Changes in muscle size, architecture, and neural activation after 20 days of bed rest with and without resistance exercise
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| Deutscher übersetzter Titel: | Änderungen in Muskelgröße und -architektur und in der neuromuskulären Erregbarkeit nach 20 tägiger Bettruhe mit und ohne Krafttraining |
|---|---|
| Autor: | Kawakami, Y.; Akima, H.; Kubo, K.; Muraoka, Y.; Hasegawa, H.; Kouzaki, M.; Imai, M.; Suzuki, Y.; Gunji, A.; Kanehisa, H.; Fukunaga, T. |
| Erschienen in: | European journal of applied physiology |
| Veröffentlicht: | 84 (2001), 1-2, S. 7-12, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
| Sprache: | Englisch |
| ISSN: | 1439-6319, 0301-5548 |
| DOI: | 10.1007/s004210000330 |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU199912501277 |
| Quelle: | BISp |
| id |
PU199912501277 |
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db |
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Literatur |
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2023-01-31T09:33:27Z |
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2001-07-24T13:58:31Z |
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BISp |
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Zeitschriftenartikel |
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JO00000100345 |
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JOI200198c60100345 |
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European journal of applied physiology |
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European journal of applied physiology, 2001, 1-2 |
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PU199912501277 |
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Changes in muscle size, architecture, and neural activation after 20 days of bed rest with and without resistance exercise |
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0007 |
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bisparticle |
| publishDate |
2001 |
| publishDate_facet |
2001 |
| language |
eng |
| title |
Changes in muscle size, architecture, and neural activation after 20 days of bed rest with and without resistance exercise |
| spellingShingle |
Changes in muscle size, architecture, and neural activation after 20 days of bed rest with and without resistance exercise Bettruhe Erregbarkeit, neuromuskuläre Kraftdefizit Krafttraining Muskelfunktion Muskelmorphologie Muskelquerschnitt Prävention Skelettmuskulatur Sportmedizin Training, präventives |
| title_sort |
changes in muscle size architecture and neural activation after 20 days of bed rest with and without resistance exercise |
| title_short |
Changes in muscle size, architecture, and neural activation after 20 days of bed rest with and without resistance exercise |
| title_alt |
Änderungen in Muskelgröße und -architektur und in der neuromuskulären Erregbarkeit nach 20 tägiger Bettruhe mit und ohne Krafttraining |
| title_alt_lang |
deu |
| media_type |
Gedruckte Ressource Elektronische Ressource (online) |
| city |
Berlin |
| abstract |
Nine healthy men carried out head-down bed rest (BR) for 20 days. Five subjects (TR) performed isometric, bilateral leg extension exercise every day, while the other four (NT) did not. Before and after BR, maximal isometric knee extension force was measured. Neural activation was assessed using a supramaximal twitch interpolated over voluntary contraction. From a series cross-sectional magnetic resonance imaging scans of the thigh, physiological cross-sectional areas (PCSA) of the quadriceps muscles were estimated (uncorrected PCSA, volume/estimated fibre length). Decrease in mean muscle force after BR was greater in NT (-10.9 (SD 6.9)%, P<0.05) than in TR (0.5 (SD 7.9)%, not significant). Neural activation did not differ between the two groups before BR, but after BR NT showed smaller activation levels. Pennation angles of the vastus lateralis muscle, determined by ultrasonography, showed no significant changes in either group. The PCSA decreased in NT by -7.8 (SD 0.8)% (P<0.05) while in TR PCSA showed only an insignificant tendency to decrease (-3.8 (SD 3.8)%). Changes in force were related more to changes in neural activation levels than to those in PCSA. The results suggest that reduction of muscle strength by BR is affected by a decreased ability to activate motor units, and that the exercise used in the present experiment is effective as a countermeasure. Verf.-Referat |
