A comparison of passive hindlimb cycling and active upper-limb exercise provides new insights into systolic dysfunction after spinal cord injury
In conclusion, PHLC improves flow-derived cardiac indexes, whereas SWIM training displayed no cardiobeneficial effect. Pressure-derived deficits were corrected only with dobutamine, suggesting that reduced β-adrenergic stimulation is principally responsible for the impaired cardiac contractile function after SCI.
NEW & NOTEWORTHY This is the first direct comparison between the cardiac changes elicited by active upper-limb or passive lower-limb exercise after spinal cord injury. Here, we demonstrate that lower-limb exercise positively influences flow-derived cardiac indexes, whereas upper-limb exercise does not. Furthermore, neither intervention corrects the cardiac contractile dysfunction associated with spinal cord injury.
Source: AJP: Heart and Circulatory Physiology - Category: Cardiology Authors: DeVeau, K. M., Harman, K. A., Squair, J. W., Krassioukov, A. V., Magnuson, D. S. K., West, C. R. Tags: RESEARCH ARTICLE Source Type: research
More News: Cardiology | Heart | Physiology | Spinal Cord Injury | Sports Medicine | Stroke | Study | Training | Universities & Medical Training