Título artículo / Títol article:
Architectural, functional, and molecular responses to concentric and eccentric loading in human skeletal muscle
Autores / Autors
Martino V. Franchi, Philip J. Atherton, Neil D.
Reeves, Martin Flück, John Williams, William K.
Mitchell, Anna Selby, María Reyes Beltrán Valls, Marco Vincenzo Narici
Revista:
Acta Physiologica, v. 210, n. 3 (March 2014)
Versión / Versió:
Postprint de l’autor
Cita bibliográfica / Cita bibliogràfica (ISO 690):
FRANCHI, Martino V…[et al.]. Architectural, functional, and molecular responses to concentric and eccentric loading in human skeletal muscle. Acta Physiologica, v. 210, n. 3 (March 2014), pp. 642-654
url Repositori UJI:
http://repositori.uji.es/xmlui/handle/10234/123723
Accepted Article
This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as an 'Accepted Article', doi: 10.1111/apha.12225
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Architectural, functional, and molecular responses to concentric and eccentric loading in human skeletal muscle
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Authors Affiliation
1MRC-ARUK Centre of Excellence for Musculoskeletal Ageing Research, Division of Metabolic and Molecular Physiology, School of Graduate Entry Medicine and Health, University of Nottingham, Derby, UK
2Institute for Biomedical Research into Human Movement and Health, School of Healthcare Science, Manchester Metropolitan University, Manchester, UK
3Department of Orthopaedics, University of Zurich, Balgrist University Hospital, Zurich, Switzerland
Authors Contribution
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ABSTRACT
Aim: ǡ ǡ
ȋȌ ȋȌ ȋȌǤ Methods: ͳͲ ȋȌ
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Resultsǣ̱ͳǤʹǡ
ȋΪͺΨΪΨȌ ȋΪͻΨ
ΪͳͳΨȌǤǡ
ȋΪͳʹǤΪͷΨȌ ȋΪ͵Ͳ
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Accepted Article
ȋΪΪͺΨǤΪΪʹȌǦȋΪ
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Key words: Ȁ ǡ ǡ
Introduction
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ȋ ǤͳͻͻǢ Ƭ ͳͻͻȌǤDzdz ǡ
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Accepted Article
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et al.ȋͳͻͻȌǤȋǤǡʹͲͲͻȌǡ
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Accepted Article
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ȋǤʹͲͲȌ acuteǤ ǡ
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METHODS
ͳʹȋʹͷ±͵ǡαͳͺʹ±ͺǤͷ ǡαͳǤͻ±ͺǤͷǢά
Ȍ ͳͲǦ
Ǧ Ǥ ǡ
ȋ Ȍ ǣ ȋǡ
αǡʹͷ±͵Ȍȋǡαǡʹͷ±͵ȌǤ
Accepted Article
Ǧ ȋ ǡȌ
Ǧ ȋ ͳȌǣ ǡ
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̱ʹǡ̱͵Ǥ
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ǡ ǡ ͳͲǦ
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ͺͳͲǦǤ
ͳǦ
ͺ ͳͲ
ȋ Ȍ ȋ
ȌǤǡ
Ƭ ȋͳͻͻͶȌǤ
Accepted Article
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ǡ
Measurement of electromyographic (EMG) activity
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ʹͲ ǦǦ Ǥ
DzǦdz ǡ
Dzdzǡ ȋ ȌǤ
ȋ̻Ȍ
ȋ Ǧ ǡ ǡ Ȍ
ͷǡͲͲͲ Ǥ
ǡ ȋ
ǡ Ȍ
Ǥ
Ȁ ʹͲͲͲ
Ȃ ͳͲǦͷͲͲ Ǥ ȋȌ
ʹͲͲ
Ǥ ͳ ǡ
ͳ
ǣ ʹͲͲ
Accepted Article
Ǧ Ǥ
Magnetic Resonance images (MRI)
ȋͳȌǦȋͶǦͷȌ
ͲǤʹͷ ȋȌ ȋǦ ǡȌǤ
ͳǦ ȋ ͻͲͲ ǡ ǡ ʹ ǡ
ʹǡ ʹͲͲʹͲͲǡ ͳͲǡ
ǡͳǤͲȌ.
