Category: D

  • Dynamic (rhythmical) stretching

    Moving body parts through a full range of motion in a slow controlled manner. Differs from ballistic stretching in that it does not involve bouncing motions.  

  • Dynamic stabilization

    The body’s ability to maintain neutral, or near neutral postural alignment (a stable position) while moving. An integrated function of neuromuscular systems requiring muscles to contract and fixate the body against fluctuating outside forces, providing postural support with fine adjustments in muscle tension. The term usually pertains to a function of the trunk, shoulder, and…

  • Duty

    The responsibility and moral obligation of the professional to perform the services following industry standards and guidelines. The activities which a person has to do as part of their job.  

  • Duration of training

    The length of time an individual exercises.  

  • Drowning

    A drowning victim is typically a person with little or no swimming skills who suddenly finds himself or herself in deep water and panics. Additionally, a person in distress can become a drowning victim if he or she panics. Death as a result of inhaling liquid. Suffocation or near-suffocation from submersion in water or other…

  • Drag coefficient

    Experimentally determined value that represents the relative effect of an object’s frontal profile on its fluid drag.  

  • 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.  

  • 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…

  • Directional cue

    Transitional cue to explain the desired direction you want your students to travel or move their bodies.  

  • 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…