uniform circular motion
| isotonic exercise | Contraction of a muscle, the tension remaining constant. Since the contractile force is proportional to the overlap of the filaments and the overlap is varying, the numbers of active cross bridges must be changing. (18 Nov 1997) |
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| treadmill, exercise | A continuous EKG recording of the heart as the patient performs increasing levels of exercise. In addition to detecting abnormal heart rhythms (arrhythmias), the exercise treadmill is a screening test for the presence of narrowed coronary arteries that can limit the supply of oxygenated blood to the heart muscle during exercise. (12 Dec 1998) |
| two-step exercise test | A test used mainly for coronary insufficiency; significant depression of RS-T in the electrocardiogram is considered abnormal and suggests coronary insufficiency. (05 Mar 2000) |
| exercise | 1. The act of exercising; a setting in action or practicing; employment in the proper mode of activity; exertion; application; use; habitual activity; occupation, in general; practice. "exercise of the important function confided by the constitution to the legislature." (Jefferson) "O we will walk this world, Yoked in all exercise of noble end." (Tennyson) 2. Exertion for the sake of training or improvement whether physical, intellectual, or moral; practice to acquire skill, knowledge, virtue, perfectness, grace, etc. "Desire of knightly exercise." "An exercise of the eyes and memory." (Locke) 3. Bodily exertion for the sake of keeping the organs and functions in a healthy state; hygienic activity; as, to take exercise ob horseback. "The wise for cure on exercise depend." (Dryden) 4. The performance of an office, a ceremony, or a religious duty. "Lewis refused even those of the church of England . . . The public exercise of their religion." (Addison) "To draw him from his holy exercise." (Shak) 5. That which is done for the sake of exercising, practicing, training, or promoting skill, health, mental, improvement, moral discipline, etc.; that which is assigned or prescribed for such ebbs; hence, a disquisition; a lesson; a task; as, military or naval exercises; musical exercises; an exercise in composition. "The clumsy exercises of the European tourney." (Prescott) "He seems to have taken a degree, and preformed public exercises in Cambridge, in 1565." (Brydges) 6. That which gives practice; a trial; a test. "Patience is more oft the exercise Of saints, the trial of their fortitude. <medicine>" (Milton) Exercise bone, a deposit of bony matter in the soft tissues, produced by pressure or exertion. Origin: F. Exercice, L. Exercitium, from exercere, exercitum, to drive on, keep, busy, prob. Orig, to thrust or drive out of the inclosure; ex out + arcere to shut up, inclose. See Ark. Source: Websters Dictionary (01 Mar 1998) |
| exercise, aerobic | Brisk exercise that promotes the circulation of oxygen through the blood. Examples of aerobic exercises including walking, running, swimming, and cycling. (12 Dec 1998) |
| exercise asthma | <chest medicine> A disease process that is characterised by paradoxical narrowing of the bronchi (lung passageways) making breathing difficult. Treatment includes bronchodilators which are given orally or delivered as an aerosol (inhaled). Corticosteroids are reserved for more difficult cases. Symptoms include wheezing, difficulty breathing (particularly exhaling air) and tightness in the chest. Factors which can exacerbate asthma include rapid changes in temperature or humidity, allergies, upper respiratory infections, exercise, stress or smoke (cigarette). See: status asthmaticus. (27 Sep 1997) |
| exercise bone | Heterotopic bone ossification of the tendon of the adductor longus muscle from strain in horseback riding. Synonym: cavalry bone, exercise bone. (05 Mar 2000) |
| exercise-induced amenorrhoea | The temporary cessation of menstrual function due to strenuous, daily exercise, as in jogging; increased endorphins inhibiting hypothalamic function. (05 Mar 2000) |
| exercise radionuclide angiocardiography | Radionuclide angiocardiography while performing exercise, such as on a treadmill or bicycle. (05 Mar 2000) |
| exercise test | Controlled physical activity, more strenuous than at rest, which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used. The intensity of exercise is often graded, using criteria such as rate of work done, oxygen consumption, and heart rate. Physiological data obtained from an exercise test may be used for diagnosis, prognosis, and evaluation of disease severity, and to evaluate therapy. Data may also be used in prescribing exercise by determining a person's exercise capacity. (12 Dec 1998) |
| exercise therapy | Motion of the body or its parts to relieve symptoms or to improve function, leading to physical fitness, but not physical education and training. (12 Dec 1998) |
| exercise tolerance | The exercise capacity of an individual as measured by endurance (maximal exercise duration and/or maximal attained work load) during an exercise test. (12 Dec 1998) |
| exercise treadmill | A continuous EKG recording of the heart as the patient performs increasing levels of exercise. The exercise treadmill permits the detection of abnormal heart rhythms (arrhythmias) and provides a screening test for the presence of narrowed arteries to the heart (coronary arteries). Narrowing of these arteries can limit the supply of oxygenated blood to the heart muscle during exercise. (12 Dec 1998) |