Doublet Stimulation to Reduce Fatigue in Electrically Stimulated Muscle During Controlled Leg Lifts

G. R. Routh, W. K. Durfee

Research output: Contribution to journalConference article

9 Scopus citations


Stimulation trains using doublets, two closely spaced stimulation pulses, are thought to reduce the rapid fatigue seen in electrically stimulated muscle. The purpose of this study was to determine if doublet trains could elicit more leg lifts than conventional singlet trains when using surface stimulation of human quadriceps muscle. Eighteen subjects had singlet and doublet stimulation trains applied to their quadriceps to produce closed-loop, leg lift trajectory cycles. Trials ran until the muscle fatigued. Data was collected from 23 legs. The mean ± standard deviation of the number of cycles resulting from singlets was 160 ± 105 while the number for doublets was 127 ± 114. A paired t-test showed this difference to be significant. It is thought that the conflicting reports of doublet performance seen in the literature is due to the different protocols used by each study.

Original languageEnglish (US)
Pages (from-to)1531-1534
Number of pages4
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
StatePublished - Dec 1 2003
EventA New Beginning for Human Health: Proceddings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico
Duration: Sep 17 2003Sep 21 2003


  • Functional electrical stimulation
  • Muscle fatigue
  • Spinal cord injury

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