Low-frequency electrical stimulation increases muscle strength and improves blood supply in patients with chronic heart failure

Petr Dobšák, Marie Nováková, Jarmila Siegelová, Bohumil Fišer, Jiří Vítovec, Makoto Nagasaka, Masahiro Kohzuki, Tomoyuki Yambe, Shin Ichi Nitta, Jean Christophe Eicher, Jean Eric Wolf, Kou Imachi

Research output: Contribution to journalArticlepeer-review

60 Citations (Scopus)

Abstract

Background: This study was designed to evaluate the effects of low-frequency electrical stimulation (LFES) on muscle strength and blood flow in patients with advanced chronic heart failure (CHF). Methods and Results: Patients with CHF (n=15; age 56.5±5.2 years; New York Heart Association III-IV; ejection fraction 18.7±3.3%) were examined before and after 6 weeks of LFES (10 Hz) of the quadriceps and calf muscles of both legs (1 h/day, 7 days/week). Dynamometry was performed weekly to determine maximal muscle strength (Fmax; N) and isokinetic peak torque (PTmax; Nm); blood flow velocity (BFV) was measured at baseline and after 6 weeks of LFES using pulsed-wave Doppler velocimetry of the right femoral artery. Six weeks of LFES significantly increased Fmax (from 224.5±96.8 N to 340.0±99.4 N; p<0.001), and also PTmax (from 94.5± 41.5 Nm to 135.3±28.8 Nm; p<0.01). BFV in the femoral artery increased after 6 weeks from 35.7±15.4 cm/s to 48.2±18.1 cm/s (p<0.05); BFV values at rest before and after 6 weeks of LFES did not differ significantly. Conclusions: LFES may improve muscle strength and blood supply, and could be recommended for the treatment of patients with severe CHF.

Original languageEnglish
Pages (from-to)75-82
Number of pages8
JournalCirculation Journal
Volume70
Issue number1
DOIs
Publication statusPublished - 2006

Keywords

  • Blood flow
  • Heart failure
  • Muscle
  • Stimulation

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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