230 | Chapter 9 Appendix B: Explanation of subparts of the CPET TT = Time in Test, in seconds Maximum Workload (Wpeak)= maximum workload achieved during CPET in Watts Heartrate= heartbeats per minute VO2peak = maximal oxygen consumption in L/minute during testing Relative VO2 = maximal oxygen consumption corrected for weight, in mL/kg/min VE peak = Maximum ventilation in L/minute RER= respiratory exchange ratio is the ratio between the metabolic production of carbon dioxide (CO2) and the uptake of oxygen (O2) Anaerobic threshold= Moment when the oxygen consumption rises above a point in which aerobic energy production is supplemented by anaerobic mechanisms, causing a sustained increase in lactate and metabolic acidosis, in VO2/kg VE/VCO2 at anaerobic threshold = Minute ventilation/carbon dioxide production at the moment of anaerobic threshold Perceived level of exertion= Borg-score24; a 15-point scale (6 to 20) used to rate subjective experiences during physical exertion. Score ranges from 6 (no effort) to 20 (absolute maximum effort) 95% predicted heartrate = 95% of the maximum predicted heartrate based on age, formula: (211 - 0.64*age)*95%, heartbeats per minute
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