Table 2.  Physiological/perceptual responses of tennis players during the off-court and on-court interval training sessions. Data are means (ąSD).
 

Set 1

 

Set 2

 

Set 3

 

Set 4

 

Interaction
(IT x Set)

  Parameters

Off-Court

On-Court

Off-Court

On-Court

Off-Court

On-Court

Off-Court

On-Court

  %HRmax

93.8 (2.5)a,b,c

94.2 (2.9)a,b,c

96 (2.1)b,c

95.7 (2.0)b,c

96.9 (1.7)c

96.6 (1.4)c

97.5 (1.8)

97.5 (1.1)

.93

  LA

3.4  (.7)a,b,c

4.4 (2.2)a,b,c

6.7 (1.3)

6.8 (2.3)

7.3 (1.8)

6.7 (1.6)

8.1 (1.6)

7.2 (2.2)

.64

  RPE

14.8 (2.1)a,b,c

15.1 (1.8)a,b,c

16.3 (2.2)b,c

16.1 (1.3)b,c

17.3 (2.1)c

16.6 (1.5)c

18 (1.9)

17.3 (1.6)

.50

%HRmax: percentage of maximum HR; LA: blood lactate concentration (mmol.L-1); RPE: ratings of perceived exertion; IT: interval training; a: significant difference vs. Set 2 (p < 0.05), b: vs. Set 3, c: vs. Set 4.