Effect of manual acupuncture and transcutaneous electrical nerve stimulation on the H-reflex

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题名:	Effect of manual acupuncture and transcutaneous electrical nerve stimulation on the H-reflex
作者:	Chang, QY;Lin, JG;Hsieh, CL
贡献者:	附設醫院中醫部;China Med Coll Hosp, Chinese Med Dept, Taichung, Taiwan;China Med Coll, Inst Chinese Med Sci, Taichung, Taiwan
关键词:	Manual acupuncture;Transcutaneious electrical nerve stimulation;H-reflex;2Hz;100Hz
日期:	2001
上传时间:	2010-09-24 14:17:47 (UTC+8)
出版者:	COGNIZANT COMMUNICATION CORP
摘要:	Background: A cross-sectional study was conducted in May 1998 in Chung-Hsing Village, Taiwan to evaluate the relationship between body mass index (BMI) and its related factors in the elderly. Methods: Individuals aged 65 years and over were recruited as study subjects. A total of 1093 persons, out of 1774 registered residents, were contacted for face-to face interview (61.6%). However, only 586 respondents completed the questionnaire and had blood tests. Analysis was based on these 586 subjects. Results: There were 66.0% men and 34.0% women. The mean age was 73.1 +/- 5.3 years. The BMI was 24.13 +/- 4.64 kg/m(2) and 24.07 +/- 3.99 kg/m(2) for men and women, respectively (P > 0.05). In univariate analysis, high systolic pressure, high. diastolic pressure, hypertriglyceridaemia, hyperglycaemia and hyperuricaemia were related to obesity. After controlling for the other covariates, the multivariate logistic regression analysis showed that significant related factors of obesity were hyperglycaemia and hyperuricaemia. Conclusions: Significant related factors of obesity in the elderly were hyperglycaemia and hyperuricaemia. A large-scale investigation will be suggested in the future to address causal-effect issues between obesity and hyperglycaemia or hyperuricaemia. Several studies find that manual acupuncture and transcutancous electrical nerve stimulation (TENS) are via different mechanisms and generate different effect on the central nervous system, therefore, the aim of the present study was to compare the effect of manual acupuncture (MA) and TENS on the spinal cord using H-reflex recordings. A total of 13 healthy adult volunteers were studied. The electrical stimuli were delivered to the posterior tibia] nerve transcutaneously at the left popliteal fossa to evoke the soleus H-reflex. MA, 2Hz TENS, 100HZ TENS, respectively, was applied to the surface of the right first dorsal interosseous muscle exactly at the Hegu acupoint (LI.4). Four assessments were performed randomly, separated by an interval of at least three days in all the subjects as follows: 1) Control assessment: a pair of electrodes placed on the surface of the right Hegu acupoint (LI.4), but no electrical stimulation was delivered throughout the test; 2) MA assessment: MA was done at the right Hegu acupoint (LI.4) for 15 minutes; 3) TENS assessment at 2Hz: electrical stimulation (40 mA in intensity) at 2Hz was applied to the surface of the right Hegu acupoint (LI.4) for 15 minutes; 4) TENS assessment at 100HZ: electrical stimulation (20 mA in intensity) at 100 Hz was applied to the surface of the right Hegu acupoint (LI.4) for 15 minutes. Each assessment was divided into three periods as follows: 1) Baseline period: H-reflexes recorded prior to MA or TENS; 2) TENS period: six H-reflex recordings after MA or TENS for a duration of 4-5 min, 9-10 min and 14-15 min, respectively; 3) Post TENS period: H-reflex recordings of 6 after TENS period 4-5 min and 9-10 min, respectively. Our results indicate that both 2Hz TENS and 100HZ TENS increased the amplitude of the H-reflex, and that these increases may be retained longer with 100 Hz TENS than with 2 Hz TENS, whereas MA could not increase the amplitude of the H-reflex. MA, TENS at 2 Hz or 100 Hz didn't change the latencies of the H-reflexes. We conclude that both 2Hz and 100Hz TENS increased the amplitude of the H-reflex, suggesting that TENS enhances the excitability of the motoneuron pool in the spinal cord, and 100 Hz TENS has a greater effect than 2 Hz TENS, whereas MA was not similar effect to TENS on spinal cord.
關聯:	ACUPUNCTURE & ELECTRO-THERAPEUTICS RESEARCH 26(4):239-251
显示于类别:	[台中附設醫院] 期刊論文

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