Willy R W, Kyle B A, Moore S A, Chleboun G S
School of Physical Therapy, Ohio University, Athens, USA.
J Orthop Sports Phys Ther. 2001 Mar;31(3):138-44. doi: 10.2519/jospt.2001.31.3.138.
Single group repeated measures.
To determine the effects of cessation and resumption of a hamstring muscle stretching protocol on knee range of motion (ROM).
It is generally accepted that stretching exercises result in an increase in ROM. The ability to maintain ROM once stretching has ceased and the ability to regain ROM after resumption of the stretching exercise is not well-known.
Evaluated the effect of 6 weeks of static hamstring stretching, 4 weeks with cessation from stretching, and 6 weeks with resumption of stretching on knee ROM in 18 inactive college students (12 men, 6 women, mean age 21.0 years). The hamstring stretching consisted of 2 30-second stretches per day, 5 days per week. Knee ROM was measured before and after each of the above phases with an active knee extension test.
Mean knee ROM increased after the initial stretching period (143+/-11 to 152+/-9 degrees), decreased to baseline following the cessation period (145+/-8 degrees) and again increased following the resumption of stretching but was not different from the initial gains (154+/-10 degrees). Unlike the stretch limb, the control limb ROM did not change over the 4 measurement times.
There was no retention of knee ROM 4 weeks following a 6-week stretching protocol and a subsequent stretching period did not enhance the gain of knee ROM over the initial stretching period.
单组重复测量。
确定腘绳肌拉伸方案的停止和恢复对膝关节活动范围（ROM）的影响。
人们普遍认为拉伸运动可增加关节活动范围。然而，拉伸停止后维持关节活动范围的能力以及恢复拉伸运动后恢复关节活动范围的能力尚不清楚。
评估了18名不活跃大学生（12名男性，6名女性，平均年龄21.0岁）进行6周静态腘绳肌拉伸、4周停止拉伸以及6周恢复拉伸对膝关节活动范围的影响。腘绳肌拉伸包括每天2次30秒的拉伸，每周5天。在上述每个阶段前后，通过主动膝关节伸展试验测量膝关节活动范围。
在初始拉伸期后，平均膝关节活动范围增加（从143±11度增加到152±9度），在停止期后降至基线水平（145±8度），恢复拉伸后再次增加，但与初始增加幅度无差异（154±10度）。与拉伸侧肢体不同，对照侧肢体的关节活动范围在4次测量期间没有变化。
在进行6周拉伸方案后4周，膝关节活动范围没有保持，随后的拉伸期也没有比初始拉伸期增加更多的膝关节活动范围。
