A novel method to quantify individual limb contributions to standing postural control
Understanding individual limb contributions to standing postural control is valuable when evaluating populations with asymmetric function (e.g., stroke, amputations). We propose a method of quantifying three contributions to controlling the net anteroposterior center of pressure (CoP) during quiet s...
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| Veröffentlicht in: | Gait & posture 2023-05, Vol.102, p.106-111 |
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| creator | Tracy, James B. Hafer, Jocelyn F. Buckley, Thomas A. Allen, Jessica L. Reimann, Hendrik Crenshaw, Jeremy R. |
| description | Understanding individual limb contributions to standing postural control is valuable when evaluating populations with asymmetric function (e.g., stroke, amputations). We propose a method of quantifying three contributions to controlling the net anteroposterior center of pressure (CoP) during quiet standing: CoP moving under left and right limbs and weight shifting between the two limbs.
Can these contributions to standing postural control be quantified from CoP trajectories in neurotypical adults?
Instantaneous contributions can be negative or larger than one, and integrated contributions sum to equal one. Proof-of-concept demonstrations validated these calculated contributions by restricting CoP motion under one or both feet. We evaluated these contributions in 30 neurotypical young adults who completed two (eyes opened; eyes closed) 30-s trials of bipedal standing. We evaluated the relationships between limb contributions, self-reported limb dominance, and between-limb weight distributions.
All participants self-reported as right-limb dominant; however, a range of mean limb contributions were observed with eyes opened (Left: mean [range] = 0.52 [0.37–0.63]; Right: 0.48 [0.31–0.63]) and with eyes closed (Left: 0.51 [0.39–0.63]; Right: 0.49 [0.37–0.61]). Weight-shift contributions were small with eyes opened (0.00 [−0.01 to 0.01]) and eyes closed (0.00 [−0.01 to 0.02]). We did not identify any between-limb differences in contributions when grouped by self-reported limb dominance (p > 0.10, d |
| doi_str_mv | 10.1016/j.gaitpost.2023.03.012 |
| format | Article |
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Can these contributions to standing postural control be quantified from CoP trajectories in neurotypical adults?
Instantaneous contributions can be negative or larger than one, and integrated contributions sum to equal one. Proof-of-concept demonstrations validated these calculated contributions by restricting CoP motion under one or both feet. We evaluated these contributions in 30 neurotypical young adults who completed two (eyes opened; eyes closed) 30-s trials of bipedal standing. We evaluated the relationships between limb contributions, self-reported limb dominance, and between-limb weight distributions.
All participants self-reported as right-limb dominant; however, a range of mean limb contributions were observed with eyes opened (Left: mean [range] = 0.52 [0.37–0.63]; Right: 0.48 [0.31–0.63]) and with eyes closed (Left: 0.51 [0.39–0.63]; Right: 0.49 [0.37–0.61]). Weight-shift contributions were small with eyes opened (0.00 [−0.01 to 0.01]) and eyes closed (0.00 [−0.01 to 0.02]). We did not identify any between-limb differences in contributions when grouped by self-reported limb dominance (p > 0.10, d < 0.31). Contributions did not significantly correlate with Waterloo Footedness scores (−0.22 < r < 0.21, p > 0.25) or between-limb weight distributions (0 < r < 0.24, p > 0.20).
Across neurotypical participants, we observed a notable range of limb contributions not related to self-reported limb dominance or between-limb weight distributions. With this tool, we can characterize differences in the amount of CoP motion and the underlying control strategies. Changes in limb contribution can be measured longitudinally (i.e., across rehabilitation programs, disease progression, aging) representative of limb function, which may be particularly useful in populations with asymmetric function.
