Validity and Reliability of Thoracic-Mounted Inertial Measurement Units to Derive Gait Characteristics During Running
Horsley, BJ, Tofari, PJ, Halson, SL, Kemp, JG, Chalkley, D, Cole, MH, Johnston, RD, and Cormack, SJ. Validity and reliability of thoracic-mounted inertial measurement units to derive gait characteristics during running. J Strength Cond Res 38(2): 274-282, 2024-Inertial measurement units (IMUs) attac...
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| description | Horsley, BJ, Tofari, PJ, Halson, SL, Kemp, JG, Chalkley, D, Cole, MH, Johnston, RD, and Cormack, SJ. Validity and reliability of thoracic-mounted inertial measurement units to derive gait characteristics during running. J Strength Cond Res 38(2): 274-282, 2024-Inertial measurement units (IMUs) attached to the tibia or lumbar spine can be used to analyze running gait but, with team-sports, are often contained in global navigation satellite system (GNSS) units worn on the thoracic spine. We assessed the validity and reliability of thoracic-mounted IMUs to derive gait characteristics, including peak vertical ground reaction force (vGRF peak ) and vertical stiffness (K vert ). Sixteen recreationally active subjects performed 40 m run throughs at 3-4, 5-6, and 7-8 m·s -1 . Inertial measurement units were attached to the tibia, lumbar, and thoracic spine, whereas 2 GNSS units were also worn on the thoracic spine. Initial contact (IC) from a validated algorithm was evaluated with F1 score and agreement (mean difference ± SD ) of gait data with the tibia and lumbar spine using nonparametric limits of agreement (LoA). Test-retest error {coefficient of variation, CV (95% confidence interval [CI])} established reliability. Thoracic IMUs detected a nearly perfect proportion (F1 ≥ 0.95) of IC events compared with tibia and lumbar sites. Step length had the strongest agreement (0 ± 0.04 m) at 3-4 m·s -1 , whereas contact time improved from 3 to 4 (-0.028 ± 0.018 second) to 7-8 m·s -1 (-0.004 ± 0.013 second). All values for K vert fell within the LoA at 7-8 m·s -1 . Test-retest error was ≤12.8% for all gait characteristics obtained from GNSS units, where K vert was most reliable at 3-4 m·s -1 (6.8% [5.2, 9.6]) and vGRF peak at 7-8 m·s -1 (3.7% [2.5, 5.2]). The thoracic-spine site is suitable to derive gait characteristics, including K vert , from IMUs within GNSS units, eliminating the need for additional sensors to analyze running gait. |
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Validity and reliability of thoracic-mounted inertial measurement units to derive gait characteristics during running. J Strength Cond Res 38(2): 274-282, 2024-Inertial measurement units (IMUs) attached to the tibia or lumbar spine can be used to analyze running gait but, with team-sports, are often contained in global navigation satellite system (GNSS) units worn on the thoracic spine. We assessed the validity and reliability of thoracic-mounted IMUs to derive gait characteristics, including peak vertical ground reaction force (vGRF peak ) and vertical stiffness (K vert ). Sixteen recreationally active subjects performed 40 m run throughs at 3-4, 5-6, and 7-8 m·s -1 . Inertial measurement units were attached to the tibia, lumbar, and thoracic spine, whereas 2 GNSS units were also worn on the thoracic spine. Initial contact (IC) from a validated algorithm was evaluated with F1 score and agreement (mean difference ± SD ) of gait data with the tibia and lumbar spine using nonparametric limits of agreement (LoA). Test-retest error {coefficient of variation, CV (95% confidence interval [CI])} established reliability. Thoracic IMUs detected a nearly perfect proportion (F1 ≥ 0.95) of IC events compared with tibia and lumbar sites. Step length had the strongest agreement (0 ± 0.04 m) at 3-4 m·s -1 , whereas contact time improved from 3 to 4 (-0.028 ± 0.018 second) to 7-8 m·s -1 (-0.004 ± 0.013 second). All values for K vert fell within the LoA at 7-8 m·s -1 . Test-retest error was ≤12.8% for all gait characteristics obtained from GNSS units, where K vert was most reliable at 3-4 m·s -1 (6.8% [5.2, 9.6]) and vGRF peak at 7-8 m·s -1 (3.7% [2.5, 5.2]). The thoracic-spine site is suitable to derive gait characteristics, including K vert , from IMUs within GNSS units, eliminating the need for additional sensors to analyze running gait.