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KIN 3600
Lec 13
| Question | Answer |
|---|---|
| Anaerobic Threshold | power output & oxygen consumption that increase blood lactate concentration w/ an increase incremental exercise |
| ^ power output | blood lactate stays same |
| ^ further power | ^ blood lactate until fatigue |
| when is Lactate is produced? | ALL LEVELS OF EXERCISE |
| LTR is ^ several folds during exercise | which blood HLA remains the same |
| ^ production did not result | an ^ in blood lactate concentration |
| glycerolphorphate shuttle | Transport H+ from NADH+H+ to the mitochondrial membrane resulting in the HLA (Epinephrine, Thyroxin, Glucagon, Cortisol) |
| ^ production of lactate concentration is not related to | lack of O2 in mitochondria … b/c of excessive of hormone stimulation in glycogenolysis |
| v removal of lactate | ^ blood lactate concentration |
| why does the v removal of lactate = ^ blood lactate concentration | to do with lactate acid removing organs to the skeletal muscles which are involved in lactate production |
| Fast-Twitch Glycolytic muscle fibers | - ^ Force production -Produce lactic acid ^ (no lack of oxygen) - ^ intensity = ^fibers |
| OBLA stands for | Onset of Blood Lactate Accumulation |
| what is OBLA | imbalance between lactate production and removal |
| If exercise intensity is below or @ OBLA | the exercise may be maintained for a long time |
| If exercise intensity is above the OBLA | The fatigue is near prediction |
| VO2 max is a best indicator of | maximal aerobic power |
| VO2 MAX is Not best indicator of | endurance performance |
| Relative OBLA | = absolute OBLA / maximum consumption x 100 |
| High endurance trained individual who also have the talent of a world class runner soon can have lactate threshold which is at 92-95% of maximal oxygen consumption | - Means this person can run 95% of its aerobic power without getting tired - Almost maximal speed w/o getting tired |
| Maximal oxygen consumption and OBLA | predict performance accurately |
| Improvements in VO2 max | 5-40% -3-6 months of endurance training then plateau |
| Is it possible to improve OBLA? | YES, ^ lactate threshold during endurance training |
| Improvements in OBLA | improvements progressively for years, even w/o Improvements in VO2 max |
| Ventilatory Threshold | -How much air you breathe per min -Can test w/o blood but some people OBLA do not show |
| McArdle Syndrome | lack of absence of glycogen phosphorylation |
| Ventilation threshold is unrelated to | the blood lactate concentration |
| 1 calorie | is the heat energy required to 1kg of pure water by 1°C |
| 1 kilocalorie | 1000 calories |
| 1kilo calorie | 1000g H2O by 1°C |
| 1 Newton | Force that imparts acceleration of 1m-sec to a mass of 1kg |
| 1 Nm | Joule – a unit of work |
| 1 Kcal | 4186. 85 joules (J) |
| 1 Nm·sec-1 | 1 Watt (W) or 1 J·sec-1 |
| Metabolism is | the arithmetic sum of the energy exchanged during all the energy transformation processes in an organism. |
Created by:
rmart11
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