不同電流型式之舒適度比較

Comfort of Various Currents in Eliciting Isotonic Contractions of Quadriceps Femoris Muscle

蔡美文(Mei-Wun Tsai)

《中華民國物理治療學會雜誌》 18卷2期 (1993/09) Pp. 121-128

https://doi.org/10.29616/JPTAROC.199309.0001

摘要

本研究目的在比較不同型式電流之舒適度。選用四種電流型式：連續性和間歇性的低頻雙相波，間歇性的中頻蘇聯波及連續性的中頻幹擾波，他們均具有相同的40微米波寬和50赫茲波頻，將這四種電流以隨意排列分別刺激40位健康受試者的股四頭肌，當電流強度足以引起膝關節由彎曲30度舉起1公斤沙袋至0度時，要求受試者在10公分長的比例刻度線(visual analog scale)上分別劃上四種電流的舒適度。結果顯示間歇性的刺激均較連續性刺激的舒適度為佳，但是中頻電流與低頻電流間的舒適度在相同的波寬下沒有明顯的差異，此外女性對電流的舒適度較男性為差，而受試者間對不同電流的優先排列仍有許多變異性，是在臨床應用上必須列入考慮的個別差異性。

關鍵字

舒適度 ； 電刺激

並列摘要

The purpose of this study was to compare the relative comfort levels of different electrical currents used in eliciting isotonic contractions of quadriceps femoris muscle. The quadriceps femoris muscles of 40 healthy subjects were stimulated by the intensity that was strong enough to extend the subject's knee from 30 to O degrees of flexion against one-kilogram weight. Four' different currents, with identical stimulating pulse rate and pulse duration, were used: continuous and intermittent biphasic currents, Russian current and interferential current. The relative comfort level of electrically elicited contraction for each current was determined for each subject using a 10-cm-long visual analog scale. The results showed that a subject's perception of intermittent stimulation, either biphasic current or Russian current, was more comfortable than that of continuous stimulation. No whether middle or low frequency of currents, subjective comfort levels were similar in the condition of the same short pulse duration.

並列關鍵字

Comfort ； Electrical stimulation