Effects of muscle action type on corticospinal excitability and triceps surae muscle-tendon mechanics

Valadão, Pedro Frederico; Kurokawa, Sadao; Finni, Taija; Avela, Janne

doi:10.1152/jn.00079.2017

Cited by 5 publications

(10 citation statements)

References 154 publications

(257 reference statements)

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“…Furthermore, Duclay et al and Gruber et al showed that ECC contractions elicited greater modulation of corticospinal excitability from supraspinal centers (ie, enhanced motor cortical excitability and reduced spinal excitability) when compared to isometric or CON contractions . By contrast, Valadao et al showed no difference in corticospinal excitability between a single session of maximal isometric contractions and ECC contractions at fast or slow contraction velocities of the triceps surae muscle. The authors did, however, report a significant reduction in the cortical silent period duration following both ECC contraction conditions, when compared to isometric contractions.…”

Section: Introductionmentioning

confidence: 89%

Effects of eccentric versus concentric contractions of the biceps brachii on intracortical inhibition and facilitation

Latella

Goodwill

Muthalib

et al. 2018

Scandinavian Med Sci Sports

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Differences in the neural mechanisms underpinning eccentric (ECC) and concentric (CON) contractions exist; however, the acute effects of fatiguing muscle contractions on intracortical and corticospinal excitability are not well understood. Therefore, we compared maximal ECC and CON contractions of the right biceps brachii (BB) muscle for changes in corticospinal excitability, short‐ (SICI) and long‐interval intracortical inhibition (LICI) and intracortical facilitation (ICF) up to 1 hour post‐exercise. Fourteen right‐handed adults (11 M/3F; 26.8 ± 2.9 year) undertook a single session of 3 sets of 10 maximal ECC or CON contractions (180‐second rest between sets) on an isokinetic dynamometer (40°/s) separated by 1 week, in a randomized crossover study. Maximum voluntary isometric contraction torque (MVIC), maximal muscle compound waves (MMAX), and motor‐evoked potentials elicited through transcranial magnetic stimulation (TMS) were recorded via surface electromyography from the right BB. MVIC decreased (P < 0.001) immediately after ECC and CON contractions similarly, but the decrease was sustained at 1 hour post‐ECC contractions only. MMAX was reduced immediately (P = 0.014) and 1 hour post‐exercise (P = 0.019) only for ECC contractions. SICI and ICF increased immediately after ECC and CON contractions (P < 0.001), but LICI increased only after ECC contractions (P < 0.001), and these increases remained at 1 hour post‐ECC contractions only. These findings suggest that ECC contractions induced a longer‐lasting neuromodulatory effect on intracortical inhibition and facilitation, which could indicate a central compensatory response to peripheral fatigue.

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Section: Introductionmentioning

confidence: 89%

Effects of eccentric versus concentric contractions of the biceps brachii on intracortical inhibition and facilitation

Latella

Goodwill

Muthalib

et al. 2018

Scandinavian Med Sci Sports

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“…Isotonic movements modify corticospinal excitability, such that excitability tends to be lower during lengthening relative to shortening and isometric contractions (Abbruzzese et al 1994; Gruber et al 2009; Duclay et al 2014), which seems to depend on the amount of Ia afferent feedback (Doguet et al 2017). However, elucidating the direct effect of muscle length-related feedback on the corticospinal tract output during dynamic contractions is challenging due to the influence of postsynaptic control mechanisms (Valadão et al 2018; Barrué-Belou et al 2018), and potential differences in neural drive that can influence neurophysiological responses (Abbruzzese et al 1994; Morita et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Corticospinal excitability of tibialis anterior and soleus differs during passive ankle movement

