Cardiovascular / respiratory endurance – The ability of body systems to gather, process, and deliver oxygen. Stamina – The ability of body systems to process, deliver, store, and utilize energy. Strength – The ability of a muscular unit, or combination of muscular units, to apply force. Flexibility – The ability to maximize the range of motion at a given joint. Power – The ability of a muscular unit, or combination of muscular units, to apply maximum force in minimum time. Speed – The ability to minimize the time cycle of a repeated movement. Coordination – The ability to combine several distinct movement patterns into a singular distinct movement. Agility – The ability to minimize transition time from one movement pattern to another. Balance – The ability to control the placement of the body’s center of gravity in relation to its support base. Accuracy – The ability to control movement in a given direction or at a given intensity. Improvements in endurance, stamina, strength, andflexibility come about through training. Training refers to activity that improves performance through a measurable organic change in the body. (1 – 4) By contrast improvements in coordination, agility, balance, and accuracy come about through practice. Practice refers to activity that improves performance through changes in the nervous system. (7 – 10) Power and speed are adaptations of both training AND practice. (5 & 6)