intro: terminology, units of measure, data collection Flashcards
Muscular strength
may be defined as the maximal force generated in one repetition at a given velocity of exercise
what system does muscular strength measure
atp system
Muscular endurance
Ability of a muscle group to execute repeated contractions over a period of time sufficient to cause muscular fatigue (sit-ups, push-ups, pull-ups
what system does muscular endurance measure
Relies on multiple bioenergetic pathways
Anaerobic pathway
produce ATP at high rates, but in relatively small amounts. limited amounts / high rate
how long is anaerobic endurance
15-30 secs
Anaerobic metabolism
produces atp 2.5 times faster than aerobic but can only support 1 min of maximal exercise
Phosphocreatine
can only sustain 10 seconds of maximal energy
how long is Aerobic metabolism endurance
supports exercise for hours
what does long term duration activities rely on for energy?
Longer duration activities, or prolonged exercise, lasting greater than 60 min, rely more on stored fats and dietary carbohydrate and also require more consideration of nutritional and hydration factors for successful performance than do shorter tasks
aerobic fitness
relies on cardiovascular function and respiratory fitness
Body composition
refers to the composition of the human body with regard to two primary components: fat tissue and fat-free or lean tissue
Force
derived quantity calculated as the product of mass and acceleration
Work
is derived from the product of two basic quantities: force and length
Power
is the variable that expresses the rate of work done