Table 2.
Rest | 74 (68-83) |
Heart rate, beats/min | 74 (68-83) |
Ventilatory threshold | |
Treadmill speed, mph | 3.00 (2.60-3.30) |
Treadmill speed, m/min | 80 (70-89) |
Treadmill grade, % | 9.0 (6.0-12.0) |
Treadmill grade, decimal | 0.09 (0.06-0.12) |
Treadmill speed x grade | 6.76 (5.19-8.37) |
Measured heart rate, beats/min | 146 (136-156) |
Heart rate reserve, beats/min | 70 (60-81) |
Age-predicted heart rate at 80%, beats/min | 145 (139-150) |
Difference between measured and age-predicted heart rate at 80%, beats/min | 2 (−7 to −10) |
Peak | |
Treadmill speed, mph | 3.30 (3.00-3.70) |
Treadmill speed, m/min | 89 (80-99) |
Treadmill grade, % | 10.0 (9.0-12.0) |
Treadmill grade, decimal | 0.10 (0.09-0.12) |
Treadmill speed × grade | 9.3 (7.5-11.3) |
Measured heart rate, beats/min | 163 (151-176) |
Heart rate reserve, beats/min | 89 (76-99) |
Age-predicted peak heart, beats/min | 161 (155-168) |
Difference between measured and age-predicted peak heart rate, beats/min | 2 (−7 to −9) |
Values are median (Q1-Q3).
Q = quartile.
7 patients were missing data on resting heart rate; 10 patients were missing data on ventilatory threshold treadmill speed (mph and m/min), grade, heart rate, heart rate reserve, and age-predicted heart rate at 80% beats/min.