Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping
Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable m...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Auyang, Arick G. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2008 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag 2008 |
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| Übergeordnetes Werk: |
Enthalten in: Experimental brain research - Berlin : Springer, 1966, 192(2008), 2 vom: 07. Okt., Seite 253-264 |
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| Übergeordnetes Werk: |
volume:192 ; year:2008 ; number:2 ; day:07 ; month:10 ; pages:253-264 |
| Links: |
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| DOI / URN: |
10.1007/s00221-008-1582-7 |
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SPR002404400 |
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| 100 | 1 | |a Auyang, Arick G. |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping |
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| 520 | |a Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. | ||
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| 650 | 4 | |a Hopping |7 (dpeaa)DE-He213 | |
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| 700 | 1 | |a Yen, Jasper T. |4 aut | |
| 700 | 1 | |a Chang, Young-Hui |4 aut | |
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10.1007/s00221-008-1582-7 doi (DE-627)SPR002404400 (SPR)s00221-008-1582-7-e DE-627 ger DE-627 rakwb eng Auyang, Arick G. verfasserin aut Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping 2008 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2008 Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. UCM (dpeaa)DE-He213 Biomechanics (dpeaa)DE-He213 Locomotion (dpeaa)DE-He213 Hopping (dpeaa)DE-He213 Spring-mass model (dpeaa)DE-He213 Yen, Jasper T. aut Chang, Young-Hui aut Enthalten in Experimental brain research Berlin : Springer, 1966 192(2008), 2 vom: 07. Okt., Seite 253-264 (DE-627)253723159 (DE-600)1459099-2 1432-1106 nnns volume:192 year:2008 number:2 day:07 month:10 pages:253-264 https://dx.doi.org/10.1007/s00221-008-1582-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 192 2008 2 07 10 253-264 |
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10.1007/s00221-008-1582-7 doi (DE-627)SPR002404400 (SPR)s00221-008-1582-7-e DE-627 ger DE-627 rakwb eng Auyang, Arick G. verfasserin aut Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping 2008 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2008 Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. UCM (dpeaa)DE-He213 Biomechanics (dpeaa)DE-He213 Locomotion (dpeaa)DE-He213 Hopping (dpeaa)DE-He213 Spring-mass model (dpeaa)DE-He213 Yen, Jasper T. aut Chang, Young-Hui aut Enthalten in Experimental brain research Berlin : Springer, 1966 192(2008), 2 vom: 07. Okt., Seite 253-264 (DE-627)253723159 (DE-600)1459099-2 1432-1106 nnns volume:192 year:2008 number:2 day:07 month:10 pages:253-264 https://dx.doi.org/10.1007/s00221-008-1582-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 192 2008 2 07 10 253-264 |
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10.1007/s00221-008-1582-7 doi (DE-627)SPR002404400 (SPR)s00221-008-1582-7-e DE-627 ger DE-627 rakwb eng Auyang, Arick G. verfasserin aut Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping 2008 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2008 Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. UCM (dpeaa)DE-He213 Biomechanics (dpeaa)DE-He213 Locomotion (dpeaa)DE-He213 Hopping (dpeaa)DE-He213 Spring-mass model (dpeaa)DE-He213 Yen, Jasper T. aut Chang, Young-Hui aut Enthalten in Experimental brain research Berlin : Springer, 1966 192(2008), 2 vom: 07. Okt., Seite 253-264 (DE-627)253723159 (DE-600)1459099-2 1432-1106 nnns volume:192 year:2008 number:2 day:07 month:10 pages:253-264 https://dx.doi.org/10.1007/s00221-008-1582-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 192 2008 2 07 10 253-264 |
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10.1007/s00221-008-1582-7 doi (DE-627)SPR002404400 (SPR)s00221-008-1582-7-e DE-627 ger DE-627 rakwb eng Auyang, Arick G. verfasserin aut Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping 2008 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2008 Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. UCM (dpeaa)DE-He213 Biomechanics (dpeaa)DE-He213 Locomotion (dpeaa)DE-He213 Hopping (dpeaa)DE-He213 Spring-mass model (dpeaa)DE-He213 Yen, Jasper T. aut Chang, Young-Hui aut Enthalten in Experimental brain research Berlin : Springer, 1966 192(2008), 2 vom: 07. Okt., Seite 253-264 (DE-627)253723159 (DE-600)1459099-2 1432-1106 nnns volume:192 year:2008 number:2 day:07 month:10 pages:253-264 https://dx.doi.org/10.1007/s00221-008-1582-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 192 2008 2 07 10 253-264 |
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10.1007/s00221-008-1582-7 doi (DE-627)SPR002404400 (SPR)s00221-008-1582-7-e DE-627 ger DE-627 rakwb eng Auyang, Arick G. verfasserin aut Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping 2008 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2008 Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. UCM (dpeaa)DE-He213 Biomechanics (dpeaa)DE-He213 Locomotion (dpeaa)DE-He213 Hopping (dpeaa)DE-He213 Spring-mass model (dpeaa)DE-He213 Yen, Jasper T. aut Chang, Young-Hui aut Enthalten in Experimental brain research Berlin : Springer, 1966 192(2008), 2 vom: 07. Okt., Seite 253-264 (DE-627)253723159 (DE-600)1459099-2 1432-1106 nnns volume:192 year:2008 number:2 day:07 month:10 pages:253-264 https://dx.doi.org/10.1007/s00221-008-1582-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 192 2008 2 07 10 253-264 |
