Characteristic, median [25th– 75thpercentiles] | Inactive men N = 31 | Endurance-trained men N = 31 | P Value |
---|---|---|---|
Age, years | 37 [29–48] | 41 [26–47] | 0.714 |
Height, cm | 177 [171–183] | 180 [177–185] | 0.051 |
Weight, kg | 73 [69–85] | 75 [69–84] | 0.961 |
BMI, kg. m2 | 24.2 [22.5-25.6] | 23.1 [21.8-24.9] | 0.215 |
Rowing/Triathlon | 0 / 0 | 19 / 12 | <0.001 |
Sport practice, hours/week | 0.00 [0.00-0.00] | 7.00 [5.00-10.00] | <0.001 |
FEV1,% predicted | 108 [100–115] | 114 [106–123] | 0.082 |
Exercise test | |||
Peak work rate, watts | 201 [181–226] | 318 [274–353] | <0.001 |
Peak work rate,% predicted | 92 [80–97] | 133 [120–144] | <0.001 |
Peak O2, L.kg.min-1 | 31.4 [28.5-37.4] | 46.3 [39.6-52.6] | <0.001 |
Peak O2,% predicted | 89 [75–101] | 125 [114–136] | <0.001 |
Peak minute ventilation, L.min-1 | 86 [72–100] | 127 [107–139] | <0.001 |
Peak minute ventilation, % predicted | 88 [63–105] | 110 [93–121] | 0.001 |
Peak respiratory rate, cycles.min-1 | 34 [29–39] | 44 [37–49] | 0.001 |
Ventilatory capacity, % | 61 [45–71] | 77 [65–86] | <0.001 |
Peak heart rate, bpm.min-1 | 175 [162–183] | 174 [168–183] | 0.617 |
Δ O2/Δwork slope | 9.3 [8.8-9.8] | 9.4 [8.8-10.0] | 0.468 |
Peak breathlessness, Borg | 5.0 [2.5-7.0] | 7.0 [4.0-8.0] | 0.570 |
Peak leg discomfort, Borg | 7.0 [4.0-9.0] | 5.0 [4.0-8.0] | 0.233 |
Borg score at 30% Emax predicted | 2.0 [1.0-2.5] | 1.0 [0.5-2.0] | 0.020 |
Power Law of O 2 -Breathlessness | |||
Constant a | 0.087 [0.002-0.650] | 0.001 [0.00001-0.202] | 0.035 |
Exponent b | 2.69 [2.05-3.56] | 2.84 [2.10-4.35] | 0.548 |