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Yasuo Kawakami - One of the best experts on this subject based on the ideXlab platform.
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In Vivo Length-Force Relationships on Muscle Fiber and Muscle Tendon Complex in the Tibialis Anterior Muscle
International Journal of Sport and Health Science, 2020Co-Authors: Hiroaki Kanehisa, Toshihiko Nagayoshi, Toshiyuki Kurihara, Tetsuo Fukunaga, Kentaro Chino, Emika Kato, Yasuo KawakamiAbstract:The present study aimed to determine the differences in the length-force relationship between Muscle fiber and Muscle tendon complex (MTC) and to relate the shape of the length-force relationship to the architectural changes in MTC (the elongation of tendon structures and pennation angle changes). In six male subjects, tetanic contractions (2s at 50Hz) of the Tibialis Anterior Muscle were induced electrically. At a steady state of tetanic contraction, the Muscle fiber length and pennation angle were measured from ultrasonic images, and the Muscle fiber force, tendon force, MTC length and elongation of tendon structures were calculated. The measured and normalized length-force relationships were clearly different between Muscle fiber and MTC, especially on the length axis. The differences could be attributed to the existence of compliant tendon structures and increment of pennation angles related to elongation of tendon structures, suggesting that compliant tendon structures in human Muscles influence the length-dependent force generation in both Muscle fiber and MTC.
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In vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Toshiaki Oda, Dean C Hay, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Ryutaro Himeno, Yasuo KawakamiAbstract:In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30??, 10?? and -10?? plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10-30 ms delay of each onset, with a significant difference in half relaxation times at -10??. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length-force properties, whose slope of quasi-linear part was ranged from -15.0 to -5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity-force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle-tendon interaction, depending on the slack and non-linearity of length-force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics. ?? 2007 Elsevier Ltd. All rights reserved.
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in vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Ryutaro Himeno, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Yasuo KawakamiAbstract:Abstract In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30°, 10° and −10° plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10–30 ms delay of each onset, with a significant difference in half relaxation times at −10°. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length–force properties, whose slope of quasi-linear part was ranged from −15.0 to −5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity–force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle–tendon interaction, depending on the slack and non-linearity of length–force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics.
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in vivo mechanical properties of proximal and distal aponeuroses in human Tibialis Anterior Muscle
Cells Tissues Organs, 2002Co-Authors: Tadashi Muramatsu, Yasuo Kawakami, Tetsuro Muraoka, Daisuke Takeshita, Tetsuo FukunagaAbstract:Load-strain characteristics of distal (deep) and proximal (superficial) aponeuroses were determined in vivo for human Tibialis Anterior Muscle (TA). Seven male subjects exerted isometric dorsiflexion
Tetsuo Fukunaga - One of the best experts on this subject based on the ideXlab platform.
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In Vivo Length-Force Relationships on Muscle Fiber and Muscle Tendon Complex in the Tibialis Anterior Muscle
International Journal of Sport and Health Science, 2020Co-Authors: Hiroaki Kanehisa, Toshihiko Nagayoshi, Toshiyuki Kurihara, Tetsuo Fukunaga, Kentaro Chino, Emika Kato, Yasuo KawakamiAbstract:The present study aimed to determine the differences in the length-force relationship between Muscle fiber and Muscle tendon complex (MTC) and to relate the shape of the length-force relationship to the architectural changes in MTC (the elongation of tendon structures and pennation angle changes). In six male subjects, tetanic contractions (2s at 50Hz) of the Tibialis Anterior Muscle were induced electrically. At a steady state of tetanic contraction, the Muscle fiber length and pennation angle were measured from ultrasonic images, and the Muscle fiber force, tendon force, MTC length and elongation of tendon structures were calculated. The measured and normalized length-force relationships were clearly different between Muscle fiber and MTC, especially on the length axis. The differences could be attributed to the existence of compliant tendon structures and increment of pennation angles related to elongation of tendon structures, suggesting that compliant tendon structures in human Muscles influence the length-dependent force generation in both Muscle fiber and MTC.
