Table 6

 Correlation coefficients between tennis field (FT) and treadmill (TT) tests for the maximum values of the various parameters attained by tennis players at the termination of the exercise

VO2VCO2RERVEHRBfVtTe[La]RPE
Bf, breathing frequency; HR, heart rate; [La], blood lactate concentration; RER, respiratory exchange ratio; RPE, rating of perceived exertion; Te, time to exhaustion; VCO2, carbon dioxide production; VE, minute ventilation; VO2, oxygen uptake; Vt, tidal volume.
r Value0.580.620.120.730.600.700.940.210.780.15
p Value0.1040.0770.7560.0250.1170.0340.0010.5910.0140.725