王宁华，Hui-Chan WYC.穴位TENS对正常老年人热痛阈的累加抑制作用[J].中华物理医学与康复杂志,2003,(9):.-
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| 穴位TENS对正常老年人热痛阈的累加抑制作用 |
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| DOI： |
| 中文关键词: 经皮神经电刺激 累加作用 热痛阈 |
| 英文关键词: Transcutaneous electrical nerve stimulation Cumulative effect Heat pain threshold |
| 基金项目:香港理工大学重点学科基金（No.A103），香港理工大学博士基金（No. G-V437） |
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| 中文摘要: |
| 目的研究重复经皮神经电刺激（TENS）治疗能否对热痛阈产生累加抑制作用。 方法19名正常老年人受试者随机分为TENS组和空白对照组，其膝关节周围分别接受每日2次、每次60 min、共6次TENS或空白刺激。分别在2组刺激前、中、后以Medoc TSA-2001仪测定热痛阈。多项逐步回归分析法分析数据。 结果6次刺激后，TENS组显示热痛阈显著性增加，从46.9℃升至48.6℃，增长为1.7℃。 结论TENS对热痛阈具有累加抑制作用，并提示神经系统存在的可塑性变化。 |
| 英文摘要: |
| Objective To determine if TENS application for 60 min twice daily, over a short period of time(3-day), could have cumulative analgesic effects on another type of pain induced by heat. MethodsNineteen elder normal subjects, aged 60 to 85, were randomly allocated into a TENS and a placebo group. Sixty minutes of TENS (200ms in pulses at 100Hz with 2 ～ 3 times sensory threshold intensity) or placebo stimulation was applied to four acupoints around the knee joint twice daily over a 3-day period (=6 sessions in total). Heat pain threshold was measured using the Medoc TSA-2001 device before, during and after TENS or placebo stimulation to each subject. The results obtained were analyzed using repeated measures ANOVA. ResultsBy the end of 6 treatment sessions, there was a significant increase in the pre-stimulation heat pain threshold, from 46.9℃ in session 1 to 48.6℃ in session 6, or by 1.7℃ in the TENS group. ConclusionThe existence of such a cumulative antinociceptive effect, as denoted by a significant rise in the heat pain threshold before TENS in session 1 when compared with that in session 6, suggested possible plastic changes in the nervous system in the TENS group. |
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