T15:30:38.2537230</datestamp><bib-version>v2</bib-version><id>70731</id><entry>2025-10-20</entry><title>Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality</title><swanseaauthors><author><sid>e58af411e7a9cdf4197ff81cad1eb321</sid><firstname>Alex</firstname><surname>Swain</surname><name>Alex Swain</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>062f5697ff59f004bc8c713955988398</sid><ORCID>0000-0003-0813-7477</ORCID><firstname>Melitta</firstname><surname>McNarry</surname><name>Melitta McNarry</name><active>true</active><ethesisStudent>false</ethesisStudent></author><author><sid>bdb20e3f31bcccf95c7bc116070c4214</sid><ORCID>0000-0003-0355-6357</ORCID><firstname>Kelly</firstname><surname>Mackintosh</surname><name>Kelly Mackintosh</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2025-10-20</date><deptcode>MEDS</deptcode><abstract>In recent years, there has been growing interest regarding the impact of human movement quality on health. However, assessing movement quality outside of laboratories or clinics remains challenging. This study aimed to evaluate the capabilities of consumer-grade wearables to assess movement quality and to consider optimal sensor locations. Twenty-two participants wore Polar Verity Sense magnetic, angular rate, and gravity (MARG) sensors on their chest and both wrists, thighs, and ankles, while performing repeated bodyweight movements. The Madgwick sensor-fusion algorithm was utilized to obtain three-dimensional orientations. Concurrent validity, quantified using the root-mean-square-error (RMSE), was established against a Vicon optical motion capture system following time-synchronization and coordinate-system alignment. The chest sensors demonstrated the highest accuracies overall, with mean RMSE ( RMSEmean ) less than 9.0° across all movements. In contrast, the wrist sensors varied considerably ( 5.5∘≤RMSEmean≤139.1∘ ). Ankle and thigh sensors yielded mixed results, with the RMSEmean ranging from 2.0° to 40.0°. Notably, yaw angles consistently demonstrated higher discrepancies overall, while pitch and roll were relatively more stable. This study highlights the potential of consumer-grade MARG sensors to increase the real-world applicability and accessibility of complex biomechanical models. It also accentuates the requirement for strategic sensor placement and refined calibration and postprocessing methods to ensure accuracy.</abstract><type>Journal Article</type><journal>Wearable Technologies</journal><volume>6</volume><journalNumber/><paginationStart/><paginationEnd/><publisher>Cambridge University Press (CUP)</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint/><issnElectronic>2631-7176</issnElectronic><keywords>wearable technology; IMU; motion capture; motor skills; exercise; physical activity</keywords><publishedDay>19</publishedDay><publishedMonth>11</publishedMonth><publishedYear>2025</publishedYear><publishedDate>2025-11-19</publishedDate><doi>10.1017/wtc.2025.10034</doi><url/><notes/><college>COLLEGE NANME</college><department>Medical School</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>MEDS</DepartmentCode><institution>Swansea University</institution><apcterm>SU Library paid the OA fee (TA Institutional Deal)</apcterm><funders>Polar Electro Oy</funders><projectreference/><lastEdited>2025-11-21T15:30:38.2537230</lastEdited><Created>2025-10-20T12:28:56.0568731</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Sport and Exercise Sciences</level></path><authors><author><firstname>Alex</firstname><surname>Swain</surname><order>1</order></author><author><firstname>Melitta</firstname><surname>McNarry</surname><orcid>0000-0003-0813-7477</orcid><order>2</order></author><author><firstname>Samuel</firstname><surname>Manzano-Carrasco</surname><order>3</order></author><author><firstname>Kelly</firstname><surname>Mackintosh</surname><orcid>0000-0003-0355-6357</orcid><order>4</order></author></authors><documents><document><filename>70731__35685__57306780aa2747649b53dcf0a221925e.pdf</filename><originalFilename>70731.VoR.pdf</originalFilename><uploaded>2025-11-21T15:27:26.4285871</uploaded><type>Output</type><contentLength>966609</contentLength><contentType>application/pdf</contentType><version>Version of Record</version><cronfaStatus>true</cronfaStatus><documentNotes>© The Author(s), 2025. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence.</documentNotes><copyrightCorrect>true</copyrightCorrect><language>eng</language><licence>http://creativecommons.org/licenses/by/4.0</licence></document></documents><OutputDurs/></rfc1807> |
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2025-11-21T15:30:38.2537230 v2 70731 2025-10-20 Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality e58af411e7a9cdf4197ff81cad1eb321 Alex Swain Alex Swain true false 062f5697ff59f004bc8c713955988398 0000-0003-0813-7477 Melitta McNarry Melitta McNarry true false bdb20e3f31bcccf95c7bc116070c4214 0000-0003-0355-6357 Kelly Mackintosh Kelly Mackintosh true false 2025-10-20 MEDS In recent years, there has been growing interest regarding the impact of human movement quality on health. However, assessing movement quality outside of laboratories or clinics remains challenging. This study aimed to evaluate the capabilities of consumer-grade wearables to assess movement quality and to consider optimal sensor locations. Twenty-two participants wore Polar Verity Sense magnetic, angular rate, and gravity (MARG) sensors on their