Exercise intolerance Totally Explained

Everything about Exercise Intolerance totally explained

Exercise intolerance is a condition where the patient is unable to do physical exercise at the level or for the duration that would be expected of someone in his or her general physical condition, or experiences unusually severe post-exercise pain, fatigue, or other negative effects. Exercise intolerance isn't a disease or syndrome in and of itself, but a symptom. Since there are many possible specific reasons why exercise could be inhibited, this is a rather slippery term. For instance, the patient may experience unusual breathlessness (dyspnea), muscle pain (myalgia), or increasing muscle weakness while exercising, or may, after exercise, experience severe headache, nausea, dizziness or extreme fatigue. In most cases, the specific reason that exercise isn't tolerated is of considerable significance when trying to isolate the cause down to a specific disease.

Causes

Exercise intolerance is primarily found in organic brain diseases, mitochondrial diseases and neuromuscular diseases. It is considered the central symptom in chronic fatigue syndrome. Exercise intolerance can also be caused by heart conditions or conditions that cause back pain. Several heart conditions, such as a cardiac arrhythmia (abnormal heart rate or rhythm) or an aortic valve insufficiency, if severe enough can cause activity problems such as shortness of breath and/or exercise intolerance. People with acute back pain from an injury or chronic back pain (for example, from a degenerative condition) may also experience exercise limitations due to muscle spasms or limited range of spinal motion. Overtraining can also cause the intolerance.

Treatment

Exercise is key for many heart and back patients, and a variety of specific exercise techniques are available for both groups. Some exercise specialists (for example, physical therapists, athletic trainers) are trained in modifications specific to these patients.

Hazards

Certain conditions in particular exist where exercise, particularly rehabilitation, may be contraindicated, including:

decompensated heart failure
recent myocardial infarction
hypertrophic cardiomyopathy or cardiomyopathy from recent myocarditis
active or suspected myocarditis or pericarditis
low left ventricular ejection fraction
severe aortic stenosis
unstable ischemia
unstable arrythmia
irregular or resting pulse greater than 100 bpm
resting systolic blood pressure >200 mm Hg or resting diastolic blood pressure >110 mm Hg
severe pulmonary hypertension
severe chronic fatigue syndrome
suspected or known dissecting aneurysm
recent systemic or pulmonary embolus
pneumothorax and haemoptysis
thrombophlebitis

Other conditions may also preclude exercising under certain conditions. Passive physiotherapy can in some instances be an alternative for some patients unable to safely self-power.

Further Information

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