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Ǣǡ
Ǧȋ̱͵ͶȌǤ
ǡǡ ǣ
ȋ ͵ȌαΣȉȋ Ϊ ȌǤ
Ǧ ͷ
Ȁȋ Ȍͷ
ȋ Ȍǣ ǡ
͵ Ǥ
Accepted Article
Muscle (VL) Architecture
ȋͳȌȋͶǦͷȌǡ ǤǤǡ
ȋȌin vivoǦ
ȋͲǡ ǡȌǡͳͲͲǡͳͲǦͳͷǡǦ
Ǥ ȋͳͷͲ°Ȍǡ
ȋͳͺͲ°Ȍǡ
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ǡ ͳǤͶʹ ȋ ǡ ȌǤ
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ǡ
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ȋ Ǥ ʹͲͲͻȌǤ
ȋ ʹȌǤ
ȋαͲǤͻͻȌȋ
ǤʹͲͲͶȌǢ Ǥ
Muscle function
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ȋαͺͷ°ǡαͲ°ȌǤ
Accepted Article
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ȋ
ǡ ǤȌ ʹͲͲ
ȋ ǤͶȌǤ
ȋȌͳͲ͑ȋͲǤͳͷȌͻͲιͳͷͲιȋͳǤͷʹǤʹ Ȍ
ȋͳͺͲιαȌǤ ʹ
Ǥ
Acute behavioural and molecular responses to CON and ECC contraction
ͳͶ ȋʹͷάͶ ǡ α ͳͺͶ± ǡ α Ͷ±Ͷ Ȍ
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ȋ ǦǦ ȌǤ ȋȌ
͵Ͳ
ǣ
ȋƬʹͲͲͳȌǤ
Ǧ Ǥ
Ǥ
Accepted Article
Immunoblotting
ȋǡʹͲͳͲȌǤǡ̱ʹͲ Ǧ ȋͷͲ
ǦȋǤͶȌǡͷͲ ǡͳͲȾǦ ǡͳǡͳ
ǡ ͳ ͵Ͷȋ Ǧ ǡ ǡ ȌȌ
ȋ ǡ ǡ Ȍ ͳͲ ɊǤɊǦͳ Ǥ
ͳͲ
ͳ͵ǡͲͲͲ έ g ͷ ͶιǤ ȋ Ȍ
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ͳͲͲͲ ȋ ǡ Ǥǡ ǡ ǦȌ
ͳɊǤɊǦͳ͵έǤ Ǧ ͳʹΨǦ
ȋǡ ǡ Ȍ ͳͷ Ɋ
ʹͲͲͳǤǦͳͲͲͳ
ȋ Ȍ ȋͲǤʹʹ ɊȌǡ ͳ
ʹǤͷΨͳέǦȀǦʹͲȋǦȌǡ
ͳι ȋͳǣʹͲͲͲ ʹǤͷΨ ǦȌ ͶιǤ
͵ͺ ȋͳͺͻȀʹͲȌǡ ͻͲ ȋ͵ͷͻȀ͵͵Ȍǡ ͳȀʹ
ȋʹͲʹȀʹͲͶȌǡ Ͳ ȋ͵ͺͻȌǡ ȋͶ͵Ȍǡ ͷ ȋͷ͵Ȍ Ǧ
ǡ Ǥ ȋǡ Ȍǡ ͶǦͳ
ȋͷȀͲȌ ǡ Ǥ ȋ ǡ ǦȌ ǡ
Ǧͳ ȋǦ Ȍ ȋǡ ȌǤ αǡ
ͷ α ǡ Ǥ ȋǡȌ
ǡ͵έͷǦǡ Ǧ
ʹιȋǡǡǢͳǣʹͲͲͲ ʹǤͷΨǦȌ
ͳǡ͵έͷǦǤ
Accepted Article
ȋǡ ǡǦȌͷ
ȋǡǡȌǤ
Ǣ Ǧ Ǥ
Statistical analysis
Ȍȋvs.ǦȀvs.Ǧ Ȍ
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ȋͷǤͲǢ ǤǡȌǤ
Ǧ Ǥȋ∆Ȍ
ȋ Ȍ Ǧ
Ǥ ǣ
ͲǤͺȋǤǤǡͺͲΨȌȋͳʹ Ȍ
ͲǤͻ ȋǤǤǡ ͻͲΨȌ
ȋͳͶ Ȍ͵ͺǤ
RESULTS
EMG of CON-ECC 1-RM, maximum lifting or lowering ability (1-RM) and training load
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Ǧ ǡ
ͳǦ
Ǥ
Accepted Article
ͳǦͳǤ
ͳ
Ǥ ǡ
Ǥ ǡǡ
ǦͳǦ ȋ
ͳȌǡ ǡ
ȋͳ͵ʹͷͻʹǤͳͲͷͳʹͲǡδͲǤͲͳǡ
ͳͲǦȌǤȂǦ
ͳǦ ǡ
Ǥ
Muscle morphology and architecture and maximum voluntary contraction
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ͲǤͲͲͲͳȌǤ ǡ ȋ δ ͲǤͲͳȌ ȋͳʹ ά ʹΨǡ δ
ͲǤͲͲͲͳȌ ȋͷ ά ͳΨǡ δ ͲǤͲͳȌǢ
ȋȌ
Ψ ǡδͲǤͲͷǢ ͵ȌǤ
Accepted Article
Regional hypertrophy of VL muscle in response CON or ECC training
