Mindblown: a blog about philosophy.
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Dive reflex
Primitive reflex associated with a nerve found in the nasal area. When the face is submerged in water, this reflex lowers heart rate and blood pressure.
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Distress
A person in distress is one who can swim or float but can no longer make forward progress. Potentially harmful stress. Unhappiness caused by pain or worry. Distress refers to unpleasant or harmful stress under which health and performance begin to decline. A negative stress that can make a person sick or can keep a…
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Directional cue
Transitional cue to explain the desired direction you want your students to travel or move their bodies.
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Dietary guidelines for Americans
Published jointly every five years since 1980 by the Department of Health and Human Services (HHS) and the Department of Agriculture (USDA), these guidelines provide authoritative advice for people two years and older about how good dietary habits can promote health and reduce risk for major chronic diseases. A list of nine key messages based…
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Diastole (diastolic pressure)
The blood pressure when the heart is resting; specifically, the minimum arterial pressure during relaxation and dilatation of the ventricles of the heart when the ventricles fill with blood. The time at which the heart is in a state of relaxation is called diastole. Blood pressure within the arteries when the heart is in relaxation…
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Diastasis recti
A separation of the abdominal muscle that might occur during pregnancy. A separation of the two halves of the rectus abdominis muscles in the midline at the linea alba. This condition is benign when it occurs in pregnant women.
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Diaphragm
A dome-shaped skeletal muscle between the thoracic and abdominal cavities. Domelike sheet of skeletal muscle that separates the thoracic and abdominal cavities; contraction during inspiration expands the thoracic (chest) cavity. A contraceptive device that fits over the entrance of the cervix and serves as a barrier to sperm. Its effectiveness as a contraceptive is increased…
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Depression
Moving a body part toward the feet, such as pressing your shoulders downward. When used to describe a mood, depression refers to feelings of sadness, despair, and discouragement. As such, depression may be a normal feeling state. The overt manifestations are highly variable and may be culture specific. Depression may be a symptom seen in…
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Deep-water exercise
Exercise performed in water depths that allow the participant to remain vertical and yet not touch the pool bottom, providing a truly nonimpact workout. Flotation equipment is typically used to maintain correct alignment.
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Deconditioned
A decline from a condition of physical fitness, as through a prolonged period of inactivity.
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