Publication date: Available online 10 March 2017
Source:Gait & Posture
Author(s): Kyoung-Sim Jung, Tae-Sung In, Hwi-young Cho
Sit-to-stand is a fundamental movement of human being for performing mobility and independent activity. However, Stroke people symptoms experience difficulty in conducting the sit-to-stand due to paralysis and especially ankle spasticity. Recently, transcutaneouselectrical- stimulation (TENS) is used to reduce pain but also to manage spasticity. The purpose of this study was to determine (1) whether TENS would lead to ankle spasticity reduction and (2) whether sit-to-stand training combined with TENS would improve spasticity, muscle strength and balance ability in stroke patients. Forty-stroke patients were recruited and were randomly divided into two groups: TENS group (n=20) and sham group (n=20). All participants underwent 30-sessions of sit-to-stand training (for 15-minutes, five-times per week for 6-weeks). Prior to each training session, 30-minutes of TENS over the peroneal nerve was given in TENS group, whereas sham group received non-electrically stimulated TENS for the same amount of time. Composite-Spasticity-Score was used to assess spasticity level of ankle plantar-flexors. Isometric strength in the extensor of hip, knee and ankle were measured by handhelddynamometer. Postural-sway distance was measured using a force platform. The spasticity score in the TENS group (2.6±0.8) improved significantly greater than the sham group (0.7±0.8, p <0.05). The muscle strength of hip extensor in the TENS group (2.7±1.1kg) was significantly higher than the sham group (1.0±0.8kg, p <0.05). Significant improvement in postural-sway was observed in the TENS group compared to the sham group (p <0.05). Thus, sit-to-stand training combined with TENS may be used to improve the spasticity, balance function and muscle strength in stroke patients.
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