Category: I
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Insoluble fiber
Unable to dissolve in water, insoluble fiber provides roughage that softens stools; regulates bowel movements; speeds transit of fecal matter through the colon; reduces risk of diverticulosis, some cancers, and appendicitis; and improves the body’s ability to handle glucose. Cellulose, hemicellulose and lignin materials that stimulate intestines, accelerate food transit time and increases weight and…
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Injury report (injury report form)
Written documentation on an incidence or injury that occurred.
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Informed consent form
A signed form documenting that the participant has been fully informed of the risks and possible discomforts involved in a physical fitness program.
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Inferior vena cava
Large vein that carries deoxygenated blood from the lower half of the body into the right atrium. The large vein that returns blood from the lower body regions to the right atrium of the heart. Large vein that returns deoxygenated blood to the heart from the body below the diaphragm. It is formed by junction…
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Inertia
An object remains at rest or in motion with constant velocity unless acted on by a net external force. A lack of activity in the body or mind. State of inactivity or sluggishness (e.g., uterine inertia, in which the contraction of the muscular wall of the uterus is inadequate). Sluggishness or absence of activity in…
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Indirect reinforcement
Motivation resulting from one or more factors in the participant’s surroundings.
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Independent contractor
A person or business that provides goods or services to another entity under terms specified in a contract. A person who works for himself and is not controlled by another, as distinguished from an employee.
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Incomplete proteins
Proteins lacking one or more essential amino acid. Dietary protein that contains fewer than the optimal number or amounts of the essential amino acids. An incomplete protein does not provide all of the essential amino acids in adequate proportions to meet demands for normal growth and development. Historically, plant proteins (except for soy proteins) and…
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Immovable joints
Joint where bones are held together by fibrous connective tissue that forms an interosseous ligament or membrane. No joint cavity and no appreciable movement occurs at this type of joint.
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Imagery cue
A cue that creates an image in the mind of the exercise participant that may be used to facilitate relaxation or even higher intensity training.