Mindblown: a blog about philosophy.
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Hypoglycemia
An imbalance of glucose levels (low level) caused by various factors. Signs and symptoms include sweaty or clammy skin, hunger, feeling confused, dizziness, rapid heart rate, feeling nervous or shaky, and mood changes. Abnormally low level of blood sugar. An abnormally low blood glucose concentration, characterized by a number of symptoms such as dizziness, nausea,…
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Hyperextension
Going beyond neutral extension. To increase the angle of a joint past the normal range of motion. The excessive extension of a limb or joint, usually followed by pain and some inflammation. Extreme extension or overextension of a joint of the body. The act of stretching an arm or leg beyond its usual limits of…
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Hydrostatic pressure
The pressure exerted by molecules of a fluid on an immersed body. The pressure of fluids against their container. The pressure exerted by a fluid within a closed system. The pressure generated within a fluid system, either due to gravity or the force of muscle contractions, like the blood pressure generated by the heart’s beating.…
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Human chain
Several individuals link hands and arms to form a line while standing in the water to access a person in distress.
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Hinge or ginglymus joint
Involves two articular surfaces that restrict movement primarily to one axis. Example: elbow, knee, ankle.
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Heat stroke
Overexposure to heat combined with inadequate rehydration can cause heat stroke, which is a medical emergency. The symptoms are hot, dry, very red skin; generally no perspiration; rapid and strong pulse; labored breathing; loss of consciousness. Acute medical emergency characterized by rectal temperature at 105° or higher and no sweating, caused by failure of the…
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Heat exhaustion
Overexposure to heat combined with inadequate rehydration can cause heat exhaustion. The symptoms are pale, clammy skin; profuse sweating; dizziness; weak, rapid pulse; shallow breathing; nausea; headache; and loss of consciousness. The collapse of an individual, characterized by prolonged sweating and inadequate replacement of salt and fluid without failure of the body’s heat regulating system.…
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Heat cramps
Overexposure to heat combined with inadequate rehydration can cause muscle cramping (calf cramping is common). A painful condition resulting in involuntary muscle contractions due to loss of body fluids and electrolytes during heavy exercise. Cramp produced by loss of salt from the body in very hot conditions. A condition caused by prolonged activity in high…
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Heart rate reserve (HRR)
Maximal heart rate minus resting heart rate. The difference between your maximal and resting heart rates. Difference between the maximum heart rate and the resting heart rate.
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Heart rate
The number of times the heart beats or completes a cardiac cycle in one minute. The number of cardiac cycles per minute. The number of times per minute that the heart fills with blood and then pumps the blood into the vascular system. The number of times the heart beats per minute. Number of heart…
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