Abstract
[Purpose] This study aimed to explore the effects of electrical stimulation (ES) of abdominal muscles on voluntary cough intensity and trunk function in stroke patients. [Methods] A total of 23 stroke inpatients undergoing rehabilitation were included. Patients were divided into an ES group of 10 patients, which concomitantly received electrical stimulation for 4 weeks, and a control group of 13 patients. Respiratory muscle strength was assessed using maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP). Voluntary cough intensity was assessed by measuring peak cough flow (PCF) and sound pressure level (SPL). Trunk function was assessed using the trunk control test (TCT) and the time required to rise from a supine to a seated position. [Results] In the ES group, MEP, MIP, PCF and SPL at 4 weeks were significantly increased from the baseline. In the control group, no significant difference was found in any parameter. The TCT score significantly increased in both groups, but no significant difference was noted in the ratio of change between the groups. The mean percent decrease in the time required to rise from a supine to a seated position was 18.4% in the ES group and 8.7% in the control group, suggesting that ES of the abdominal muscles may improve trunk function. [Conclusion] These results suggest that, ES of the abdominal muscles of stroke patients might increase voluntary cough intensity and improve trunk function.
