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Asthenia or asthaenia (Greek: ἀσθένεια, literally lack of strength but also disease) is a medical term referring to a condition in which the body lacks or has lost strength either as a whole or in any of its parts. It is a poorly defined condition that can include true or primary muscle weakness or perceived muscle weakness. [10]
Gowers's sign is a medical sign that indicates weakness of the proximal muscles, namely those of the lower limb. The sign describes a patient that has to use their hands and arms to "walk" up their own body from a squatting position due to lack of hip and thigh muscle strength. It is named after William Richard Gowers. [1] [2]
Muscle weakness can also be classified as either "proximal" or "distal" based on the location of the muscles that it affects. Proximal muscle weakness affects muscles closest to the body's midline, while distal muscle weakness affects muscles further out on the limbs. Proximal muscle weakness can be seen in Cushing's syndrome [18] and ...
Functional weakness is weakness of an arm or leg without evidence of damage or a disease of the nervous system. Patients with functional weakness experience symptoms of limb weakness which can be disabling and frightening such as problems walking or a 'heaviness' down one side, dropping things or a feeling that a limb just doesn't feel normal or 'part of them'.
Muscle imbalance can be characterized by different factors, namely where the muscle imbalance is on the body, diagnosis varies for these specific areas as each area needs to be handled differently. Other signs include joint pain or muscular pain, abnormal joint movement patterns or in some cases, muscle tears and lesions. [ 11 ]
Substrate shortage is one of the causes of metabolic fatigue. Substrates are depleted during exercise or are unable to be metabolized (e.g. metabolic myopathies), resulting in a lack of intracellular energy sources to fuel contractions. In essence, the muscle stops contracting because it lacks the energy to do so.
During starvation, the body uses the fat in yellow marrow for energy. [7] The red marrow of some bones is an important site for blood cell production, approximately 2.6 million red blood cells per second in order to replace existing cells that have been destroyed by the liver. [4] Here all erythrocytes, platelets, and most leukocytes form in ...
Weakness or asthenia is a symptom of a number of different conditions. Weakness may also refer to: Muscle weakness, the inability to exert force with one's muscles; The Weakness, the thirty-seventh book in the Animorphs series "Weakness", a song by Opeth from Damnation "Weakness", a song by The Wanted from The Wanted