Table 1. Comparison of the treadmill running cardiopulmonary exercise test and the graded karate test responses.
CPET GKT p (ES)
Maximal Oxygen Uptake (mL·kg-1·min-1) 58.3 (3.5) 57.4 (5.1) 0.53 (0.24)
Maximal Heart Rate (beats·min-1) 193(10) 192(6) 0.62 (0.11)
Maximal RER (V̇CO2/V̇O2) 1.17 (0.06) 1.23 (0.11) 0.09 (0.70)
Maximal V̇E (L·min-1) 129.1 (22.2) 132.1 (19.4) 0.44 (0.15)
Peak Blood Lactate (mmol·L-1) 13.1 (3.0) 14.6 (3.4) 0.14 (0.48)
Test Duration (s) 640(86) 351(71) <0.001* (3.69)
Time-to-Maximum (%Duration) NP 98.2 (0.7) 80.5 (13.2) 0.01* (0.93)
Ventilatory Threshold
Oxygen Uptake (mL·kg-1·min-1) 37.6 (4.0) 41.6 (5.0) 0.02* (0.99)
Oxygen Uptake (%MAX) 64.4 (4.3) 72.6 (6.5) 0.005* (1.47)
Heart Rate (beats·min-1) 149(16) 170(10) <0.001* (1.55)
Heart Rate (%MAX) 77.3 (7.2) 89.4 (4.6) <0.001* (1.99)
Time (%Duration) 23.6 (8.5) 19.2 (5.9) 0.21 (0.59)
Rating of Perceived Exertion (0-10) NP 1(1) 2(2) 0.28 (0.34)
Respiratory Compensation Point
Oxygen Uptake (mL·kg-1·min-1) 50.3 (0.43) 51.7 (5.5) 0.43 (0.29)
Oxygen Uptake (%MAX) 86.5 (6.7) 90.1 (4.2) 0.16 (0.65)
Heart Rate (beats.min-1) 178(8) 186(9) 0.02* (0.89)
Heart Rate (%MAX) NP 92.9 (2.2) 97.0 (2.4) 0.02* (0.76)
Time (%Duration) 67.8 (8.6) 61.5 (11.0) 0.23 (0.64)
Rating of Perceived Exertion (0-10) 6(2) 6(2) 0.57 (0.22)
(NP) denotes non-parametric data. Parametric data presented as mean (standard deviation). Non-parametric data presented as median (interquartile range). CPET - Running Cardiopulmonary Exercise Test. GKT – Graded Karate Test. RER – Respiratory Exchange Ratio. V̇CO2 – Carbon dioxide production. V̇O2 – Oxygen uptake. V̇E – Minute ventilation. (*) denotes significant difference (p ≤ 0.05). Effect size (ES) was calculated with Hedge’s g for parametric data, and Z-value was divided by the square root of the sample size (r) for non-parametric data.