Post contraction hyperemia after electrical stimulation comparison with able-bodied persons and persons with upper extremity paralysis

Abstract

Purpose: The purpose of this study was to compare post contraction hyperemia after electrical stimulation with persons with upper extremity paralysis caused by upper motor neuron disease with able-bodied persons. Methods: Thirteen able-bodied persons and eleven individuals who had upper extremity paralysis caused by upper neuron disease were enrolled in the study. The blood flow of basilic vein was measured by ultra sound system before the electrical stimulation and 30 seconds after the stimulation. Electrical stimulation was done to the biceps brachii muscle. The strength was 10mA, frequency was 70Hz, stimulation time was 20 seconds. The Dynamid electro stimulation system was used for the electro stimulation and the TOSHIBA Xario ultrasound system was used for evaluating the blood flow. Results: The mean blood flow of the able-bodied group and paralysis group before the electrical stimulation was 60 ± 20 ml/min (Mean ± SD) and 48 ± 25ml/min. After the electrical stimulation, both increased to 117 ± 23 ml/min and 81 ± 41 ml/min. Conclusion: It was possible to measure the post contraction hyperemia by ultra sound system. Both blood flow of able-bodied persons and persons with upper extremity paralysis increased after the electrical stimulation due to post contraction hyperemia.