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The patellar reflex, also called the knee reflex or knee-jerk, is a stretch reflex which tests the L2, L3, and L4 segments of the spinal cord. Many animals, most significantly humans, have been seen to have the patellar reflex, including dogs, cats, horses, and other mammalian species.
The stretch reflex (myotatic reflex), or more accurately "muscle stretch reflex", is a muscle contraction in response to stretching a muscle. The function of the reflex is generally thought to be maintaining the muscle at a constant length but the response is often coordinated across multiple muscles and even joints. [ 1 ]
Sitting for excessive periods of time can be harmful to your health, so experts recommend being intentional about incorporating some movement every 30 minutes to every hour or so without stressing ...
Taking breaks from sitting every 30 to 60 minutes and moving throughout the day is recommended for everyone, including those who exercise regularly. Sitting still for more than an hour to 90 ...
The body varies the stiffness of its limbs by three primary mechanisms: muscle cocontraction, [1] [8] [9] posture selection, [6] and through stretch reflexes. [ 1 ] [ 10 ] [ 11 ] [ 12 ] Muscle cocontraction (similar to muscle tone ) is able to vary the stiffness of a joint by the action of antagonistic muscles acting on the joint.
Standing or sitting, drop your right ear toward your right shoulder and feel a stretch in the left side of the neck. Hold for 2-4 breaths, and then release and switch sides. Chin to chest stretch
[2] [4] If this is insufficient for treating vasovagal syncope, medications such as midodrine or fludrocortisone may be tried. [4] Occasionally, a cardiac pacemaker may be used as treatment. [2] Reflex syncope affects at least 1 in 1,000 people per year. [1] It is the most common type of syncope, making up more than 50% of all cases. [2]
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