Areeudomwong Pattanasin, Oatyimprai Ketsarakon, Pathumb Saranchana
Department of Physical Therapy, School of Health Science, Mae Fah Luang University, Chiang Rai, Thailand 57100; Research Center of Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University, Khon Kaen, Thailand 40002.
Department of Physical Therapy, School of Health Science, Mae Fah Luang University, Chiang Rai, Thailand 57100.
Malays J Med Sci. 2016 Nov;23(6):60-69. doi: 10.21315/mjms2016.23.6.7. Epub 2016 Dec 7.
Neurodynamics intervention is known to increase apparent muscle extensibility, but information regarding hamstring responses after a neurodynamic sliders (NS) technique is scarce. The aim of this study was to evaluate the effects of NS on apparent hamstring extensibility and activity in footballers with hamstring tightness.
Forty eligible healthy male footballers with hamstring tightness were each randomly allocated to either a 4-week NS technique or a control group (CG) receiving placebo shortwave intervention. Knee extension angles were measured with the passive knee extension test, and maximal voluntary isometric contraction (MVIC) of hamstrings was measured by a surface electromyography at baseline and after intervention sessions.
The results showed that NS produced a statistically and clinically significant increase in knee extension angle compared to CG ( < 0.001); however, there was no difference between the groups receiving MVIC of hamstrings. Within group comparison, NS also provided a significant increase in knee extension angle ( < 0.001), whereas the control group did not. There was no change in hamstring MVIC in either group after intervention.
The findings of this study reveal that four weeks of NS technique improved apparent hamstring extensibility but did not change the hamstring activity in footballers with hamstring tightness.
神经动力学干预已知可增加肌肉的表观伸展性，但关于神经动力学滑动（NS）技术后腘绳肌反应的信息却很少。本研究的目的是评估NS对腘绳肌紧绷的足球运动员的表观腘绳肌伸展性和活动的影响。
40名符合条件的健康男性腘绳肌紧绷足球运动员被随机分配到接受为期4周的NS技术组或接受安慰剂短波干预的对照组（CG）。在基线和干预后，通过被动膝关节伸展试验测量膝关节伸展角度，并通过表面肌电图测量腘绳肌的最大自主等长收缩（MVIC）。
结果显示，与CG相比，NS使膝关节伸展角度在统计学和临床上均有显著增加（<0.001）；然而，接受腘绳肌MVIC测量的两组之间没有差异。组内比较显示，NS也使膝关节伸展角度显著增加（<0.001），而对照组则没有。干预后两组的腘绳肌MVIC均无变化。
本研究结果表明，4周的NS技术改善了腘绳肌紧绷的足球运动员的表观腘绳肌伸展性，但并未改变其腘绳肌活动。