chest and both wrists, thighs, and ankles, while performing repeated bodyweight movements. The Madgwick sensor-fusion algorithm was utilized to obtain three-dimensional orientations. Concurrent validity, quantified using the root-mean-square-error (RMSE), was established against a Vicon optical motion capture system following time-synchronization and coordinate-system alignment. The chest sensors demonstrated the highest accuracies overall, with mean RMSE ( RMSEmean ) less than 9.0° across all movements. In contrast, the wrist sensors varied considerably ( 5.5∘≤RMSEmean≤139.1∘ ). Ankle and thigh sensors yielded mixed results, with the RMSEmean ranging from 2.0° to 40.0°. Notably, yaw angles consistently demonstrated higher discrepancies overall, while pitch and roll were relatively more stable. This study highlights the potential of consumer-grade MARG sensors to increase the real-world applicability and accessibility of complex biomechanical models. It also accentuates the requirement for strategic sensor placement and refined calibration and postprocessing methods to ensure accuracy. Journal Article Wearable Technologies 6 Cambridge University Press (CUP) 2631-7176 wearable technology; IMU; motion capture; motor skills; exercise; physical activity 19 11 2025 2025-11-19 10.1017/wtc.2025.10034 COLLEGE NANME Medical School COLLEGE CODE MEDS Swansea University SU Library paid the OA fee (TA Institutional Deal) Polar Electro Oy 2025-11-21T15:30:38.2537230 2025-10-20T12:28:56.0568731 Faculty of Science and Engineering School of Engineering and Applied Sciences - Sport and Exercise Sciences Alex Swain 1 Melitta McNarry 0000-0003-0813-7477 2 Samuel Manzano-Carrasco 3 Kelly Mackintosh 0000-0003-0355-6357 4 70731__35685__57306780aa2747649b53dcf0a221925e.pdf 70731.VoR.pdf 2025-11-21T15:27:26.4285871 Output 966609 application/pdf Version of Record true © The Author(s), 2025. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence. true eng http://creativecommons.org/licenses/by/4.0 |
| title |
Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality |
| spellingShingle |
Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality Alex Swain Melitta McNarry Kelly Mackintosh |
| title_short |
Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality |
| title_full |
Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality |
| title_fullStr |
Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality |
| title_full_unstemmed |
Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality |
| title_sort |
Assessing real-world movements using consumer-grade wearable devices: Measuring segment orientations and movement quality |
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e58af411e7a9cdf4197ff81cad1eb321 062f5697ff59f004bc8c713955988398 bdb20e3f31bcccf95c7bc116070c4214 |
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e58af411e7a9cdf4197ff81cad1eb321_***_Alex Swain 062f5697ff59f004bc8c713955988398_***_Melitta McNarry bdb20e3f31bcccf95c7bc116070c4214_***_Kelly Mackintosh |
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Alex Swain Melitta McNarry Kelly Mackintosh |
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Alex Swain Melitta McNarry Samuel Manzano-Carrasco Kelly Mackintosh |
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Wearable Technologies |
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6 |
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2025 |
| institution |
Swansea University |
| issn |
2631-7176 |
| doi_str_mv |
10.1017/wtc.2025.10034 |
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Cambridge University Press (CUP) |
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Faculty of Science and Engineering |
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| description |
In recent years, there has been growing interest regarding the impact of human movement quality on health. However, assessing movement quality outside of laboratories or clinics remains challenging. This study aimed to evaluate the capabilities of consumer-grade wearables to assess movement quality and to consider optimal sensor locations. Twenty-two participants wore Polar Verity Sense magnetic, angular rate, and gravity (MARG) sensors on their chest and both wrists, thighs, and ankles, while performing repeated bodyweight movements. The Madgwick sensor-fusion algorithm was utilized to obtain three-dimensional orientations. Concurrent validity, quantified using the root-mean-square-error (RMSE), was established against a Vicon optical motion capture system following time-synchronization and coordinate-system alignment. The chest sensors demonstrated the highest accuracies overall, with mean RMSE ( RMSEmean ) less than 9.0° across all movements. In contrast, the wrist sensors varied considerably ( 5.5∘≤RMSEmean≤139.1∘ ). Ankle and thigh sensors yielded mixed results, with the RMSEmean ranging from 2.0° to 40.0°. Notably, yaw angles consistently demonstrated higher discrepancies overall, while pitch and roll were relatively more stable. This study highlights the potential of consumer-grade MARG sensors to increase the real-world applicability and accessibility of complex biomechanical models. It also accentuates the requirement for strategic sensor placement and refined calibration and postprocessing methods to ensure accuracy. |
| published_date |
2025-11-19T05:35:39Z |
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11.098395 |

