Extending the knee joint (often called a straight leg raise]) increases the demands of leverage on both hip and spine flexors. It also reduces the contribution of the rectus femoris muscle via over-active insufficiency, creating more work for the non-quadriceps hip flexors.
Other articles related to "joints, joint":
... reduces this number by the constraints that are imposed by joints connecting these bodies ... Joints that connect bodies in this system remove degrees of freedom and reduce mobility ... It is convenient to define the number of constraints c that a joint imposes in terms of the joint's freedom f, where c=6-f ...
... claim that the body will pay for its sins according to each of its 365 joints ... and a fast every month," which "is in proportion to the number of joints and sinews in the human body" (410) ... awaiting the damned body will be proportional to its 365 joints ...
... In 2% to 5% of young children with smallpox, virions reach the joints and bone, causing osteomyelitis variolosa ... Swollen joints limit movement, and arthritis may lead to limb deformities, ankylosis, malformed bones, flail joints, and stubby fingers ...
... (EDS), where hyper-extensive and usually unstable joints (e.g ... joints that are problematically much more flexible, frequently to the point of subluxation and even dislocation) are quite common throughout the body ... (if not the norm) to find the muscles surrounding the joints to be a major source of compensation when such instability exists ...
Famous quotes containing the word joints:
“Opinions are to the vast apparatus of social existence what oil is to machines: one does not go up to a turbine and pour machine oil over it; one applies a little to hidden spindles and joints that one has to know.”
—Walter Benjamin (18921940)
“To round that shells elaborate whorl,
Adorning every secret track
With the delicate mother-of-pearl,
Made the joints of Heaven crack....”
—William Butler Yeats (18651939)
“Farmers in overalls and wide-brimmed straw hats lounge about the store on hot summer days, when the most common sound is the thump-thump-thump of a hounds leg on the floor as he scratches contentedly. Oldtime hunters say that fleas are a hounds salvation: his constant twisting and clawing in pursuit of the tormentors keeps his joints supple.”
—Administration in the State of Arka, U.S. public relief program (1935-1943)