•Each limb and between-limb weight shifts control anteroposterior center of pressure.•We quantified these three variable’s contributions to standing postural control.•We observed a range of limb contributions to the net center of pressure trajectory.•During quiet standing, shifting weight between limbs contributed little to control.•Limb dominance was not correlated to limb contributions.</description><identifier>ISSN: 0966-6362</identifier><identifier>EISSN: 1879-2219</identifier><identifier>DOI: 10.1016/j.gaitpost.2023.03.012</identifier><identifier>PMID: 36965400</identifier><language>eng</language><publisher>England: Elsevier B.V</publisher><subject>Balance ; Center of Pressure ; Foot ; Humans ; Laterality ; Limb Dominance ; Lower Extremity ; Postural Balance ; Postural Sway ; Standing Position ; Stroke ; Young Adult</subject><ispartof>Gait & posture, 2023-05, Vol.102, p.106-111</ispartof><rights>2023 Elsevier B.V.</rights><rights>Copyright © 2023 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c315t-6dfebe6b5a67444b8cfe8e4b2384394d85ab4a241209b341cf2000d6bd2150cb3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.gaitpost.2023.03.012$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,781,785,3551,27929,27930,46000</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/36965400$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Tracy, James B.</creatorcontrib><creatorcontrib>Hafer, Jocelyn F.</creatorcontrib><creatorcontrib>Buckley, Thomas A.</creatorcontrib><creatorcontrib>Allen, Jessica L.</creatorcontrib><creatorcontrib>Reimann, Hendrik</creatorcontrib><creatorcontrib>Crenshaw, Jeremy R.</creatorcontrib><title>A novel method to quantify individual limb contributions to standing postural control</title><title>Gait & posture</title><addtitle>Gait Posture</addtitle><description>Understanding individual limb contributions to standing postural control is valuable when evaluating populations with asymmetric function (e.g., stroke, amputations). We propose a method of quantifying three contributions to controlling the net anteroposterior center of pressure (CoP) during quiet standing: CoP moving under left and right limbs and weight shifting between the two limbs.
Can these contributions to standing postural control be quantified from CoP trajectories in neurotypical adults?
Instantaneous contributions can be negative or larger than one, and integrated contributions sum to equal one. Proof-of-concept demonstrations validated these calculated contributions by restricting CoP motion under one or both feet. We evaluated these contributions in 30 neurotypical young adults who completed two (eyes opened; eyes closed) 30-s trials of bipedal standing. We evaluated the relationships between limb contributions, self-reported limb dominance, and between-limb weight distributions.
All participants self-reported as right-limb dominant; however, a range of mean limb contributions were observed with eyes opened (Left: mean [range] = 0.52 [0.37–0.63]; Right: 0.48 [0.31–0.63]) and with eyes closed (Left: 0.51 [0.39–0.63]; Right: 0.49 [0.37–0.61]). Weight-shift contributions were small with eyes opened (0.00 [−0.01 to 0.01]) and eyes closed (0.00 [−0.01 to 0.02]). We did not identify any between-limb differences in contributions when grouped by self-reported limb dominance (p > 0.10, d < 0.31). Contributions did not significantly correlate with Waterloo Footedness scores (−0.22 < r < 0.21, p > 0.25) or between-limb weight distributions (0 < r < 0.24, p > 0.20).
Across neurotypical participants, we observed a notable range of limb contributions not related to self-reported limb dominance or between-limb weight distributions. With this tool, we can characterize differences in the amount of CoP motion and the underlying control strategies. Changes in limb contribution can be measured longitudinally (i.e., across rehabilitation programs, disease progression, aging) representative of limb function, which may be particularly useful in populations with asymmetric function.
•Each limb and between-limb weight shifts control anteroposterior center of pressure.•We quantified these three variable’s contributions to standing postural control.•We observed a range of limb contributions to the net center of pressure trajectory.•During quiet standing, shifting weight between limbs contributed little to control.•Limb dominance was not correlated to limb contributions.</description><subject>Balance</subject><subject>Center of Pressure</subject><subject>Foot</subject><subject>Humans</subject><subject>Laterality</subject><subject>Limb Dominance</subject><subject>Lower Extremity</subject><subject>Postural Balance</subject><subject>Postural Sway</subject><subject>Standing Position</subject><subject>Stroke</subject><subject>Young Adult</subject><issn>0966-6362</issn><issn>1879-2219</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkElPwzAQhS0EomX5C1WOXFK8xU1uIMQmVeJCz5aXCbhK4mI7lfj3uLTlijTSXL43b95DaEbwnGAibtfzD-XSxsc0p5iyOc5D6AmaknrRlJSS5hRNcSNEKZigE3QR4xpjzFlNz9GEiUZUHOMpWt0Xg99CV_SQPr0tki--RjUk134XbrBu6-youqJzvS6MH1JwekzOD3FHxqQyMnwUuz_GkLlfxHdX6KxVXYTrw75Eq6fH94eXcvn2_PpwvywNI1UqhW1Bg9CVEgvOua5NCzVwTVnNWcNtXSnNFeWE4kYzTkxLcwYrtKWkwkazS3Szv7sJ_muEmGTvooGuUwP4MUq6aEjOymuSUbFHTfAxBmjlJrhehW9JsNxVKtfyWKncVSpxHkKzcHbwGHUP9k927DADd3sActKtgyCjcTAYsC6ASdJ695_HD5RLjMo</recordid><startdate>202305</startdate><enddate>202305</enddate><creator>Tracy, James B.