0.5mm针径内热针密集针刺对家兔骨骼肌慢性损伤后肌张力的影响

Effects of dense acupuncture with 0.5mm diameter dry needle of inner heating on muscle tension after chronic skeletal muscle injury in rabbits

目的:探讨0.5mm针径的内热针两种不同针距的密集性针刺对家兔骨骼肌慢性损伤后肌张力的影响。方法:造模完成后,20只家兔随机分为1.0cm针距组,0.6cm针距组,损伤对照组。1.0cm针距组和0.6cm针距组共10只,家兔左腿密集针刺针距为0.6cm,右腿密集针刺针距为1.0cm。损伤对照组10只。针刺组分别于内热针针刺前和针刺后第2天、第7天、第14天测力—位移值(FDD值),测3次求其平均值,记录并统计分析。损伤对照组不做任何处理,FDD值测量方法及时间点同上。结果:组间各时间点FDD值比较:1针刺前:损伤对照组[(1.303±0.064)mm]、0.6cm针距组[(1.3368±0.045)mm]、1.0cm针距组[(1.346±0.065)mm]间FDD值比较无明显差异(P>0.05);2针刺后2天:损伤对照组[(1.348±0.029)mm]、0.6cm针距组[(2.349±0.135)mm]、1.0cm针距组[(1.834±0.097)mm]间FDD值比较,差异有显著性意义(P<0.01);3针刺后第7天损伤对照组[(1.346±0.039)mm]、0.6cm针距组[(3.123±0.132)mm]、1.0cm针距组[(2.172±0.068)mm]间FDD值比较,差异有显著性意义(P<0.01);4针刺后14天:损伤对照组[(1.344±0.059)mm]、0.6cm针距组[(4.120±0.219)mm]、1.0cm针距组[(2.278±0.148)mm]间FDD值比较,差异有显著性意义(P<0.01)。组内各时间点FDD值比较:损伤对照组组内各时间点FDD值比较,差异无显著性意义(P>0.05);0.6cm针距组、1.0cm针距组各组内针刺前与针刺后第2天、第7天、第14天FDD值比较,差异有显著性意义(P<0.01)。结论:当治疗针径为0.5mm,密集针刺距离为0.6cm时内热针治疗骨骼肌慢性损伤肌张力随时间的改变而降低,针刺后14天肌张力较针刺前明显降低。

Objective： To investigate the effects of dense acupuncture with 0.5mm diameter dry needles of inner heating with two stitch length on muscle tension after chronic skeletal muscle injury in rabbits. Method： After modelling chronic skeletal muscle injury on biceps flexor of left leg of rabbits, a total of 20 rabbits were randomized to 3 groups： 1.0crn stitch length on 10 rabbit right leg, 0.6cm stitch length on 10 rab- bits＇ left leg, the another 10 rabbits as model group. In both pinprick groups, muscle tension were measured three times before pinprick and after pinprick at the 2nd day, 7th day and 14th day to obtain the average, ral- ue of force-displacement distance （FDD）. In model control group, rabbits had no therapy but the measurement of FDD was the same as in pinprick groups. FDD value were compared among 3 groups at each time point.Result： （1）Before pinprick： FDD values among the model control group [（1.303±0.064）mm], 0.6cm stitch length [（1.3368±0.045）mm] and 1.0cm stitch length group [（1.346±0.065）mm] showed no significant difference （P〉 0.05）; （2）Two days after pinprick： FDD values among the model control group [（1.348±0.029）mm], 0.6cm stitch length group [（2.349±0.135）mm] and 1.0cm stitch length group [（1.834±0.097）mm] showed statistically signifi- cant difference （P〈 0.01）; （3）7 days after pinprick： FDD values among the model control group [（1,346±0.039） mm], 0.6cm stitch length group [（3.123±0.132）mm] and 1.0cm stitch length group [（2.172±0.068）mm] showed statistically significant difference （P〈0.01）; （4）14 days after pinprick： FDD values among the model control group [（1.344±0.059）mm], 0.6cm stitch length group [（4.120±0.219）mm] and 1.0cm stitch length group [（2.278± 0.148）mm] showed statistically significant difference （P〈0.01）. Comparison of FDD values in each group at each time point showed： there was no significant difference （P〉 0.05） in the model control group. Comparison of FDD values showed statistically significant difference among before pinprick and 2 days, 7 days, 14 days af- ter pinprick （P 〈 0.01）. Conclusion： Muscle tension decreased over time and was more significantly at the 14th day, when the needle diameter was 0.5mm and the needle distance was 0.6cm in therapy of dry needle of inner heating for chronic skeletal muscle injury.