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In vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Toshiaki Oda, Dean C Hay, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Ryutaro Himeno, Yasuo KawakamiAbstract:In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30??, 10?? and -10?? plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10-30 ms delay of each onset, with a significant difference in half relaxation times at -10??. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length-force properties, whose slope of quasi-linear part was ranged from -15.0 to -5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity-force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle-tendon interaction, depending on the slack and non-linearity of length-force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics. ?? 2007 Elsevier Ltd. All rights reserved.
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in vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Ryutaro Himeno, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Yasuo KawakamiAbstract:Abstract In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30°, 10° and −10° plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10–30 ms delay of each onset, with a significant difference in half relaxation times at −10°. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length–force properties, whose slope of quasi-linear part was ranged from −15.0 to −5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity–force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle–tendon interaction, depending on the slack and non-linearity of length–force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics.
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in vivo mechanical properties of proximal and distal aponeuroses in human Tibialis Anterior Muscle
Cells Tissues Organs, 2002Co-Authors: Tadashi Muramatsu, Yasuo Kawakami, Tetsuro Muraoka, Daisuke Takeshita, Tetsuo FukunagaAbstract:Load-strain characteristics of distal (deep) and proximal (superficial) aponeuroses were determined in vivo for human Tibialis Anterior Muscle (TA). Seven male subjects exerted isometric dorsiflexion
Ryutaro Himeno - One of the best experts on this subject based on the ideXlab platform.
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In vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Toshiaki Oda, Dean C Hay, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Ryutaro Himeno, Yasuo KawakamiAbstract:In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30??, 10?? and -10?? plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10-30 ms delay of each onset, with a significant difference in half relaxation times at -10??. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length-force properties, whose slope of quasi-linear part was ranged from -15.0 to -5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity-force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle-tendon interaction, depending on the slack and non-linearity of length-force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics. ?? 2007 Elsevier Ltd. All rights reserved.
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in vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Ryutaro Himeno, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Yasuo KawakamiAbstract:Abstract In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30°, 10° and −10° plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10–30 ms delay of each onset, with a significant difference in half relaxation times at −10°. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length–force properties, whose slope of quasi-linear part was ranged from −15.0 to −5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity–force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle–tendon interaction, depending on the slack and non-linearity of length–force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics.
Toshihiko Nagayoshi - One of the best experts on this subject based on the ideXlab platform.
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In Vivo Length-Force Relationships on Muscle Fiber and Muscle Tendon Complex in the Tibialis Anterior Muscle
International Journal of Sport and Health Science, 2020Co-Authors: Hiroaki Kanehisa, Toshihiko Nagayoshi, Toshiyuki Kurihara, Tetsuo Fukunaga, Kentaro Chino, Emika Kato, Yasuo KawakamiAbstract:The present study aimed to determine the differences in the length-force relationship between Muscle fiber and Muscle tendon complex (MTC) and to relate the shape of the length-force relationship to the architectural changes in MTC (the elongation of tendon structures and pennation angle changes). In six male subjects, tetanic contractions (2s at 50Hz) of the Tibialis Anterior Muscle were induced electrically. At a steady state of tetanic contraction, the Muscle fiber length and pennation angle were measured from ultrasonic images, and the Muscle fiber force, tendon force, MTC length and elongation of tendon structures were calculated. The measured and normalized length-force relationships were clearly different between Muscle fiber and MTC, especially on the length axis. The differences could be attributed to the existence of compliant tendon structures and increment of pennation angles related to elongation of tendon structures, suggesting that compliant tendon structures in human Muscles influence the length-dependent force generation in both Muscle fiber and MTC.
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In vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Toshiaki Oda, Dean C Hay, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Ryutaro Himeno, Yasuo KawakamiAbstract:In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30??, 10?? and -10?? plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10-30 ms delay of each onset, with a significant difference in half relaxation times at -10??. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length-force properties, whose slope of quasi-linear part was ranged from -15.0 to -5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity-force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle-tendon interaction, depending on the slack and non-linearity of length-force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics. ?? 2007 Elsevier Ltd. All rights reserved.
