Correlation between physical activity, respiratory muscle strength and heart rate indexes in spinal cord injured wheel chair users
Keywords:
spinal cord injury, heart rate indexes, maximum inspiratory pressure, maximum expiratory pressure, physical activityAbstract
Objective: To find out the correlation between physical activity, respiratory muscle strength, heart rate indexes and heart rate variability in spinal cord injured manual wheelchair users. Also compare the physical activity, respiratory muscle strength, heart rate indexes and heart rate variability of spinal cord injured manual wheelchair users with the normal healthy controls. Patients and Methods: A convenient sample that included 50 SCI and 50 normal healthy controls with age 22-35 years was recruited. Individuals with chronic traumatic SCI of C6 to T12 (AIS A or B)4 and are trained with basic wheelchair skills4 . While those on medication, having any comorbidity other than SCI and current smokers were excluded. The SCI propelled their wheelchair for 5 mins at a self-selected and comfortable pace around a 41m circular track. Static mouth pressures and physical activity was recorded. Healthy individuals performed the 6-minute walk test. Results: A significant correlation between the respiratory muscle strength, heart rate indexes and heart rate variability was seen. PCCI was the most correlated followed by THBI and PCI did not showed any correlation.
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