Analgesic effects induced by TENS and electroacupuncture with different types of stimulating electrodes on deep tissues in human subjects

老師 :蔡育秀報告者 :梁家瑜

摘要 TENS : 1. Cone-shaped metal

2. Rubber

3. Large soft surface electrodes EA : 1. insulated

2.non-insulated

Introduction

Pain thresholds in deep tissues : used hypertonic saline injection as pain

stimulus. muscle pain measurement is pressure

algometry

Methods(1) Subjects :16 healthy male subjects , aged 24 Stimulating electrodes : TENS : 1. Cone-shaped metal 2. Rubber 3. Large s

oft surface electrodes EA : 1. insulated 2.non-insulated TENS and EA : TENS : Two pairs (4 electrodes) the skin of the righ

t anterior femoral region EA : depth of about 30 mm as Teh-chi

Methods(2) Deep pain measurement : Skin :The needle was inserted about 3 mm Fascia : Muscle twitching was rarely evoked until the stim

ulus current reached pain threshold. Muscle : After penetration of the hard membrane, the phys

ical resistance to needle penetration suddenly disappeared. Muscle twitching was observed frequently at low stimulus intensity.

Periosteum : The needle penetrated until it touched hard bone. Muscular twitching was rarely observed during electrical stimulation.

Results Pain thresholds in

deep tissues : periosteum < fascia

< skin< muscle

Discussion

本研究目的是找到合適的電極在深組織鎮痛作用，尤其是在肌肉和骨膜

高強度和高頻率 EA(非絕緣針電極 ) 比TENS(不同類型電極 )產生更加有力的鎮痛作用於皮膚和筋膜。

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