Special Needs to Prescribe Exercise Intensity for Scientific Studies

Figure 2

Error of estimate for percent heart rate reserve (HRR) compared to %HR at the second lactate turn point (LTP₂) as well as the error of estimate for percent HR_max related to the deflection of the heart rate performance curve (kHR) [18, 19] in healthy young male and female sports students, young obese subjects, older healthy subjects, and patients after myocardial infarction [20].

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