1 / 17

Clamped Heart Rate (CHR) Test for Cardiovascular Fitness Evaluation

Explore the Clamped Heart Rate test for evaluating cardiovascular fitness through feedback control of exercise intensity by heart rate. Learn about calculation methods and target heart rates for optimal exercise intensity below anaerobic threshold. The test assesses MHRR and VO2max to prescribe personalized exercise programs for enhanced fitness outcomes.

dcraft
Download Presentation

Clamped Heart Rate (CHR) Test for Cardiovascular Fitness Evaluation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  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)

More Related