</creator><creator>Hafer, Jocelyn F.</creator><creator>Buckley, Thomas A.</creator><creator>Allen, Jessica L.</creator><creator>Reimann, Hendrik</creator><creator>Crenshaw, Jeremy R.</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202305</creationdate><title>A novel method to quantify individual limb contributions to standing postural control</title><author>Tracy, James B. ; Hafer, Jocelyn F. ; Buckley, Thomas A. ; Allen, Jessica L. ; Reimann, Hendrik ; Crenshaw, Jeremy R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c315t-6dfebe6b5a67444b8cfe8e4b2384394d85ab4a241209b341cf2000d6bd2150cb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Balance</topic><topic>Center of Pressure</topic><topic>Foot</topic><topic>Humans</topic><topic>Laterality</topic><topic>Limb Dominance</topic><topic>Lower Extremity</topic><topic>Postural Balance</topic><topic>Postural Sway</topic><topic>Standing Position</topic><topic>Stroke</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tracy, James B.</creatorcontrib><creatorcontrib>Hafer, Jocelyn F.</creatorcontrib><creatorcontrib>Buckley, Thomas A.</creatorcontrib><creatorcontrib>Allen, Jessica L.</creatorcontrib><creatorcontrib>Reimann, Hendrik</creatorcontrib><creatorcontrib>Crenshaw, Jeremy R.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Gait & posture</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tracy, James B.</au><au>Hafer, Jocelyn F.</au><au>Buckley, Thomas A.</au><au>Allen, Jessica L.</au><au>Reimann, Hendrik</au><au>Crenshaw, Jeremy R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A novel method to quantify individual limb contributions to standing postural control</atitle><jtitle>Gait & posture</jtitle><addtitle>Gait Posture</addtitle><date>2023-05</date><risdate>2023</risdate><volume>102</volume><spage>106</spage><epage>111</epage><pages>106-111</pages><issn>0966-6362</issn><eissn>1879-2219</eissn><abstract>Understanding individual limb contributions to standing postural control is valuable when evaluating populations with asymmetric function (e.g., stroke, amputations). We propose a method of quantifying three contributions to controlling the net anteroposterior center of pressure (CoP) during quiet standing: CoP moving under left and right limbs and weight shifting between the two limbs.
Can these contributions to standing postural control be quantified from CoP trajectories in neurotypical adults?
Instantaneous contributions can be negative or larger than one, and integrated contributions sum to equal one. Proof-of-concept demonstrations validated these calculated contributions by restricting CoP motion under one or both feet. We evaluated these contributions in 30 neurotypical young adults who completed two (eyes opened; eyes closed) 30-s trials of bipedal standing. We evaluated the relationships between limb contributions, self-reported limb dominance, and between-limb weight distributions.
All participants self-reported as right-limb dominant; however, a range of mean limb contributions were observed with eyes opened (Left: mean [range] = 0.52 [0.37–0.63]; Right: 0.48 [0.31–0.63]) and with eyes closed (Left: 0.51 [0.39–0.63]; Right: 0.49 [0.37–0.61]). Weight-shift contributions were small with eyes opened (0.00 [−0.01 to 0.01]) and eyes closed (0.00 [−0.01 to 0.02]). We did not identify any between-limb differences in contributions when grouped by self-reported limb dominance (p > 0.10, d < 0.31). Contributions did not significantly correlate with Waterloo Footedness scores (−0.22 < r < 0.21, p > 0.25) or between-limb weight distributions (0 < r < 0.24, p > 0.20).
Across neurotypical participants, we observed a notable range of limb contributions not related to self-reported limb dominance or between-limb weight distributions. With this tool, we can characterize differences in the amount of CoP motion and the underlying control strategies. Changes in limb contribution can be measured longitudinally (i.e., across rehabilitation programs, disease progression, aging) representative of limb function, which may be particularly useful in populations with asymmetric function.
•Each limb and between-limb weight shifts control anteroposterior center of pressure.•We quantified these three variable’s contributions to standing postural control.•We observed a range of limb contributions to the net center of pressure trajectory.•During quiet standing, shifting weight between limbs contributed little to control.•Limb dominance was not correlated to limb contributions.</abstract><cop>England</cop><pub>Elsevier B.V</pub><pmid>36965400</pmid><doi>10.1016/j.gaitpost.2023.03.012</doi><tpages>6</tpages></addata></record> |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Balance Center of Pressure Foot Humans Laterality Limb Dominance Lower Extremity Postural Balance Postural Sway Standing Position Stroke Young Adult |
| title | A novel method to quantify individual limb contributions to standing postural control |
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