Training and competition predictions and prescriptions are always based on level tracks. Therefore, reference speeds and heart rates (HR) would help an athlete in altitude profile in order to run decline and incline optimally without overstraining and underperforming. 11 physically active participants performed five graded incremental tests with different decline and incline degrees (-2%, 0%, 2%, 4% and 6%). HR was measured continuously and a characteristic HR for each step was determined. HRs can be estimated best with a third order polynomial with a percentage value of decline and incline degree as single variable. Function parameters partly show high individual variation. Knowing the characteristic level HRs, reference HRs can be determined. Based on these, reference speed can be determined for more detailed prescriptions.
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