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CHR-test

Exercise Physiology. CHR-test. C lamped H eart R ate test. CHR-test. is an functional test of cardiovascular system based on the principle of feedback control of exercise intensity by hear rate. Clamped HR = fixed in set range ( ±4 ). 168. 160. CHR-test. Devices:

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CHR-test

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  1. Exercise Physiology CHR-test Clamped Heart Rate test

  2. CHR-test is an functional test of cardiovascular system based on the principle of feedback control of exercise intensity by hear rate Clamped HR = fixed in set range (±4) 168 160

  3. CHR-test • Devices: • bicycle ergometer connected to PC • hear rate monitor connected to PC Feedback control of exercise intensity by heart rate 168 160 load

  4. CHR-test Target HR (HRt) optimal exercise intensity closely below anaerobic threshold anaerobic threshold (AnP) 1] by measurement (lab or field tests) 2] calculated from VO2max - VO2max can be measured, calculated by regression’s equations or guessed

  5. CHR-test AnT calculation from VO2max (ml/kg/min) AnT = VO2max/3,5 + 60 AnT = 35/3,5 + 60 AnT = 70 %VO2max 60 % of VO2max - AT 1 MET

  6. CHR-test AnT calculation from VO2max AnT = VO2max/3,5 + 60 AnT = 35/3,5 + 60 AnT = 70 %VO2max % MHRR = % VO2max

  7. CHR-test MHRR = maximal heart rate reserve Karvonen et al. (1957): MHRR = HRmax – HRrest TFmax 200 MHRR = 130 beat/min 161 70 % MHRR = 130 × 0,7 = 91 91 + 70 = 161 TFklid 70

  8. MHRR CHR-test MHRR = maximal heart rate reserve Karvonen et al. (1957): MHRR = HRmax – HRrest

  9. CHR-test MHRR = maximal heart rate reserve Karvonen et al. (1957): MHRR = HRmax – HRrest % VO2max = % MHRR for example: 70 % VO2max = 70 % MHRR

  10. VO2max/kg 45 ml/kg/min HRt = HRt = HRmax – HRrest 200 – 70 + 0.6 + 0.6 70 HRrest × × + + 350 350 CHR-test Target HR (HRt) for example: average man, 20-year HRt = 165 ± 4

  11. CHR-test 1] HRt = 165 ± 4 2] duration = 30 minutes (without warming up) 3] initial load Wi = k × weight [kg] values of k:

  12. CHR-test 1] HRt = 165 ± 4 2] duration = 30 minutes (without warming up) 3] initial load Wi = k × weight [kg] beginning of test – 50% of Wi after 30 seconds – 75% of Wi warm up 3 – 6 min after 60 seconds – 100% of Wi than 5 W every 30 s till HRt is reached After reaching HRt own test starts – 30 minutes

  13. Values: 1) W1 - load et the beginning of test 2) Wx - average load during test 3) N - number of changes of load [W] [HR] [HRt±4] [W1] [Wi 100%] [Wi 75%] [Wi 50%] 3.5 min 30 min Warm up test

  14. Values: 1) W1 - load et the beginning of test 2) Wx - average load during test 3) N - number of changes of load Evaluated parameters of CHR test: 1) Efficiency of cardiovascular system during short term exercise (EDSE) – speed ability based on W1 2) Efficiency of cardiovascular system during long term exercise (EDLE) – endurance ability based on Wx

  15. Values: 1) W1 - load et the beginning of test 2) Wx - average load during test 3) N - number of changes of load Evaluated parameters of CHR test: 3) Stability of reaction of cardiovascular system on load (SOL) – familiarity with the exercise intensity based on N 3) Complex index (CI) – associated parameter 1, 2 and 3

  16. Evaluated parameters of CHR test: each parameter is by use of knowing norm conversed on point scale 0 + 5 - 5 average very poor excellent

  17. CHR-test enables: 1] evaluation of cardiovascular system... 2] prescription of exercise program CHR-test is one training unit controlled in laboratory. On the basis of that the recommendation of optimal exercise intensity (optimal HR) is done. Exercise program: • 3.5/week • 30-45 minutes • optimal HR (range±5)

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