Medical research

Researchers explain muscle loss with menopause

In an article recently published in Cell Reports, lead authors Dawn Lowe, Ph.D., Professor in the Department of Rehabilitation Medicine, Division of Physical Therapy and Rehabilitation Science Graduate Program, University ...

Health

Exercises to head off a painful rotator cuff injury

(HealthDay)—The rotator cuff refers to a group of four distinct muscles and tendons that connect to each shoulder and stabilize the humerus, the upper arm bone. These muscles are engaged when you move your shoulder, and ...

Cardiology

New technique uses microcurrent to exercise heart muscle

In a study conducted by MedUni Vienna/Vienna General Hospital, a new type of device has been successfully used for the very first time to strengthen the weakened heart muscle in cardiomyopathy patients. An implanted pulse ...

Diseases, Conditions, Syndromes

New look at atherosclerosis

Atherosclerosis is the slow and progressive narrowing of arteries due to plaque formation. The atherosclerotic plaque forms by local proliferation of leukocytes and vascular smooth muscle cells (VSMCs) in the vessel wall ...

Health

Strengthening muscle may be healthier than losing fat

Focusing on strengthening our muscles rather than losing fat may be a better way to protect ourselves from weight-related hazards like diabetes and cardiovascular disease, investigators say.

Cardiology

Exercising when you have high blood pressure

(HealthDay)—High blood pressure is a serious risk factor for heart disease, stroke and other life-threatening medical conditions. While many people need medication and dietary changes to control their blood pressure, exercise ...

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Muscle

Muscle (from Latin musculus, diminutive of mus "mouse") is the contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. Muscle cells contain contractile filaments that move past each other and change the size of the cell. They are classified as skeletal, cardiac, or smooth muscles. Their function is to produce force and cause motion. Muscles can cause either locomotion of the organism itself or movement of internal organs. Cardiac and smooth muscle contraction occurs without conscious thought and is necessary for survival. Examples are the contraction of the heart and peristalsis which pushes food through the digestive system. Voluntary contraction of the skeletal muscles is used to move the body and can be finely controlled. Examples are movements of the eye, or gross movements like the quadriceps muscle of the thigh. There are two broad types of voluntary muscle fibers: slow twitch and fast twitch. Slow twitch fibers contract for long periods of time but with little force while fast twitch fibers contract quickly and powerfully but fatigue very rapidly.

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