Acute passive stretching in a previously fatigued muscle: Electrical and mechanical response during tetanic stimulation

Fabio Esposito, Emiliano Cè, Susanna Rampichini, Arsenio Veicsteinas

Research output: Contribution to journalArticlepeer-review

Abstract

The aim of this study was to assess the effects of acute passive stretching on the electrical and mechanical response of a previously fatigued muscle. Eleven participants underwent maximal tetanic stimulations (50 Hz) of the medial gastrocnemius, before and after a fatiguing protocol and after a bout of passive stretching of the fatigued muscle. During contraction, surface electromyography (EMG), mechanomyography (MMG), and force were recorded. The following parameters were calculated: (1) the EMG root mean square (RMS), mean frequency, and fibre conduction velocity; (2) MMGpeak-to-peak and RMS; (3) the peak force, contraction time, half-relaxation time, peak rate of force development (dF/ dt) and its acceleration (d2F/dt2). Fatigue reduced peak force by 18% (P

Original languageEnglish
Pages (from-to)1347-1357
Number of pages11
JournalJournal of Sports Sciences
Volume27
Issue number12
DOIs
Publication statusPublished - Oct 2009

Keywords

  • Electrical stimulation
  • Electromyography
  • Mechanomyography
  • Muscle stiffness

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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