Reciprocal angular acceleration of the ankle and hip joints during quiet standing in humans
Human quiet standing is often modeled as a single inverted pendulum rotating around the ankle joint, under the assumption that movement around the hip joint is quite small. However, several recent studies have shown that movement around the hip joint can play a significant role in the efficient main...
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| Veröffentlicht in: | Experimental brain research 2001-02, Vol.136 (4), p.463-473 |
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| creator | ARAMAKI, Yu NOZAKI, Daichi MASANI, Kei SATO, Takeshi NAKAZAWA, Kimitaka YANO, Hideo |
| description | Human quiet standing is often modeled as a single inverted pendulum rotating around the ankle joint, under the assumption that movement around the hip joint is quite small. However, several recent studies have shown that movement around the hip joint can play a significant role in the efficient maintenance of the center of body mass (COM) above the support area. The aim of this study was to investigate how coordination between the hip and ankle joints is controlled during human quiet standing. Subjects stood quietly for 30 s with their eyes either opened (EO) or closed (EC), and we measured subtle angular displacements around the ankle (thetaa) and hip (thetah) joints using three highly sensitive CCD laser displacement sensors. Reliable data were obtained for both angular displacement and angular velocity (the first derivative of the angular displacement). Further, measurement error was not predominant, even among the angular acceleration data, which were obtained by taking the second derivative of the angular displacement. The angular displacement, velocity, and acceleration of the hip were found to be significantly greater (P |
| doi_str_mv | 10.1007/s002210000603 |
| format | Article |
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However, several recent studies have shown that movement around the hip joint can play a significant role in the efficient maintenance of the center of body mass (COM) above the support area. The aim of this study was to investigate how coordination between the hip and ankle joints is controlled during human quiet standing. Subjects stood quietly for 30 s with their eyes either opened (EO) or closed (EC), and we measured subtle angular displacements around the ankle (thetaa) and hip (thetah) joints using three highly sensitive CCD laser displacement sensors. Reliable data were obtained for both angular displacement and angular velocity (the first derivative of the angular displacement). Further, measurement error was not predominant, even among the angular acceleration data, which were obtained by taking the second derivative of the angular displacement. The angular displacement, velocity, and acceleration of the hip were found to be significantly greater (P<0.001) than those of the ankle, confirming that hip-joint motion cannot be ignored, even during quiet standing. We also found that a consistent reciprocal relationship exists between the angular accelerations of the hip and ankle joints, namely positive or negative angular acceleration of ankle joint is compensated for by oppositely directed angular acceleration of the hip joint. Principal component analysis revealed that this relationship can be expressed as: thetah=gammathetaa with gamma=-3.15+/-1.24 and gamma=-3.12+/-1.46 (mean +/-SD) for EO and EC, respectively, where theta is the angular acceleration. There was no significant difference in the values of y for EO and EC, and these values were in agreement with the theoretical value calculated assuming the acceleration of COM was zero. On the other hand, such a consistent relationship was never observed for angular displacement itself. These results suggest that the angular motions around the hip and ankle joints are not to keep the COM at a constant position, but rather to minimize acceleration of the COM.</description><identifier>ISSN: 0014-4819</identifier><identifier>EISSN: 1432-1106</identifier><identifier>DOI: 10.1007/s002210000603</identifier><identifier>PMID: 11291727</identifier><identifier>CODEN: EXBRAP</identifier><language>eng</language><publisher>Berlin: Springer</publisher><subject>Acceleration ; Adult ; Ankle ; Ankle Joint - physiology ; Biological and medical sciences ; Biomechanical Phenomena ; Body mass ; Fundamental and applied biological sciences. Psychology ; Hip ; Hip joint ; Hip Joint - physiology ; Humans ; Lasers ; Male ; Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration ; Posture - physiology ; Principal components analysis ; Reproducibility of Results ; Velocity ; Vertebrates: nervous system and sense organs</subject><ispartof>Experimental brain research, 2001-02, Vol.136 (4), p.463-473</ispartof><rights>2001 INIST-CNRS</rights><rights>Springer-Verlag 2000.