Sarcomere length of the vastus intermedius with the knee joint angle change
Abstract The force–length relation of the skeletal muscles is an important factor influencing the joint torque at a given joint angle. We aimed to clarify the relationship between the resting sarcomere length and knee joint angle in the vastus intermedius (VI) and to compare it with that of the vast...
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doaj-9da9467817aa4886aad1515b720f1f042021-03-13T18:00:35ZengWileyPhysiological Reports2051-817X2021-03-0195n/an/a10.14814/phy2.14771Sarcomere length of the vastus intermedius with the knee joint angle changeRyosuke Ando0Keigo Taniguchi1Shin Kikuchi2Shogo Mizoguchi3Mineko Fujimiya4Masaki Katayose5Hiroshi Akima6Department of Sports Research Japan Institute of Sports Sciences (JISS) Tokyo JapanSchool of Health Sciences Sapporo Medical University Sapporo JapanSchool of Medicine Sapporo Medical University Sapporo JapanSchool of Medicine Sapporo Medical University Sapporo JapanSchool of Medicine Sapporo Medical University Sapporo JapanSchool of Health Sciences Sapporo Medical University Sapporo JapanResearch Center of Health, Physical Fitness and SportsNagoya University Nagoya JapanAbstract The force–length relation of the skeletal muscles is an important factor influencing the joint torque at a given joint angle. We aimed to clarify the relationship between the resting sarcomere length and knee joint angle in the vastus intermedius (VI) and to compare it with that of the vastus lateralis (VL). The left and right legs were fixed at knee joint angles of 0° and 90°, respectively, in seven cadavers (age at the time of death: 70–91 years). Muscle tissues were dissected by necropsy of the VL and the VI, and electron microscopy images were obtained to calculate the sarcomere length. At knee joint angles of 0° and 90°, the VL sarcomere length was 2.28 ± 0.49 μm and 2.30 ± 0.48 μm, respectively, and the VI sarcomere length was 2.19 ± 0.35 μm and 2.46 ± 0.53 μm, respectively, with a significant difference between the two (p = 0.028). The magnitude of sarcomere length changes with knee joint angle changes was significantly greater for the VI (0.27 ± 0.20 μm) than for the VL (0.02 ± 0.09 μm) (p = 0.009). Thus, knee joint angle changes may affect the passive and active tension produced by the VI more than those produced by the VL.https://doi.org/10.14814/phy2.14771cadaverelectron microscopeforce–length relationquadriceps femoris |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ryosuke Ando Keigo Taniguchi Shin Kikuchi Shogo Mizoguchi Mineko Fujimiya Masaki Katayose Hiroshi Akima |
spellingShingle |
Ryosuke Ando Keigo Taniguchi Shin Kikuchi Shogo Mizoguchi Mineko Fujimiya Masaki Katayose Hiroshi Akima Sarcomere length of the vastus intermedius with the knee joint angle change Physiological Reports cadaver electron microscope force–length relation quadriceps femoris |
author_facet |
Ryosuke Ando Keigo Taniguchi Shin Kikuchi Shogo Mizoguchi Mineko Fujimiya Masaki Katayose Hiroshi Akima |
author_sort |
Ryosuke Ando |
title |
Sarcomere length of the vastus intermedius with the knee joint angle change |
title_short |
Sarcomere length of the vastus intermedius with the knee joint angle change |
title_full |
Sarcomere length of the vastus intermedius with the knee joint angle change |
title_fullStr |
Sarcomere length of the vastus intermedius with the knee joint angle change |
title_full_unstemmed |
Sarcomere length of the vastus intermedius with the knee joint angle change |
title_sort |
sarcomere length of the vastus intermedius with the knee joint angle change |
publisher |
Wiley |
series |
Physiological Reports |
issn |
2051-817X |
publishDate |
2021-03-01 |
description |
Abstract The force–length relation of the skeletal muscles is an important factor influencing the joint torque at a given joint angle. We aimed to clarify the relationship between the resting sarcomere length and knee joint angle in the vastus intermedius (VI) and to compare it with that of the vastus lateralis (VL). The left and right legs were fixed at knee joint angles of 0° and 90°, respectively, in seven cadavers (age at the time of death: 70–91 years). Muscle tissues were dissected by necropsy of the VL and the VI, and electron microscopy images were obtained to calculate the sarcomere length. At knee joint angles of 0° and 90°, the VL sarcomere length was 2.28 ± 0.49 μm and 2.30 ± 0.48 μm, respectively, and the VI sarcomere length was 2.19 ± 0.35 μm and 2.46 ± 0.53 μm, respectively, with a significant difference between the two (p = 0.028). The magnitude of sarcomere length changes with knee joint angle changes was significantly greater for the VI (0.27 ± 0.20 μm) than for the VL (0.02 ± 0.09 μm) (p = 0.009). Thus, knee joint angle changes may affect the passive and active tension produced by the VI more than those produced by the VL. |
topic |
cadaver electron microscope force–length relation quadriceps femoris |
url |
https://doi.org/10.14814/phy2.14771 |
work_keys_str_mv |
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