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in vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Ryutaro Himeno, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Yasuo KawakamiAbstract:Abstract In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30°, 10° and −10° plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10–30 ms delay of each onset, with a significant difference in half relaxation times at −10°. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length–force properties, whose slope of quasi-linear part was ranged from −15.0 to −5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity–force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle–tendon interaction, depending on the slack and non-linearity of length–force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics.
Toshiyuki Kurihara - One of the best experts on this subject based on the ideXlab platform.
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In Vivo Length-Force Relationships on Muscle Fiber and Muscle Tendon Complex in the Tibialis Anterior Muscle
International Journal of Sport and Health Science, 2020Co-Authors: Hiroaki Kanehisa, Toshihiko Nagayoshi, Toshiyuki Kurihara, Tetsuo Fukunaga, Kentaro Chino, Emika Kato, Yasuo KawakamiAbstract:The present study aimed to determine the differences in the length-force relationship between Muscle fiber and Muscle tendon complex (MTC) and to relate the shape of the length-force relationship to the architectural changes in MTC (the elongation of tendon structures and pennation angle changes). In six male subjects, tetanic contractions (2s at 50Hz) of the Tibialis Anterior Muscle were induced electrically. At a steady state of tetanic contraction, the Muscle fiber length and pennation angle were measured from ultrasonic images, and the Muscle fiber force, tendon force, MTC length and elongation of tendon structures were calculated. The measured and normalized length-force relationships were clearly different between Muscle fiber and MTC, especially on the length axis. The differences could be attributed to the existence of compliant tendon structures and increment of pennation angles related to elongation of tendon structures, suggesting that compliant tendon structures in human Muscles influence the length-dependent force generation in both Muscle fiber and MTC.
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In vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Toshiaki Oda, Dean C Hay, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Ryutaro Himeno, Yasuo KawakamiAbstract:In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30??, 10?? and -10?? plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10-30 ms delay of each onset, with a significant difference in half relaxation times at -10??. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length-force properties, whose slope of quasi-linear part was ranged from -15.0 to -5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity-force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle-tendon interaction, depending on the slack and non-linearity of length-force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics. ?? 2007 Elsevier Ltd. All rights reserved.
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in vivo behavior of Muscle fascicles and tendinous tissues in human Tibialis Anterior Muscle during twitch contraction
Journal of Biomechanics, 2007Co-Authors: Ryutaro Himeno, Toshihiko Nagayoshi, Toshiyuki Kurihara, Hiroaki Kanehisa, Tetsuo Fukunaga, Kentaro Chino, Yasuo KawakamiAbstract:Abstract In this study we investigated the time course of length and velocity of Muscle fascicles and tendinous tissues (TT) during isometric twitch contraction, and examined how their interaction relates to the time course of external torque and Muscle fascicle force generation. From seven males, supra-maximal twitch contractions (singlet) of the Tibialis Anterior Muscle were induced at 30°, 10° and −10° plantar flexed positions. The length and velocity of fascicles and TT were determined from a series of their transverse ultrasound images. The maximal external torque appeared when the shortening velocity of fascicles was zero. The fascicle and TT length, and external torque showed a 10–30 ms delay of each onset, with a significant difference in half relaxation times at −10°. The time course of TT elongation, and fascicle and tendinous velocities did not differ between joint angles. Curvilinear length–force properties, whose slope of quasi-linear part was ranged from −15.0 to −5.9 N/mm for fascicles and 5.4 to 14.3 N/mm for TT, and a loop-like pattern of velocity–force properties, in which the mean power was ranged from 0.14 to 0.80 W for fascicles, and 0.14 to 0.81 W for TT were also observed. These results were attributed to the Muscle–tendon interaction, depending on the slack and non-linearity of length–force relationship of compliant TT. We conclude that the mechanical interaction between fascicles and TT, are significant determinants of twitch force and time characteristics.