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c442t-97346eee5ba23a40d719ba85edd6fa05c3d5f6977500e53a8084d82358eeb8f33</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=922737$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11291727$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>ARAMAKI, Yu</creatorcontrib><creatorcontrib>NOZAKI, Daichi</creatorcontrib><creatorcontrib>MASANI, Kei</creatorcontrib><creatorcontrib>SATO, Takeshi</creatorcontrib><creatorcontrib>NAKAZAWA, Kimitaka</creatorcontrib><creatorcontrib>YANO, Hideo</creatorcontrib><title>Reciprocal angular acceleration of the ankle and hip joints during quiet standing in humans</title><title>Experimental brain research</title><addtitle>Exp Brain Res</addtitle><description>Human quiet standing is often modeled as a single inverted pendulum rotating around the ankle joint, under the assumption that movement around the hip joint is quite small. However, several recent studies have shown that movement around the hip joint can play a significant role in the efficient maintenance of the center of body mass (COM) above the support area. The aim of this study was to investigate how coordination between the hip and ankle joints is controlled during human quiet standing. Subjects stood quietly for 30 s with their eyes either opened (EO) or closed (EC), and we measured subtle angular displacements around the ankle (thetaa) and hip (thetah) joints using three highly sensitive CCD laser displacement sensors. Reliable data were obtained for both angular displacement and angular velocity (the first derivative of the angular displacement). Further, measurement error was not predominant, even among the angular acceleration data, which were obtained by taking the second derivative of the angular displacement. The angular displacement, velocity, and acceleration of the hip were found to be significantly greater (P<0.001) than those of the ankle, confirming that hip-joint motion cannot be ignored, even during quiet standing. We also found that a consistent reciprocal relationship exists between the angular accelerations of the hip and ankle joints, namely positive or negative angular acceleration of ankle joint is compensated for by oppositely directed angular acceleration of the hip joint. Principal component analysis revealed that this relationship can be expressed as: thetah=gammathetaa with gamma=-3.15+/-1.24 and gamma=-3.12+/-1.46 (mean +/-SD) for EO and EC, respectively, where theta is the angular acceleration. There was no significant difference in the values of y for EO and EC, and these values were in agreement with the theoretical value calculated assuming the acceleration of COM was zero. On the other hand, such a consistent relationship was never observed for angular displacement itself. These results suggest that the angular motions around the hip and ankle joints are not to keep the COM at a constant position, but rather to minimize acceleration of the COM.</description><subject>Acceleration</subject><subject>Adult</subject><subject>Ankle</subject><subject>Ankle Joint - physiology</subject><subject>Biological and medical sciences</subject><subject>Biomechanical Phenomena</subject><subject>Body mass</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Hip</subject><subject>Hip joint</subject><subject>Hip Joint - physiology</subject><subject>Humans</subject><subject>Lasers</subject><subject>Male</subject><subject>Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration</subject><subject>Posture - physiology</subject><subject>Principal components analysis</subject><subject>Reproducibility of Results</subject><subject>Velocity</subject><subject>Vertebrates: nervous system and sense organs</subject><issn>0014-4819</issn><issn>1432-1106</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqFkb1PwzAQxS0EoqUwsiJLSGyBsx3HzogQX1IlJAQTQ-Qml9YldVo7GfjvcdSKr4XF9tP9dHfPj5BTBpcMQF0FAM7jCyADsUfGLBU8YQyyfTIGYGmSapaPyFEIy0EKBYdkxBjPmeJqTN6esbRr35amocbN-8Z4asoSG_Sms62jbU27BcbaezOcFV3YNV221nWBVr23bk43vcWOhi5WB2kdXfQr48IxOahNE_Bkd0_I693ty81DMn26f7y5niZlmvIuyZVIM0SUM8OFSaFSLJ8ZLbGqstqALEUl6yxXSgKgFEaDTivNhdSIM10LMSEX277Rx6bH0BUrG6KFxjhs-1AoBSKP3_AvyDSTOpM6gud_wGXbexdNFFyxuB8DmUcq2VKlb0PwWBdrb1fGfxQMiiGc4lc4kT_bde1nK6y-6V0aP8aaEAOpvXGlDV9cziOjxCcipZT0</recordid><startdate>20010201</startdate><enddate>20010201</enddate><creator>ARAMAKI, Yu</creator><creator>NOZAKI, Daichi</creator><creator>MASANI, Kei</creator><creator>SATO, Takeshi</creator><creator>NAKAZAWA, Kimitaka</creator><creator>YANO, Hideo</creator><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><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>0-V</scope><scope>3V.</scope><scope>7QP</scope><scope>7QR</scope><scope>7RV</scope><scope>7TK</scope><scope>7TM</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>88G</scope><scope>88J</scope><scope>8AO</scope><scope>8FD</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ALSLI</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>K9.</scope><scope>KB0</scope><scope>M0S</scope><scope>M1P</scope><scope>M2M</scope><scope>M2R</scope><scope>NAPCQ</scope><scope>P64</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PSYQQ</scope><scope>Q9U</scope><scope>RC3</scope><scope>7TS</scope><scope>7X8</scope></search><sort><creationdate>20010201</creationdate><title>Reciprocal angular acceleration of the ankle and hip joints during quiet standing in humans</title><author>ARAMAKI, Yu ; NOZAKI, Daichi ; MASANI, Kei ; SATO, Takeshi ; NAKAZAWA, Kimitaka ; YANO, Hideo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c442t-97346eee5ba23a40d719ba85edd6fa05c3d5f6977500e53a8084d82358eeb8f33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Acceleration</topic><topic>Adult</topic><topic>Ankle</topic><topic>Ankle Joint - physiology</topic><topic>Biological and medical sciences</topic><topic>Biomechanical Phenomena</topic><topic>Body