| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lacourpaille, Lilian
Nantes Université
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2022Hamstring muscle activation strategies during eccentric contractions are related to the distribution of muscle damagecitations
- 2018Passive stiffness of monoarticular lower leg muscles is influenced by knee joint angle.citations
- 2017Cryotherapy induces an increase in muscle stiffness.citations
- 2017Early detection of exercise-induced muscle damage using elastography.citations
- 2017Effects of Duchenne muscular dystrophy on muscle stiffness and response to electrically-induced muscle contraction: A 12-month follow-up.citations
- 2017Effects of warm-up on hamstring muscles stiffness: Cycling vs foam rolling.citations
- 2017The nervous system does not compensate for an acute change in the balance of passive force between synergist muscles.citations
- 2014Time-course effect of exercise-induced muscle damage on localized muscle mechanical properties assessed using elastography.citations
Places of action
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article
Hamstring muscle activation strategies during eccentric contractions are related to the distribution of muscle damage
Abstract
<jats:p>Large inter‐individual variability of activation strategies is observed during hamstring strengthening exercises but their consequences remain unexplored. The objective of this study was to determine whether individual activation strategies are related to the distribution of damage across the hamstring muscle heads semimembranosus (SM), semitendinosus (ST), and biceps femoris (BF) after eccentric contractions. 24 participants performed 5 sets of 15 maximal eccentric contractions of knee flexors on a dynamometer, while activation of each muscle head was assessed using surface electromyography. Knee flexion maximal isometric strength was assessed before exercise and 48 h afterward. Shear modulus was measured using shear wave elastography before exercise and 30 min afterward to quantify the distribution of damage across the hamstring muscle heads. At 48 h, maximal knee flexion torque had decreased by 15.9% ± 16.9% (<jats:italic>p</jats:italic> < 0.001). Although no differences between activation ratios of each muscle were found during the eccentric exercise (all <jats:italic>p</jats:italic> > 0.364), we reported a heterogeneous distribution of damage, with a larger change in shear modulus of ST/Hams than SM/Hams (+70.8%, <jats:italic>p</jats:italic> < 0.001) or BF/Hams (+50.3%, <jats:italic>p</jats:italic> < 0.001). A large correlation was found between the distribution of activation and the distribution of damage for ST/Hams (<jats:italic>r</jats:italic> = 0.69; <jats:italic>p</jats:italic> < 001). This study provides evidence that the distribution of activation during maximal eccentric contractions has mechanical consequences for synergist muscles. Further studies are needed to understand whether individual activation strategies influence the distribution of structural adaptations after a training program.</jats:p>