| abstract_lang |
eng |
| abstract_type |
author |
| author2 |
Kawakami, Y. Akima, H. Kubo, K. Muraoka, Y. Hasegawa, H. Kouzaki, M. Imai, M. Suzuki, Y. Gunji, A. Kanehisa, H. Fukunaga, T. |
| author_facet |
Kawakami, Y. Akima, H. Kubo, K. Muraoka, Y. Hasegawa, H. Kouzaki, M. Imai, M. Suzuki, Y. Gunji, A. Kanehisa, H. Fukunaga, T. |
| author2-role |
Autor Autor Autor Autor Autor Autor Autor Autor Autor Autor Autor |
| author2-authorityid |
|
| author_author_facet |
Kawakami, Y. Akima, H. Kubo, K. Muraoka, Y. Hasegawa, H. Kouzaki, M. Imai, M. Suzuki, Y. Gunji, A. Kanehisa, H. Fukunaga, T. |
| author2-synonym |
|
| author2_hierarchy_facet |
0/Autor/ 1/Autor/Kawakami, Y./ 0/Autor/ 1/Autor/Akima, H./ 0/Autor/ 1/Autor/Kubo, K./ 0/Autor/ 1/Autor/Muraoka, Y./ 0/Autor/ 1/Autor/Hasegawa, H./ 0/Autor/ 1/Autor/Kouzaki, M./ 0/Autor/ 1/Autor/Imai, M./ 0/Autor/ 1/Autor/Suzuki, Y./ 0/Autor/ 1/Autor/Gunji, A./ 0/Autor/ 1/Autor/Kanehisa, H./ 0/Autor/ 1/Autor/Fukunaga, T./ |
| doi |
10.1007/s004210000330 |
| spelling |
10.1007/s004210000330 1439-6319 0301-5548 EJAPC 124793-1 Bettruhe Erregbarkeit, neuromuskuläre Kraftdefizit Krafttraining Muskelfunktion Muskelmorphologie Muskelquerschnitt Prävention Skelettmuskulatur Sportmedizin Training, präventives bed, confinement to muscle cross-sectional area muscle function muscle morphology neuromuscular excitability prevention preventive training skeletal muscles sports medicine strength deficit strength training Kräftigung Kraftschulung Muskelkrafttraining Krafttraining, spezielles Muskelkräftigung Muskelaufbau Muskelgewebe Muskelstruktur Muskelerregbarkeit Gesundheitsvorsorge Maßnahme, präventive Präventivmedizin Prophylaxe Vorbeugung Gesundheitsförderung Muskulatur Skelettmuskel Muskel Medizin Geschichte der Medizin Untersuchung, sportmedizinische Wasserdampf bed rest resistance training Changes in muscle size, architecture, and neural activation after 20 days of bed rest with and without resistance exercise PU199912501277 199912501277 |
| url |
https://dx.doi.org/10.1007/s004210000330 |
| url-type |
fulltext |
| url-free |
1 |
| free_access |
1 |
| issn |
1439-6319 0301-5548 |
| coden |
EJAPC |
| zdb |
124793-1 |
| location_hierarchy_facet |
0/Deutschland/ 1/Deutschland/Berlin/ |
| topic |
Bettruhe Erregbarkeit, neuromuskuläre Kraftdefizit Krafttraining Muskelfunktion Muskelmorphologie Muskelquerschnitt Prävention Skelettmuskulatur Sportmedizin Training, präventives |
| topic_facet |
Bettruhe Erregbarkeit, neuromuskuläre Kraftdefizit Krafttraining Muskelfunktion Muskelmorphologie Muskelquerschnitt Prävention Skelettmuskulatur Sportmedizin Training, präventives |
| topic_en |
bed, confinement to muscle cross-sectional area muscle function muscle morphology neuromuscular excitability prevention preventive training skeletal muscles sports medicine strength deficit strength training |
| topic_en_facet |
bed, confinement to muscle cross-sectional area muscle function muscle morphology neuromuscular excitability prevention preventive training skeletal muscles sports medicine strength deficit strength training |
| synonym |
Kräftigung Kraftschulung Muskelkrafttraining Krafttraining, spezielles Muskelkräftigung Muskelaufbau Muskelgewebe Muskelstruktur Muskelerregbarkeit Gesundheitsvorsorge Maßnahme, präventive Präventivmedizin Prophylaxe Vorbeugung Gesundheitsförderung Muskulatur Skelettmuskel Muskel Medizin Geschichte der Medizin Untersuchung, sportmedizinische Wasserdampf |
| synonym_en |
bed rest resistance training |
| journal_facet |
European journal of applied physiology |
| container_title |
European journal of applied physiology |
| container_volume |
84 |
| container_issue |
1-2 |
| container_start_page |
S. 7-12 |
| has_references |
1 |
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BISp |
| journal_fac |
JO00000100345 |
| journal_year |
2001 |
| journal_issue |
1-2 |
| _version_ |
1791515893664055296 |
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13,548299 |