Lower fatigability of locomotor than non-locomotor muscles in endurance runners

Gennaro Boccia, Davide Dardanello, Cantor Tarperi, Luca Festa, Antonio la Torre, Federico Schena, Alberto Rainoldi

Research output: Contribution to journalArticle

Abstract

Knee extensor and elbow flexor muscles have been demonstrated to have similar fatigability, i.e. time to task failure at submaximal force level, in healthy non-trained individuals. This experiment investigated if continuative endurance training can influence the fatigability of these two muscle groups in amateur runners. Surface electromyography was used to assess fatigability in twelve amateur runners. Participants were requested to sustain for 30 s the 70 % of their maximum voluntary contraction of knee extensor and elbow flexor muscles. During contractions, electromyographic signals were recorded, respectively, from vastus lateralis and biceps brachii muscles with linear array of eight electrodes. Muscle fiber conduction velocity (CV), mean power spectral frequency (MNF), and fractal dimension (FD) of electromyographic signals were calculated. During the sustained contraction vastus lateralis muscle showed smaller decrease of CV (p = 0.006), MNF (p = 0.001), and FD (p = 0.001) than biceps brachii muscle. The lower fatigability found in knee extensors than in elbow flexors suggests that the physiological adaptation promoted by the endurance training was specific to the musculature involved in the training (i.e. the lower limbs).

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalSport Sciences for Health
DOIs
Publication statusAccepted/In press - Jul 8 2016

Fingerprint

Muscles
Elbow
Knee
Fractals
Quadriceps Muscle
Physiological Adaptation
Electromyography
Lower Extremity
Electrodes

Keywords

  • Biceps brachii
  • Electromyography
  • Fatigue
  • Fractal dimension
  • Muscle fiber conduction velocity
  • Vastus lateralis

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Boccia, G., Dardanello, D., Tarperi, C., Festa, L., la Torre, A., Schena, F., & Rainoldi, A. (Accepted/In press). Lower fatigability of locomotor than non-locomotor muscles in endurance runners. Sport Sciences for Health, 1-7. https://doi.org/10.1007/s11332-016-0297-6

Lower fatigability of locomotor than non-locomotor muscles in endurance runners. / Boccia, Gennaro; Dardanello, Davide; Tarperi, Cantor; Festa, Luca; la Torre, Antonio; Schena, Federico; Rainoldi, Alberto.

In: Sport Sciences for Health, 08.07.2016, p. 1-7.

Research output: Contribution to journalArticle

Boccia, Gennaro ; Dardanello, Davide ; Tarperi, Cantor ; Festa, Luca ; la Torre, Antonio ; Schena, Federico ; Rainoldi, Alberto. / Lower fatigability of locomotor than non-locomotor muscles in endurance runners. In: Sport Sciences for Health. 2016 ; pp. 1-7.
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