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Phys3 Exercise train
Question | Answer |
---|---|
How do women compare to men in exercise performance? | 1.VO2 12% lower. 2.Dec muscle mass. 3.Inc body fat. 4.Dec Hb levels. 5.Inc Flexibility. **b/c they are smaller and have less muscle mass |
What is required for women to achieve the same power output as men? | Working at a higher % of VO2max. |
Do women respond to exercise training the same way & extent as men? | YES. **Physiologically they adapt the same |
When training for a specific event/sport, what energy systems should be targeted during training? | those being STRESSED during Performance. |
Although they have the same % of Fast twitch fibers, how does the fiber size of a weight lifter compare to those of a non-trained individual? | They will be 2X the size b/c the weight lifter is stressing the ATP-PC system in those TypeIIb FT fibers. |
muscle adaptations: Would a weight lifter or an endurance trainer have a higher capillary to fiber ratio? | Edurance trainer! they are changing the BF CV delivery and aren't creating the large hypertrophy in muscle fibers b/c they are training the glcolysis and fat oxidation systems |
Muscle adaptations: What determines the fiber type? | rate of stimulation determines a fast twitch or slow twitch. Fibers themselves can adapt to either type. |
Muscle adaptations: What will happen to a fiber that is continuously recruited? | it will become hypertrophied. |
Biochemical adaptations: what type of enzymes would you see increased in those training their ATP-PC systems for strength & power? | 1.Myosin ATPase. 2.Myokinase. 3.Creatine Phosphokinase. **these are uncahnged in an aerobic trainer |
Biochemical changes: what type of enzymes would you see increased in those doing aerobic training for endurance? | 1.Citrate synthase (CS, used in Krebs cycle). 2.Cytochrome Oxidase. 3.3-HAD (used in fat ox). **there is also a large increase in mitochondrial vol & glycogen. |
Biochemical changes: how will cytocrhome C and citrate synthase levels differ in a sedentary Vs. Trained person? | They double in all muscle fiber types. **except the heart, it is already the optimum level. |
Biochemical changes: How does O2 uptake and P:O ratio differ in a sedentary Vs. trained person? | O2 uptake will DOUBLE in the trained person. P:O ratio doesnt change b/c the body cant alter that. **will also see 50% Inc in Pyruvate+malate oxidation, succinate+rotenone oxidation,and Ascorbate. |
What would happen if the P:O ratio was decreased? | WEIGHT LOSS. |
Hormonal changes: Glucagons response to exercise | Plasma glucagon decreases or becomes blunted. |
Hormonal changes: Insulin response to exercise | 1.Inc Plasma insulin. 2.Inc Insulin Sensitivity (INC in insulin receptors on the membrane & glucose transporters). **perscribe exercise with diabetes. |
Physiological changes: sedentary Vs Trained: Max HR? | Max HR: 0% change. |
Health benefits of exercise training | 1.Dec body wgt. 2.Inc MET. 3.Inc bone density. 4.Inc immunity. 5.Dec BL lipids. 6.Alleviated depression. 7.Dec BP. 8.Dec cancer risk. |
Pysiological changes b/w sedentary Vs Trained: RHR? | RHR: 40-100% change. |
Pysiological changes b/w sedentary Vs Trained: Max SV? | Max SV: 50% change. |
Pysiological changes b/w sedentary Vs Trained: Max CO? | Max CO: 50-100% change. |
Pysiological changes b/w sedentary Vs Trained: O2 extraction | O2 extraction: 10% change. |
Pysiological changes b/w sedentary Vs Trained: VO2max | VO2max: 100% change. |
Pysiological changes b/w sedentary Vs Trained: BV | BV: 20-75% change. |
Pysiological changes b/w sedentary Vs Trained: Lactate threshold | Lactate threshold: 30-60% change. |