mass</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Hip</topic><topic>Hip joint</topic><topic>Hip Joint - physiology</topic><topic>Humans</topic><topic>Lasers</topic><topic>Male</topic><topic>Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration</topic><topic>Posture - physiology</topic><topic>Principal components analysis</topic><topic>Reproducibility of Results</topic><topic>Velocity</topic><topic>Vertebrates: nervous system and sense organs</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>ARAMAKI, Yu</creatorcontrib><creatorcontrib>NOZAKI, Daichi</creatorcontrib><creatorcontrib>MASANI, Kei</creatorcontrib><creatorcontrib>SATO, Takeshi</creatorcontrib><creatorcontrib>NAKAZAWA, Kimitaka</creatorcontrib><creatorcontrib>YANO, Hideo</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Social Sciences Premium Collection</collection><collection>ProQuest Central (Corporate)</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Nursing & Allied Health Database</collection><collection>Neurosciences Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Psychology Database (Alumni)</collection><collection>Social Science Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Social Science Premium Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Database (Alumni Edition)</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Psychology Database</collection><collection>Social Science Database</collection><collection>Nursing & Allied Health Premium</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>ProQuest One Psychology</collection><collection>ProQuest Central Basic</collection><collection>Genetics Abstracts</collection><collection>Physical Education Index</collection><collection>MEDLINE - Academic</collection><jtitle>Experimental brain research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>ARAMAKI, Yu</au><au>NOZAKI, Daichi</au><au>MASANI, Kei</au><au>SATO, Takeshi</au><au>NAKAZAWA, Kimitaka</au><au>YANO, Hideo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reciprocal angular acceleration of the ankle and hip joints during quiet standing in humans</atitle><jtitle>Experimental brain research</jtitle><addtitle>Exp Brain Res</addtitle><date>2001-02-01</date><risdate>2001</risdate><volume>136</volume><issue>4</issue><spage>463</spage><epage>473</epage><pages>463-473</pages><issn>0014-4819</issn><eissn>1432-1106</eissn><coden>EXBRAP</coden><abstract>Human quiet standing is often modeled as a single inverted pendulum rotating around the ankle joint, under the assumption that movement around the hip joint is quite small. However, several recent studies have shown that movement around the hip joint can play a significant role in the efficient maintenance of the center of body mass (COM) above the support area. The aim of this study was to investigate how coordination between the hip and ankle joints is controlled during human quiet standing. Subjects stood quietly for 30 s with their eyes either opened (EO) or closed (EC), and we measured subtle angular displacements around the ankle (thetaa) and hip (thetah) joints using three highly sensitive CCD laser displacement sensors. Reliable data were obtained for both angular displacement and angular velocity (the first derivative of the angular displacement). Further, measurement error was not predominant, even among the angular acceleration data, which were obtained by taking the second derivative of the angular displacement. The angular displacement, velocity, and acceleration of the hip were found to be significantly greater (P<0.001) than those of the ankle, confirming that hip-joint motion cannot be ignored, even during quiet standing. We also found that a consistent reciprocal relationship exists between the angular accelerations of the hip and ankle joints, namely positive or negative angular acceleration of ankle joint is compensated for by oppositely directed angular acceleration of the hip joint. Principal component analysis revealed that this relationship can be expressed as: thetah=gammathetaa with gamma=-3.15+/-1.24 and gamma=-3.12+/-1.46 (mean +/-SD) for EO and EC, respectively, where theta is the angular acceleration. There was no significant difference in the values of y for EO and EC, and these values were in agreement with the theoretical value calculated assuming the acceleration of COM was zero. On the other hand, such a consistent relationship was never observed for angular displacement itself. These results suggest that the angular motions around the hip and ankle joints are not to keep the COM at a constant position, but rather to minimize acceleration of the COM.</abstract><cop>Berlin</cop><pub>Springer</pub><pmid>11291727</pmid><doi>10.1007/s002210000603</doi><tpages>11</tpages></addata></record> |
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| subjects | Acceleration Adult Ankle Ankle Joint - physiology Biological and medical sciences Biomechanical Phenomena Body mass Fundamental and applied biological sciences. Psychology Hip Hip joint Hip Joint - physiology Humans Lasers Male Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration Posture - physiology Principal components analysis Reproducibility of Results Velocity Vertebrates: nervous system and sense organs |
| title | Reciprocal angular acceleration of the ankle and hip joints during quiet standing in humans |
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