ADHD can cause kids to act in different ways, depending on the kid who has it. Most kids with ADHD have problems concentrating and paying attention. Some also might have trouble sitting still in class and waiting for their turn. They might yell out the answers before other kids have a chance to raise their hands.
Isotonic Muscle Contractions. Muscle contractions which result in movement are known as isotonic contractions. There are two types of isotonic muscle contraction-Concentric and Eccentric. Concentric Contractions. Concentric muscle contractions are the most common form of contraction.
When only one side of a muscle contracts, it is termed a unilateral contraction. Unilateral contractions of these muscles result in frontal and transverse plane motions of the trunk. Muscles on the right side will cause right lateral flexion, and muscles on the left side will cause left lateral flexion.