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This article and any supplementary material should be cited as follows: Gorgey AS, Poarch HJ, Dolbow DR, Castillo T, Gater DR. Effect of adjusting pulse durations of functional electrical stimulation cycling on energy expenditure and fatigue after spinal cord injury. J Rehabil Res Dev. 2014;51(9):1455–68. http://dx.doi.org/10.1682/JRRD.2014.02.0054 Slideshow Project DOI:10.1682/JRRD.2014.02.0054JSP Effect of adjusting pulse durations of functional electrical stimulation cycling on energy expenditure and fatigue after spinal cord injury Ashraf S. Gorgey, MPT, PhD, FACSM; Hunter J. Poarch, BS; David R. Dolbow, DPT, PhD; Teodoro Castillo, MD; David R. Gater, MD, PhD
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This article and any supplementary material should be cited as follows: Gorgey AS, Poarch HJ, Dolbow DR, Castillo T, Gater DR. Effect of adjusting pulse durations of functional electrical stimulation cycling on energy expenditure and fatigue after spinal cord injury. J Rehabil Res Dev. 2014;51(9):1455–68. http://dx.doi.org/10.1682/JRRD.2014.02.0054 Slideshow Project DOI:10.1682/JRRD.2014.02.0054JSP Aim – Determine effects of different pulse durations on oxygen uptake (VO 2 ), cycling performance, and energy expenditure (EE) of knee extensor muscles after cycling in persons with spinal cord injury (SCI). Relevance – Will provide clinical basis for adjusting and manipulating functional electrical stimulation (FES) parameters to enhance performance and EE and minimize fatigue.
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This article and any supplementary material should be cited as follows: Gorgey AS, Poarch HJ, Dolbow DR, Castillo T, Gater DR. Effect of adjusting pulse durations of functional electrical stimulation cycling on energy expenditure and fatigue after spinal cord injury. J Rehabil Res Dev. 2014;51(9):1455–68. http://dx.doi.org/10.1682/JRRD.2014.02.0054 Slideshow Project DOI:10.1682/JRRD.2014.02.0054JSP Method Repeated-measures design using FES cycle ergometer over 3 wk. Convenience sample: – 10 individuals with motor complete SCI. 3 different pulse durations: – 200, 350, and 500 s (P200, P350, and P500, respectively). – Measured immediately and 48–72 h after cycling.
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This article and any supplementary material should be cited as follows: Gorgey AS, Poarch HJ, Dolbow DR, Castillo T, Gater DR. Effect of adjusting pulse durations of functional electrical stimulation cycling on energy expenditure and fatigue after spinal cord injury. J Rehabil Res Dev. 2014;51(9):1455–68. http://dx.doi.org/10.1682/JRRD.2014.02.0054 Slideshow Project DOI:10.1682/JRRD.2014.02.0054JSP Results Relative VO 2 or cycling EE: – No difference among 3 FES protocols. Delta EE between exercise and rest: – 42% greater in P500 and P350 compared with P200. Muscle fatigue: – No difference among the three FES protocols. Knee extensor torque: – Significant decreases immediately after and 48–72 h after FES leg cycling.
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This article and any supplementary material should be cited as follows: Gorgey AS, Poarch HJ, Dolbow DR, Castillo T, Gater DR. Effect of adjusting pulse durations of functional electrical stimulation cycling on energy expenditure and fatigue after spinal cord injury. J Rehabil Res Dev. 2014;51(9):1455–68. http://dx.doi.org/10.1682/JRRD.2014.02.0054 Slideshow Project DOI:10.1682/JRRD.2014.02.0054JSP Conclusion Lengthening pulse duration did not affect submaximal or relative VO 2 or EE, total EE, and time to fatigue. Greater recovery VO 2 and delta EE were noted in P350 and P500 compared with P200. Acute bout of FES leg cycling resulted in torque reduction that did not fully recover 48–72 h after cycle.
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