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Enthalten in Experimental brain research 192(2008), 2 vom: 07. Okt., Seite 253-264 volume:192 year:2008 number:2 day:07 month:10 pages:253-264 |
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Auyang, Arick G. @@aut@@ Yen, Jasper T. @@aut@@ Chang, Young-Hui @@aut@@ |
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Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. 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Auyang, Arick G. |
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Auyang, Arick G. misc UCM misc Biomechanics misc Locomotion misc Hopping misc Spring-mass model Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping |
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Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping UCM (dpeaa)DE-He213 Biomechanics (dpeaa)DE-He213 Locomotion (dpeaa)DE-He213 Hopping (dpeaa)DE-He213 Spring-mass model (dpeaa)DE-He213 |
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misc UCM misc Biomechanics misc Locomotion misc Hopping misc Spring-mass model |
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misc UCM misc Biomechanics misc Locomotion misc Hopping misc Spring-mass model |
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misc UCM misc Biomechanics misc Locomotion misc Hopping misc Spring-mass model |
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Elektronische Aufsätze Aufsätze Elektronische Ressource |
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Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping |
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Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping |
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Auyang, Arick G. |
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Experimental brain research |
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Experimental brain research |
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Auyang, Arick G. Yen, Jasper T. Chang, Young-Hui |
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Auyang, Arick G. |
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10.1007/s00221-008-1582-7 |
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neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping |
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Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping |
| abstract |
Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. © Springer-Verlag 2008 |
| abstractGer |
Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. © Springer-Verlag 2008 |
| abstract_unstemmed |
Abstract Evidence for the simplification of motor control of the limbs through a reduction in the number of degrees of freedom exists in areas of research such as neuroscience, robotics, and biomechanics. Human hopping in place can be modeled well with spring-mass dynamics and provides a tractable model by which to study how the locomotor system compensates through inter-joint coordination to achieve stability of performance variables, leg length and orientation. This study provides the first evidence for how the redundancy of human leg joints may be simply coordinated to stabilize spring-mass dynamics throughout the hopping cycle using an uncontrolled manifold (UCM) analysis. We use a UCM analysis to quantify the structure of joint variance that stabilizes the hypothesized performance variables, leg length and leg orientation. For one-legged human hopping in place, we hypothesized that leg length and orientation would each be stabilized throughout the entire hopping cycle. We also hypothesized that hopping at non-preferred frequencies would be more difficult for subjects and stabilization of leg length and orientation would increase. Kinematic data from eleven subjects hopping at three frequencies (2.2, 2.8, and 3.2 Hz) were collected and analyzed within the framework of the UCM. Maximum leg length stabilization was observed at mid-stance when leg length was most susceptible to small changes in joint angles. Overall stabilization of leg length increased as subjects hopped at higher frequencies, reflecting the increased demands on the control system. The stabilization of leg orientation during aerial phase acted to position the foot at initial contact to determine velocity and trajectory of the center of mass during the stance phase. Because hopping in place does not require a change in forward velocity, the control strategy for leg orientation remained the same across frequencies. We conclude that stabilization of leg length and orientation may signify a reduction in degrees of freedom in the control system. © Springer-Verlag 2008 |
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| title_short |
Neuromechanical stabilization of leg length and orientation through interjoint compensation during human hopping |
| url |
https://dx.doi.org/10.1007/s00221-008-1582-7 |
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| author2 |
Yen, Jasper T. Chang, Young-Hui |
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Yen, Jasper T. Chang, Young-Hui |
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| doi_str |
10.1007/s00221-008-1582-7 |
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2024-07-04T02:53:26.170Z |
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| score |
7.4013214 |