Category: S
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Slightly movable joint
Joint with limited movement where the bones are held together by strong fibrocartilaginous membranes.
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Sliding filament theory
The explanation for how muscles produce force; the thick (myosin) and thin (actin) filaments slide past one another, shortening the entire length of the sarcomere.
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Skill-related components of fitness
Skill-related components of physical fitness target enhanced performance in sports and improved motor skills. The components are commonly defined as agility, balance, coordination, power, speed, and reaction time.
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Skeletal system
All of the bones of the body, associated cartilage, and joints. Those organs, functioning in unity, that are associated with movement, protections of other organs, and stability. The consists of the bones, joints, and ligaments, and is closely associated with the muscular system. The bones of the body that together form a structural framework and…
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Skeletal muscle
The skeletal muscles are voluntary muscles under conscious control; they attach to bones and allow the skeleton to move. One of the muscles that is attached to bone and is under voluntary control. A muscle attached to a bone, which makes a limb move. Muscle tissue that is attached primarily to the bone, moves the…
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Sitting heart rate
Heart rate taken after being seated for 30 minutes. Might be slightly higher than resting heart rate because of body position, medication, drug use, or stress.
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Simple carbohydrates
Composed of monosaccharide or disaccharide units and are easily digested. A sugar that is composed of one or two sugar molecules. Carbohydrates with either a single monosaccharide or two monosaccharides linked by a glycosidic bond (disaccharides) are considered simple carbohydrates and are sometimes referred to as simple sugars. Separate entries are provided for the six…
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Shoulder impingement
Shoulder impingement syndrome is caused by compression of the tendons of the rotator cuff between a part of the shoulder blade and the head of the humerus.
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Short bone
A short bone is basically cube shaped and is about as wide as it is long. Examples of short bones are the tarsals and carpals.
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Shin splints (medial tibial stress syndrome)
Pain and irritation in the shin region of the lower leg. Delayed pain on the front or sides of lower legs, caused by inflammation of the fascia connecting to the leg bones or muscle tears. Pain along the tibia or shin bone, the large bone in the front of the lower leg. This pain can…