Search

Your search keyword '"Barbi, Chiara"' showing total 9 results
Start Over Author "Barbi, Chiara" Search Limiters Available in Library Collection
9 results on '"Barbi, Chiara"'

6. Prior Involvement of Central Motor Drive Does Not Impact Performance and Neuromuscular Fatigue in a Subsequent Endurance Task

Author

LAGINESTRA, FABIO GIUSEPPE, primary, CAVICCHIA, ALESSANDRO, additional, VANEGAS-LOPEZ, JENNIFER E., additional, BARBI, CHIARA, additional, MARTIGNON, CAMILLA, additional, GIURIATO, GAIA, additional, PEDRINOLLA, ANNA, additional, AMANN, MARKUS, additional, HUREAU, THOMAS J., additional, and VENTURELLI, MASSIMO, additional

Published
2022
Full Text
View/download PDF

8. Electrically induced quadriceps fatigue in the contralateral leg impairs ipsilateral knee extensors performance

Author

Laginestra, Fabio Giuseppe, primary, Amann, Markus, additional, Kirmizi, Emine, additional, Giuriato, Gaia, additional, Barbi, Chiara, additional, Ruzzante, Federico, additional, Pedrinolla, Anna, additional, Martignon, Camilla, additional, Tarperi, Cantor, additional, Schena, Federico, additional, and Venturelli, Massimo, additional

Published
2021
Full Text
View/download PDF

9. Electrically induced quadriceps fatigue in the contralateral leg impairs ipsilateral knee extensors performance.

Author

Laginestra FG, Amann M, Kirmizi E, Giuriato G, Barbi C, Ruzzante F, Pedrinolla A, Martignon C, Tarperi C, Schena F, and Venturelli M

Subjects
Adult, Electromyography methods, Humans, Knee physiopathology, Knee Joint physiopathology, Male, Muscle, Skeletal physiopathology, Exercise physiology, Leg physiopathology, Muscle Contraction physiology, Muscle Fatigue physiology, Quadriceps Muscle physiopathology
Abstract

Muscle fatigue induced by voluntary exercise, which requires central motor drive, causes central fatigue that impairs endurance performance of a different, nonfatigued muscle. This study investigated the impact of quadriceps fatigue induced by electrically induced (no central motor drive) contractions on single-leg knee-extension (KE) performance of the subsequently exercising ipsilateral quadriceps. On two separate occasions, eight males completed constant-load (85% of maximal power-output) KE exercise to exhaustion. In a counterbalanced manner, subjects performed the KE exercise with no pre-existing quadriceps fatigue in the contralateral leg on one day (No-PreF), whereas on the other day, the same KE exercise was repeated following electrically induced quadriceps fatigue in the contralateral leg (PreF). Quadriceps fatigue was assessed by evaluating pre- to postexercise changes in potentiated twitch force (ΔQ tw,pot ; peripheral fatigue), and voluntary muscle activation (ΔVA; central fatigue). As reflected by the 57 ± 11% reduction in electrically evoked pulse force, the electrically induced fatigue protocol caused significant knee-extensors fatigue. KE endurance time to exhaustion was shorter during PreF compared with No-PreF (4.6 ± 1.2 vs 7.7 ± 2.4 min; P < 0.01). Although ΔQ tw,pot was significantly larger in No-PreF compared with PreF (-60% vs -52%, P < 0.05), ΔVA was greater in PreF (-14% vs -10%, P < 0.05). Taken together, electrically induced quadriceps fatigue in the contralateral leg limits KE endurance performance and the development of peripheral fatigue in the ipsilateral leg. These findings support the hypothesis that the crossover effect of central fatigue is mainly mediated by group III/IV muscle afferent feedback and suggest that impairments associated with central motor drive may only play a minor role in this phenomenon.

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results