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Ex phys ch 13
final exam
| Question | Answer |
|---|---|
| overload principle | training effect occurs when a system is exercised at a level beyond which it is normally accustomed, states that system of tissue must be challenged with an intensity, duration, or frequency of exercise to which it is no accustomed. |
| specificity principle | training effect is specific to muscle fibers involved, energy system involved (aerobic vs. anaerobic), velocity of contraction, type of contraction |
| principle of reversibility | gains are lost when overload is removed |
| components of training to increase VO2max | use of large muscle groups, dynamic activity, 20-60 min, 3-5 times/wk, 50-85% VO2max |
| Vo2max equation | Vo2max= HR max x SV max x (a-VO2) max |
| factors increasing stroke volume | increased ventricular volume, increased filling time and venous return, increased plasma volume leading to increase in end diastolic volume ("preload"), others- increased contracitility and decreased total peripheral resistance ("afterload") |
| effects of endurance training on maintenance of homeostasis | more rapid transition from rest to steady-state, reduced reliance on glycogen stores, cardiovascular and thermoregulatory adaptations, due to neural and hormonal adaptations, also due to structural and biochemical changes in muscle |
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