</description><identifier>ISSN: 1064-8011</identifier><identifier>EISSN: 1533-4287</identifier><identifier>DOI: 10.1519/JSC.0000000000004612</identifier><identifier>PMID: 37884006</identifier><language>eng</language><publisher>United States: Lippincott Williams & Wilkins Ovid Technologies</publisher><subject>Gait ; Spine (lumbar) ; Spine (thoracic) ; Tibia ; Validity</subject><ispartof>Journal of strength and conditioning research, 2024-02, Vol.38 (2), p.274-282</ispartof><rights>Copyright © 2023 National Strength and Conditioning Association.</rights><rights>2023 National Strength and Conditioning Association</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c284t-d070773917a269ac38a9510a29555a3843b6859d05a80fe50632e7b68b2f85353</cites><orcidid>0000-0002-4872-007 ; 0000-0002-4872-007X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37884006$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Horsley, Benjamin J</creatorcontrib><creatorcontrib>Tofari, Paul J</creatorcontrib><creatorcontrib>Halson, Shona L</creatorcontrib><creatorcontrib>Kemp, Justin G</creatorcontrib><creatorcontrib>Chalkley, Daniel</creatorcontrib><creatorcontrib>Cole, Michael H</creatorcontrib><creatorcontrib>Johnston, Rich D</creatorcontrib><creatorcontrib>Cormack, Stuart J</creatorcontrib><title>Validity and Reliability of Thoracic-Mounted Inertial Measurement Units to Derive Gait Characteristics During Running</title><title>Journal of strength and conditioning research</title><addtitle>J Strength Cond Res</addtitle><description>Horsley, BJ, Tofari, PJ, Halson, SL, Kemp, JG, Chalkley, D, Cole, MH, Johnston, RD, and Cormack, SJ. Validity and reliability of thoracic-mounted inertial measurement units to derive gait characteristics during running. J Strength Cond Res 38(2): 274-282, 2024-Inertial measurement units (IMUs) attached to the tibia or lumbar spine can be used to analyze running gait but, with team-sports, are often contained in global navigation satellite system (GNSS) units worn on the thoracic spine. We assessed the validity and reliability of thoracic-mounted IMUs to derive gait characteristics, including peak vertical ground reaction force (vGRF peak ) and vertical stiffness (K vert ). Sixteen recreationally active subjects performed 40 m run throughs at 3-4, 5-6, and 7-8 m·s -1 . Inertial measurement units were attached to the tibia, lumbar, and thoracic spine, whereas 2 GNSS units were also worn on the thoracic spine. Initial contact (IC) from a validated algorithm was evaluated with F1 score and agreement (mean difference ± SD ) of gait data with the tibia and lumbar spine using nonparametric limits of agreement (LoA). Test-retest error {coefficient of variation, CV (95% confidence interval [CI])} established reliability. Thoracic IMUs detected a nearly perfect proportion (F1 ≥ 0.95) of IC events compared with tibia and lumbar sites. Step length had the strongest agreement (0 ± 0.04 m) at 3-4 m·s -1 , whereas contact time improved from 3 to 4 (-0.028 ± 0.018 second) to 7-8 m·s -1 (-0.004 ± 0.013 second). All values for K vert fell within the LoA at 7-8 m·s -1 . Test-retest error was ≤12.8% for all gait characteristics obtained from GNSS units, where K vert was most reliable at 3-4 m·s -1 (6.8% [5.2, 9.6]) and vGRF peak at 7-8 m·s -1 (3.7% [2.5, 5.2]). The thoracic-spine site is suitable to derive gait characteristics, including K vert , from IMUs within GNSS units, eliminating the need for additional sensors to analyze running gait.</description><subject>Gait</subject><subject>Spine (lumbar)</subject><subject>Spine (thoracic)</subject><subject>Tibia</subject><subject>Validity</subject><issn>1064-8011</issn><issn>1533-4287</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNpdUclKBDEUDKK4_4FIwIuXHrN20keZcWVEGEevzZvutBPpSWsWwb83gwviu7yFqqIehdARJSMqaXV2-zAekT8lSso20C6VnBeCabWZZ1KKQhNKd9BeCC-EMCkl30Y7XGktCCl3UXqC3rY2fmBwLZ6Z3sLC9ut96PB8OXhobFPcDclF0-IbZ3y00OM7AyF5szIu4kdnY8BxwBPj7bvBV2AjHi8hU2O-hGibgCfJW_eMZ8m53A_QVgd9MIfffR89Xl7Mx9fF9P7qZnw-LRqmRSxaoohSvKIKWFlBwzVUkhJgVf4DuBZ8UWpZtUSCJp2RpOTMqHxbsE5LLvk-Ov3SffXDWzIh1isbGtP34MyQQs205lIpxmiGnvyDvgzJu-yuZtmAJJoKkVHiC9X4IQRvuvrV2xX4j5qSeh1LnWOp_8eSacff4mmxMu0v6ScH_gnNeYby</recordid><startdate>20240201</startdate><enddate>20240201</enddate><creator>Horsley, Benjamin J</creator><creator>Tofari, Paul J</creator><creator>Halson, Shona L</creator><creator>Kemp, Justin G</creator><creator>Chalkley, Daniel</creator><creator>Cole, Michael H</creator><creator>Johnston, Rich D</creator><creator>Cormack, Stuart J</creator><general>Lippincott Williams & Wilkins Ovid Technologies</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TS</scope><scope>K9.