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Phys3 Acute exercise
| Question | Answer |
|---|---|
| Is ATP regeneration a fast process? | NO, slow process. |
| What is used to Regenerate ATP-PC system? | Dietary nutrients. **Slow process. |
| Name the 2 basic reasons energy production through the ATP-PC system cannot be sustained for more than several seconds | 1.Limited energy stores. 2.Rate of energy production required is too great. **Once ATP stores are depleted, we are dropping 20% in maximal power. |
| Does a pre-game meal matter to an athlete that is only maximally performing for a few seconds at a time? | NO, b/c they will be relying on the ATP-PC system which will continulously be regenerated during the time they are resting. |
| Why is lactic acid more favorable than pyruvate in an anaerobic situation? | B/c we can still generate ATP from lactate since it can be reconverted to starting material for glycolysis. |
| What energy system would you use when hitting a baseball? | ATP stores. **1-2sec exercise time of very high intensity |
| What energy system would you use during a tennis rally? | PC Stores. **10-15sec exercise time of very high intensity. |
| What energy system would you use during a 400M sprint? | Rpaid glycolysis. **30-60sec exercise time of high intensity. |
| What energy system would you use during a marathon? | Slow glycolysis. **90-120min exercise time of moderate intensity. |
| What is a bigger factor in fatigue: dehydration or glycogen depletion? | DEHYDRATION |
| What is actually happening when an athelete "hits the wall" during exercise? | Depletion of glycogen stores. |
| What energy system would you use during the Tour de France? | Fat oxidation. **350hr of exercise time at low intensity |
| What energy system has the fastest rate/maximal power but the smallest store available? | ATP stores |
| What energy system has the lowest reate/maximal power but the largest store available? | Fat oxidation |
| What systems predominate at rest? | 1.Slow glycolysis, 2.Fat oxidation. **burning 50% carbs and 50% fat. ALL aerobic!! ATP-PC system is dormant. |
| What systems predominate at very intense exercise? | 1.ATP-PC. 2.Rapid glycolysis (once ATP-PC is depleted) |
| What systems predominate at moderate intensity exercise? | 1.Rapid glycolysis (mainly). **ATP-PC is depleted and slow glycolysis cant quite keep up |
| What systems predominate at low to moderate intensity exercise? | 1.Slow glycolsis. 2.Fat oxidation. **Rapid glycolysis and ATP-PC are exhausted. |
| How are these systems organized in terms of exercise intensity and exercise duration. | intensity and duration are inversely proportional so the higher intensity system, the shorter it lasts. |
| Which energy systems are short-term, closed, self-contained systems? | 1.ATP-PC. 2.Rapid glycolysis. |
| Which energy systems are long-term, open systems requiring communication b/w muscle and body? | 1.Slow glycolysis. 2.fat oxidation. |
| Which energy system relys on 1 carbon sources? 3 carbon sources? | 1 carbon: 1.ATP-PC. 2.Rapid Glycolysis. 3 carbon: 1.slow glycolysis. 2.fat oxidation. |
| Contributing factors to fatigue | 1.ATP depletion (suppliments ineffective). 2.PC depletion (suppliments could help). 3.Lactic Acid accumulation (Aerobic warm up helps). 4.Glycogen depletion (high carb diet helps). 5.Dehydration. **4 & 5 are both slow glycolysis effects. |
| What is the rate of fluid absroption? | 8oz per 15-20min. |
| What can delay all causes of fatigue? | Specificity of training. |
| What is a MET? | 1 metabolic: resting metabolic rate. seen in VO2. **4METS is exercising at 4X resting metabolic rate |
| Dynamic (aerobic) Vs. Static (resistance) exercise: HR | 1.Dynamic:200bpm, 2.Static:160-180bpm. |
| Dynamic (aerobic) Vs. Static (resistance) exercise: BP | 1.Dynamic:200/90, 2.Static:225-350/140-250. |
| Dynamic (aerobic) Vs. Static (resistance) exercise: VO2 | 1.Dynamic:20+METS, 2.Static:2METS. |
| Dynamic (aerobic) Vs. Static (resistance) exercise: CO | 1.Dynamic:25L/min, 2.Static:10L/min |
| Dynamic (aerobic) Vs. Static (resistance) exercise: Respirations | 1.Dynamic:50-60/min, 2.Static:20/min |
| Do you get a specific training effect with static exercise? | NO, get a response but no training effect. **has nothing to do with aerobic conditioning and O2 consumption |
| What are the 4 main components of the Exercise Bout? | 1.Warm up (turns on ALL energy systems). 2.Stretching. 3.Conditioning (sports participation). 4.Cool down (HR & BP recovery, removal of waste). |
| When is the BEST time to stretch? | when the muscles are WARM! |
| What does VO2 measure? VO2max? | 1.VO2:amt of O2 consumed by the tissues during any level of aerobic metabolism. 2.VO2max: maximal amt of O2 consumed during exercise by the tissues. |
| 4 Components of exercise Rx? | 1.Frequency. 2.Intensity. 3.Time/duration. 4.Type/mode. |
| What does the RPE scale range from? | 6-20. based on % of VO2max. |
| What is the most important exercise consideration amoungst the elderly? | Maintain functional capacity. **Also reduces risks and adds social aspects. |
| As a clinician, what is an important about exercise consideration with children? | 1.Stop parents/coaches from pressuring kids to compete. 2.Kids should compete based on biological age. |
| Can pregnant women still exercise? | Yes, they need to shorten their duration and be more aware of BL glucose levels |
| Order of Physical activity pyramid (from bottom to top) | 1.ADLs. 2.Developing inefficiencies. 3.Recreational activities. 4.Aerobic exercise. |
| Order of muscular strength pyramid (from bottomw to top) | 1.ROM exercises. 2.Flex exercise/resistance exercise. 3.Strengthening specific muscles. 4.Integrated strength training. |
| Do kids dissapate heat as well as adults? | NO |
Created by:
WeeG
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