text: Glossary
  ability group run
  An endurance physical training activity.
  activation
  The theory that emotion is measurable as changes in an individual’s level of neural stimulation.
  active nutrition
  Fuels the arduous activities and events performed as part of occupations and covers fueling before
  during and after these activities.
  acute mountain sickness
  A life-threatening condition resulting from extended periods of exposure to high-altitude, low-oxygen
  environments.
  adenosine triphosphate
  A large molecule composed of adenosine and three simpler components called phosphate groups that
  release energy through chemical reactions that occur during physical activity.
  aerobic endurance
  A component of fitness that involves long-duration, low-intensity physical activity.
  agility
  The ability to bend, rotate and twist in the frontal, transverse and sagittal planes and use that ability to
  change direction.
  anaerobic endurance
  A component of fitness that involves short-duration, high-intensity physical activity.
  anatomy
  The physical structure of the body.
  angular velocity
  The rate of change in position of a person or object generated by force of motion as it revolves around
  an axis.
  Army Fit
  The Army’s online resource that provides tools for leaders, individuals, and teams. The resources
  cover five dimensions; physical, emotional, social, spiritual, and Family.
  attention
  The mental faculty of considering or taking notice of someone or something.
  autonomic nervous system
  The part of the nervous system that functions without conscious input in order to stimulate and control
  the muscle tissue in the heart, organs, glands, blood vessels, endocrine system and the lymphatic
  system.
  base period
  Physical training completed during the initial phase in which basic abilities of the Soldier progress
  from the Future Soldier Program to the first unit of assignment.
  body composition
  The percentage of lean muscle and other body tissues.
  bone
  The specialized tissue that form the skeleton, the complex formation for muscles to attach to and
  cavities to protect vital structures such as the brain, heart and spinal cord.
  build period
  Is the four to eight week period when the abilities from the Base period are built upon with higher
  intensity and increased volume of training.