Of all the muscle groups of the body, the hamstrings are some of the most chronically shortened. Because of man’s current predisposition to prolonged sitting, the hamstring or bicep femoris is stuck in a contracted or shortened state for hours daily. This prolonged sitting caused the hamstring to assimilate into a shortened position.
Addressing chronically shortened hamstrings is not a new concept. The runner’s stretch is an age old-static stretch and position commonly utilized for addressing hamstring length. While static stretching has its benefit, research shows that active stretching has similar benefits and none of the negatives associated with loss of power outputs.
Take a look as Dr. Jon outlines a basic active doorway routine for attacking those chronically shortened hamstrings.