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Heart rate and oxygen demand of powered exoskeleton-assisted walking in persons with paraplegia

Heart rate and oxygen demand of powered exoskeleton-assisted walking in persons with paraplegia. Pierre Asselin, MS; Steven Knezevic, MS; Stephen Kornfeld, DO; Christopher Cirnigliaro, MS; Irina Agranova-Breyter, PT; William A. Bauman, MD; Ann M. Spungen, EdD. Aim

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Heart rate and oxygen demand of powered exoskeleton-assisted walking in persons with paraplegia

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  1. Heart rate and oxygen demand of powered exoskeleton-assisted walkingin persons with paraplegia Pierre Asselin, MS; Steven Knezevic, MS; Stephen Kornfeld, DO; Christopher Cirnigliaro, MS; Irina Agranova-Breyter, PT; William A. Bauman, MD; Ann M. Spungen, EdD

  2. Aim • Investigate energy expenditure and heart rate (HR) during powered exoskeletal-assisted use during sitting, standing, and walking. • Relevance • Recent technological advances have led to development of powered exoskeletal devices that enable gait in persons with paralysis. • However, energy expenditure required to use powered exoskeleton has not been reported.

  3. Method • 8 nonambulatory persons with paraplegia were trained to ambulate with powered exoskeleton. • Measurements of oxygen uptake (VO2) and HR were recorded for 6 min each during each maneuver while sitting, standing, and walking.

  4. Results • HR and VO2 responses to exoskeletal-assisted walking in persons with motor-complete paraplegia were mildly increased from sitting and standing but well below maximal predicted value for both variables.

  5. Conclusion • Persons with paraplegia were able to ambulate efficiently using powered exoskeleton for overground ambulation, providing potential for functional gain and improved fitness.

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