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 ...

Health

Is interval training the fountain of youth?

(HealthDay)—High-intensity interval training (HIIT) is an exercise technique done by alternating short bursts of all-out effort in an aerobic activity with periods done at a very slow pace.

Health

Tailoring exercise to your age

(HealthDay)—Exercise is a great way to stay youthful and even turn back the clock on aging. If you're new to exercise or simply want a fitness reboot, here are ideas by the decade.

Health

How to start exercising if you're out of shape

Perhaps your GP has recommended you exercise more, or you've had a recent health scare. Maybe your family's been nagging you to get off the couch or you've decided yourself that it's time to lose some weight.

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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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