Eccentric Definition Medical

It was a gospel so eccentrically bound to the accepted plan of things that only he could accept it in its entirety. Taber`s Cyclopedic Medical Dictionary 24th Edition Online + App by F.A. Davis and Unbound Medicine. Find 75,000 medical and nursing definitions. Download on iPhone, iPad and Android. Complete product information. Eccentric 1. Deviation or difference in the center or line of a circle; like, an eccentric or elliptical orbit; with respect to the deviation from the center or the actual circular motion. 2.

Not having the same centre; circles, ellipses, spheres, etc., which, although they correspond in whole or in part in terms of area or volume, do not have the same center; as opposed to concentric. 3. (Science: Machine) Related to an eccentric; like the eccentric rod in a steam engine. 4. Not by chance in terms of reason or end. His own goals, which must necessarily often be eccentric to those of his master. (Bacon) 5. Notwithstanding the methods, common practices or established forms or laws indicated; deviate from a particular sphere or path; departure from the usual course; irregular; anomalous; strange; like, eccentric behavior. This brave and eccentric young man.

It shines eccentrically, like the flame of a comet. Eccentric (wild) anomaly. (Science: Astronomy) The whole device, the belt and the other parts through which the movement of an eccentric is transmitted, as in the steam engine. Set of gears for rotating around an eccentric axis used to create a variable rotation. Eccentric hook or gab, a hook-shaped newspaper box at the end of an eccentric rod, in front of the strap. Eccentric rod, the rod that is connected like an eccentric strip to each part on which the eccentric must act. Eccentric pulley or eccentric pulley, an eccentric pulley. Eccentric band, the ring that acts as a newspaper box that surrounds and receives the movement of an eccentric; also called eccentric tires. Synonym: irregular, abnormal, singular, strange, strange, unpredictable, idiosyncratic, strange, bizarre. Origin: f. Eccentricity, once also written eccentrically, fr. LL.

Eccentros of the middle, eccentric, gr.; out of – Center. See Ex-, and Center, and cf. Eccentric. 1. A circle that does not have the same center as another is contained to some extent in the first. 2. Either that deviates from regularity; an abnormal or irregular person or thing. 3.

(Science: Astronomy) in the Ptolemaic system, the alleged circular orbit of a planet around the Earth, but with the Earth not at its center. A circle described via the center of an elliptical orbit, with half of the main axis for the radius. 4. (Science: Machine) a disc or wheel arranged on a shaft in such a way that the centre of the wheel and that of the shaft do not coincide. It is used for the operation of valves in steam engines and for other purposes. The derived movement is exactly that of a crank with the same throw. Eccentric rear, the eccentric that reverses or resets the valve gears and the engine. Eccentric front, the eccentric that gives the valve gear and engine forward movement. This inclusion takes into account the use and possible misuse of the terms „concentric and eccentric” in three possible contexts: first, the origin of the terms; second, different approaches; and thirdly, possible uses.

To our knowledge, twenty-six sections [i.e. (Barstow et al., 2002)] published in the Journal of Sports Science and Medicine, in which the term „concentric/eccentric exercise” was misused, while nine papers [i.e., (Coombs and Garbutt, 2002)] used the terms correctly. The purpose of this letter is to promote the use of „positive/negative work” terminology as well as „concentric/eccentric contraction” to facilitate reference finding (i.e., by keywords) and understanding. From this quirky campground, cross the river to Wapsipinicon State Park or rent a canoe or kayak at Lou Lou`s Landing, about 15 miles southeast, to swim on the Wapsipinicon River. We`ve found headphones that are suitable for both minimalists and eccentrics – none of which skimp on sound quality and comfort. Councillor Donna Frye – dismissed in a national newspaper headline as a „surfer-mayor-mayor-aspiring mayor” – stood out as an eccentric but powerful advocate for challenging the status quo. The correct use of the terms „eccentric and concentric” can be useful in understanding the results of a review article and deciding whether the authors` conclusions are justified by the data. To avoid confusion, words such as positive (concentric) or negative (eccentric) exercise are preferred. They stress the importance of the outcome and therefore what was probably expected. We believe that sport science still represents some confusion for other concepts, and we invite all our colleagues to discuss this in letters to the editor, as we did in this short letter. Each contains a single round or oval core, which is often eccentric. David Bradley, the eccentric minority owner and longtime chairman, has been looking for a new CEO for a year after promising to step down from management.

Rod: Often placed eccentrically in the cap; proportionally thick and short. „Eccentric hypertrophy Merriam-Webster.com Medical Dictionary, Merriam-Webster, www.merriam-webster.com/medical/eccentric%20hypertrophy. Retrieved 14 October 2022. I shouldn`t be so eccentrically spontaneous with these people if they didn`t feed my sense of humor with their astonishment. During positive or negative work, some muscles are located in the eccentric phase and others in the concentric phase (agonist/antagonist). For example, the flexion of the arm requires a concentric contraction of the biceps brachii, while the antagonistic muscle, the triceps brachii, lengthens in an eccentric action. In addition, the use of these terms has led to confusion in exercise and muscle contraction. Given the need to clarify this issue, we suggest that the term positive or negative work2 is better suited to describe an exercise, whereas in another context it would be more correct to use bending/extension or adduction/removal.8 Mr. Shepperd is a middle-aged man and takes care of his sheep fairly, but sometimes in an eccentric way. Eccentric contraction occurs when a muscle lengthens when it contracts. Muscle pain often results from exercises that require muscles to contract eccentrically.

Jogging on a steep hill, for example, requires an eccentric contraction of the quadriceps muscles. From a physical point of view, during positive (rise/acceleration) or negative (lowering/deceleration) work (Asmussen, 1953), some muscles are in eccentric mode. For example, the biceps brachii contracts concentrically during concentric flexion of the elbow, while the antagonist muscle, triceps brachii, contracts slightly eccentrically – to allow precision of movement. In other words, when resisting the leg press machine, the quadriceps contracts eccentrically, while the biceps femoris contracts slightly concentrically – to allow precision of movement. In both cases, there is a lack of a necessary dynamic description of the exercise – for example, „there is positive/negative work”. The first example should highlight the development of positive work, while the second example is characterized by negative work. What areas do concentric/eccentric terms cover? This inclusion takes into account the use and possible misuse of the terms concentric and eccentric in 3 possible contexts: First, the origin of the terms; second, different approaches; and thirdly, possible uses. To our knowledge, 4 articles have been published in Sports Health in which the term concentric/eccentric exercise is abused, 1,3,6,7, while no article has used the terms correctly. The origin of the terms „concentric and eccentric” was associated with muscle contraction in the science of fundamental physiology. Already in „1925”, Hill defined two types of muscle contractions (Hill, 1925): isometric (muscle length does not change during contraction) and isotonic.

With this last contraction, the tension remains unchanged while the muscle length changes. There are two types of isotonic contractions: (a) concentric and (b) eccentric (Hill, 1925). With concentric contraction, muscle tension increases to meet resistance and remains stable as the muscle shortens. During eccentric contraction, the muscle lengthens because the resistance is greater than the force generated by the muscle.