ͳͲǦ
ȋ ͶȌǤ
Ψ Ȁ ȋα ǦͳάͳΨǡάǡ
ΪʹάͳǤͷΨǡδͲǤͲͷȌǤ
Architectural behaviour of VL muscle during performance of CON vs. ECC contractions
ǡ
ǡ
Ǥ
Ǧ
ȋ ͷȌǤǡ ȋα
Ϊͳͻ ά ʹΨǡ ά ǡ ǡ δ ͲǤͲͲͲͳȌ
ȋ α Ǧͳͻ ά ʹΨǡ δ ͲǤͲͲͲͳȌǤ
ǡȋαǦ͵άͳΨǡε
ͲǤͲͷȌǡ ȋαΪʹͺάͳΨǡδͲǤͲͲͲͳȌǤ
Acute MAPK, AKT-mTOR and Inflammatory/breakdown signaling responses to a single acute bout of CON vs. ECC exercise
͵Ͳ
Ǥ
ȋȌ
ǤǤǡǦ͵ͺǡͳȀʹͻͲȋ Ȍ͵Ͳ
Accepted Article
ȋ͵ͺαʹͲάͶǦǡͳȀʹαʹάͲǤ͵ǦǡͻͲ α͵άͳǦȌ
Ǥ ǡ
ȋͶ͵Ȍ ȋȌ
Ͳ͵Ͳ ǡ ȋδͲǤͲͷȌ
ͶǦͳ ȋ ȌǤ Ǧ
α/ǦͳǦ ȋ αǡǦͷǡͷǡαǡ
Ǧ ǦͳǡǦ Ȍ͵Ͳ Ǥ
DISCUSSION
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ȋǡ ȌǤ ǡ
Ǧȋ ǤʹͲͲǢǤͳͻͻǢǤʹͲͳʹȌǡ
ǡǡ
Ǧ ȋ Ƭ ͳͻͷͶǢ Ƭǡ ʹͲͲͷǢ
ƬǡͳͻͻͻȌǤ ǡ
ȋǤǤǡͳͳȌ
ͳǦȋͳȌǤ
Ȁ ͳǤʹͳ ͳǤʹͻ
ȋͳȌǡ
in vivoȋǤʹͲͲͲǢǤͳͻͺͺȌǤ
Accepted Article
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Dzdz ǡ ͳ Ǯ ǯ
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Ȍ Ǥ
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per seǡ
Ǥǡ
ȋαΪαΪͺΨǡ ȌǤ
ȋǤʹͲͲȌǤǡ
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ǡ
ȋ ǡ
ǤͳͻͻȌ ȋǤʹͲͲͻȌǤ
ǡ
ȋǤǤ ȌǤǡ ǡ
Ǣ ǡ
ȋȀȌ
Accepted Article
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ȋǤǤ Ǥ ͳͻͺͲǢ Ǥ ʹͲͲͻǢ Ǥ ʹͲͲȌǡ
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ȋ Ƭ ͳͻͷǢ Ǥ
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ǤȋǤʹͲͲͻȌǤ
ǡ pure
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ȋ
Ȍǡ
ǡǤ
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ȋ Ȍ
ǡ ȋ Ǥ ͶȌǤ
Accepted Article
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ȋƬ ͳͻͷȌǤ ǡ
ȋ͵ͲΨȌǡ
ȋͷΨȌǡ
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ȋ Ǥ ʹͲͲͺȌ ȋ Ȍǡ
ǡǡ
ȋǤʹͲͲͺȌǤ
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Accepted Article
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Accepted Article
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ȋ ǦͳͻΨȌ ȋΪͳͻΨȌ Ǥ
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ǡet al.ȋǤ
Accepted Article
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͵ͺǡͳȀʹͻͲǤǡ
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