et al. 2019

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The purpose of this study was to assess corticospinal excitability of soleus (SOL) and tibialis anterior (TA) at a segmental level during passive ankle movement. Four experimental components were performed to assess the effects of passive ankle movement and muscle length on corticospinal excitability (MEP/ M max ) at different muscle lengths, subcortical excitability at the level of lumbar spinal segments (LEP/ M max ), intracortical inhibition (SICI) and facilitation (ICF), and H -reflex in SOL and TA. In addition, the degree of fascicle length changes between SOL and TA was assessed in a subpopulation during passive ankle movement. Fascicles shortened and lengthened with joint movement during passive shortening and lengthening of SOL and TA to a similar degree ( p < 0.001). Resting motor threshold was greater in SOL compared to TA ( p ≤ 0.014). MEP/ M max was facilitated in TA during passive shortening relative to the static position ( p ≤ 0.023) and passive lengthening ( p ≤ 0.001), but remained similar during passive ankle movement in SOL ( p ≥ 0.497), regardless of muscle length at the point of stimulus ( p = 0.922). LEP/ M max (SOL: p = 0.075, TA: p = 0.071), SICI (SOL: p = 0.427, TA: p = 0.540), and ICF (SOL: p = 0.177, TA: p = 0.777) remained similar during passive ankle movement. H -reflex was not different across conditions in TA ( p = 0.258), but was reduced during passive lengthening compared to shortening in SOL ( p = 0.048). These results suggest a differential modulation of corticospinal excitability between plantar and dorsiflexors during passive movement. The corticospinal behaviour observed might be mediated by an increase in corticospinal drive as a result of reduced afferent input during muscle shortening and appears to be flexor-biased.

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“…Valadão, Kurokawa, Finni, and Avela () have recently reported a reduced neural activation (i.e. MEP/M, CSP and H reflex) of soleus muscle during maximal eccentric plantar flexions when compared with maximal isometric contractions, without differences in mechanical variables (i.e.…”

Section: Discussionmentioning

confidence: 98%

“…Hence, it seems that corticospinal inhibitions that occurred at long muscle lengths during eccentric contractions were not, at least directly, related to the extent of tension generated or fascicle stretching. Valadão, Kurokawa, Finni, and Avela (2018) As previously done by Ando et al (2018), we used two ultrasound probes attached in series to perform wider examination of the muscle architecture. Using this procedure, the width of the total scanned field reached 115 mm (including a 15 mm gap in the middle), which allowed us to scan full-size fascicles.…”

Section: Correlations Between Exercise Measurements and Indirect Markmentioning

confidence: 99%

Influence of fascicle strain and corticospinal excitability during eccentric contractions on force loss

Doguet

Nosaka

Guével

et al. 2019

Experimental Physiology

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New Findings What is the central question of this study?Do neural and/or mechanical factors determine the extent of muscle damage induced by eccentric contractions? What is the main finding and its importance?The extent of muscle damage induced by eccentric contractions is related to both mechanical strain and corticospinal excitability measured at long muscle lengths during eccentric contractions. Abstract In this study, we investigated whether the mechanical and neural characteristics of maximal voluntary eccentric contractions would determine the extent of change in postexercise maximal voluntary isometric contraction (MVC) torque and muscle soreness. Eleven men performed 10 sets of 15 isokinetic (45 deg s−1) maximal voluntary eccentric knee extensions. Knee‐extension torque and vastus lateralis fascicle length were assessed at sets 1, 5 and 9. Vastus lateralis motor evoked potential, maximal M wave (MEP/M) and the cortical silent period (CSP) were measured at 75 and 100 deg of knee flexion (0 deg = full extension) during contractions and were normalized to MEP/M (MEP/Mecc/iso) and CSP (CSPecc/iso) recorded during isometric MVC at each angle. The MVC torque and muscle soreness of the knee extensors were assessed before, 24, 48 and 96 h after the eccentric contractions. The extent of relative decrease in MVC torque at 24 h postexercise (r2 = 0.38) and peak muscle soreness (r2 = 0.69) were correlated (P < 0.05) with MEP/Mecc/iso measured at 100 deg, but not at 75 deg. The average torque on the descending limb of the torque–angle relationship (r2 = 0.16), fascicle elongation (r2 = 0.18) and CSPecc/iso at both 75 (r2 = 0.00) and 100 deg (r2 = 0.02) were not significantly correlated with the relative decrease in MVC torque. The relative decrease in MVC torque was best predicted by a combination of mean torque on the descending limb, fascicle elongation and MEP/Mecc/iso (R2 = 0.93). It is concluded that the extent of muscle damage based on the reduction in MVC torque is determined by mechanical strain and corticospinal excitability at long muscle lengths during maximal voluntary eccentric contractions.

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Effects of muscle action type on corticospinal excitability and triceps surae muscle-tendon mechanics

Cited by 5 publications

References 154 publications

Effects of eccentric versus concentric contractions of the biceps brachii on intracortical inhibition and facilitation

Effects of eccentric versus concentric contractions of the biceps brachii on intracortical inhibition and facilitation

Corticospinal excitability of tibialis anterior and soleus differs during passive ankle movement

Influence of fascicle strain and corticospinal excitability during eccentric contractions on force loss

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