</scope><scope>NAPCQ</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-4872-007</orcidid><orcidid>https://orcid.org/0000-0002-4872-007X</orcidid></search><sort><creationdate>20240201</creationdate><title>Validity and Reliability of Thoracic-Mounted Inertial Measurement Units to Derive Gait Characteristics During Running</title><author>Horsley, Benjamin J ; Tofari, Paul J ; Halson, Shona L ; Kemp, Justin G ; Chalkley, Daniel ; Cole, Michael H ; Johnston, Rich D ; Cormack, Stuart J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c284t-d070773917a269ac38a9510a29555a3843b6859d05a80fe50632e7b68b2f85353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Gait</topic><topic>Spine (lumbar)</topic><topic>Spine (thoracic)</topic><topic>Tibia</topic><topic>Validity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Horsley, Benjamin J</creatorcontrib><creatorcontrib>Tofari, Paul J</creatorcontrib><creatorcontrib>Halson, Shona L</creatorcontrib><creatorcontrib>Kemp, Justin G</creatorcontrib><creatorcontrib>Chalkley, Daniel</creatorcontrib><creatorcontrib>Cole, Michael H</creatorcontrib><creatorcontrib>Johnston, Rich D</creatorcontrib><creatorcontrib>Cormack, Stuart J</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>Physical Education Index</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of strength and conditioning research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Horsley, Benjamin J</au><au>Tofari, Paul J</au><au>Halson, Shona L</au><au>Kemp, Justin G</au><au>Chalkley, Daniel</au><au>Cole, Michael H</au><au>Johnston, Rich D</au><au>Cormack, Stuart J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Validity and Reliability of Thoracic-Mounted Inertial Measurement Units to Derive Gait Characteristics During Running</atitle><jtitle>Journal of strength and conditioning research</jtitle><addtitle>J Strength Cond Res</addtitle><date>2024-02-01</date><risdate>2024</risdate><volume>38</volume><issue>2</issue><spage>274</spage><epage>282</epage><pages>274-282</pages><issn>1064-8011</issn><eissn>1533-4287</eissn><abstract>Horsley, BJ, Tofari, PJ, Halson, SL, Kemp, JG, Chalkley, D, Cole, MH, Johnston, RD, and Cormack, SJ. Validity and reliability of thoracic-mounted inertial measurement units to derive gait characteristics during running. J Strength Cond Res 38(2): 274-282, 2024-Inertial measurement units (IMUs) attached to the tibia or lumbar spine can be used to analyze running gait but, with team-sports, are often contained in global navigation satellite system (GNSS) units worn on the thoracic spine. We assessed the validity and reliability of thoracic-mounted IMUs to derive gait characteristics, including peak vertical ground reaction force (vGRF peak ) and vertical stiffness (K vert ). Sixteen recreationally active subjects performed 40 m run throughs at 3-4, 5-6, and 7-8 m·s -1 . Inertial measurement units were attached to the tibia, lumbar, and thoracic spine, whereas 2 GNSS units were also worn on the thoracic spine. Initial contact (IC) from a validated algorithm was evaluated with F1 score and agreement (mean difference ± SD ) of gait data with the tibia and lumbar spine using nonparametric limits of agreement (LoA). Test-retest error {coefficient of variation, CV (95% confidence interval [CI])} established reliability. Thoracic IMUs detected a nearly perfect proportion (F1 ≥ 0.95) of IC events compared with tibia and lumbar sites. Step length had the strongest agreement (0 ± 0.04 m) at 3-4 m·s -1 , whereas contact time improved from 3 to 4 (-0.028 ± 0.018 second) to 7-8 m·s -1 (-0.004 ± 0.013 second). All values for K vert fell within the LoA at 7-8 m·s -1 . Test-retest error was ≤12.8% for all gait characteristics obtained from GNSS units, where K vert was most reliable at 3-4 m·s -1 (6.8% [5.2, 9.6]) and vGRF peak at 7-8 m·s -1 (3.7% [2.5, 5.2]). The thoracic-spine site is suitable to derive gait characteristics, including K vert , from IMUs within GNSS units, eliminating the need for additional sensors to analyze running gait.</abstract><cop>United States</cop><pub>Lippincott Williams & Wilkins Ovid Technologies</pub><pmid>37884006</pmid><doi>10.1519/JSC.0000000000004612</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-4872-007</orcidid><orcidid>https://orcid.org/0000-0002-4872-007X</orcidid></addata></record> |
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| subjects | Gait Spine (lumbar) Spine (thoracic) Tibia Validity |
| title | Validity and Reliability of Thoracic-Mounted Inertial Measurement Units to Derive Gait Characteristics During Running |
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