Pubblicazioni

Autori:

Zambolin, Fabio; Laginestra, Fabio Giuseppe; Favaretto, Thomas; Giuriato, Gaia; Ottaviani, Matteo Maria; Schena, Federico; Duro-Ocana, Pablo; Mcphee, Jamie S; Venturelli, Massimo

Titolo:

Activation of skeletal muscle mechanoreceptors and nociceptors reduces the exercise performance of the contralateral homologous muscles

Anno:

2024

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Formato:

A Stampa

Referee:

Sì

Nome rivista:

AMERICAN JOURNAL OF PHYSIOLOGY. REGULATORY, INTEGRATIVE AND COMPARATIVE PHYSIOLOGY

ISSN Rivista:

0363-6119

N° Volume:

327

Numero o Fascicolo:

4

Intervallo pagine:

389-399

Parole chiave:

Exercise Performance; Exercise-Induced Muscle Damage; Fatigue; Muscle Nerve Afferents; Stretching

Breve descrizione dei contenuti:

Introduction: Increasing evidence suggests that activation of muscle nerve afferents may inhibit central motor drive, affecting contractile performance of remote exercising muscles. While these effects are well documented for metaboreceptors, very little is known about the activation of mechano- and mechano-nociceptive afferents on performance fatigability. Therefore, the purpose of the present study was to examine the influence of mechanoreceptors and nociceptors on performance fatigability. Methods: Eight healthy young males undertook four randomized experimental sessions on separate occasions in which the experimental knee extensors were: a) resting (CTRL), b) passively stretched (ST), c) resting with DOMS (DOMS), or d) passively stretched with DOMS (DOMS+ST), while the contralateral leg performed an isometric time to task failure (TTF). Changes in maximal voluntary contraction (ΔMVC), potentiated twitch force (ΔQtw,pot) and voluntary muscle activation (ΔVA) were also assessed. Results: TTF was reduced in DOMS+ST (-43%) and ST (‑29%) compared with CTRL. DOMS+ST also showed a greater reduction of VA (-25% vs ‑8%, respectively) and MVCcompared with CTRL (‑28% vs -45%, respectively). RPE was significantly increased at the initial stages (20-40-60%) of the TTF in DOMS+ST compared with all conditions. Conclusion: These findings indicate that activation of mechanosensitive and mechano-nociceptive afferents of a muscle with DOMS reduces TTF of the contralateral homologous exercising limb, in part by reducing VA so accelerating mechanisms of central fatigue.

Pagina Web:

https://doi.org/10.1152/ajpregu.00069.2024

Id prodotto:

141263

Handle IRIS:

11562/1138966

ultima modifica:

11 dicembre 2024

Citazione bibliografica:

Zambolin, Fabio; Laginestra, Fabio Giuseppe; Favaretto, Thomas; Giuriato, Gaia; Ottaviani, Matteo Maria; Schena, Federico; Duro-Ocana, Pablo; Mcphee, Jamie S; Venturelli, Massimo, Activation of skeletal muscle mechanoreceptors and nociceptors reduces the exercise performance of the contralateral homologous muscles «AMERICAN JOURNAL OF PHYSIOLOGY. REGULATORY, INTEGRATIVE AND COMPARATIVE PHYSIOLOGY» , vol. 327 , n. 4 , 2024 , pp. 389-399

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