Table 2 Descriptive statistics and comparisons of the outcomes analyzed considering the two temperature conditions

Under 16

 Mean heart rate (bpm)

183.0 ± 3.1

189.0 ± 3.5

6.9 | p < 0.001 | d = 1.82

 CR10 Borg (A.U.)

7.2 ± 0.5

8.0 ± 0.4

0.8 | p < 0.001 | d = 1.78

 Passes (n)

5.9 ± 1.2

4.5 ± 1.3

1.4 | p < 0.001 | d = 1.12

 Lost balls (n)

1.3 ± 0.5

1.1 ± 0.4

0.2 | p = 0.157 | d = 0.44

Under 19

 Mean heart rate (bpm)

182.7 ± 3.3

189.1 ± 3.3

6.5 | p < 0.001 | d = 1.83

 CR10 Borg (A.U.)

7.1 ± 0.5

7.8 ± 0.6

0.7 | p < 0.001 | d = 1.56

 Passes (n)

6.0 ± 0.8

4.8 ± 0.8

1.2 | p < 0.001 | d = 1.50

 Lost balls (n)

1.3 ± 0.6

1.1 ± 0.6

0.1 | p = 0.386 | | d = 0.33

Overall

 Mean heart rate (bpm)

182.8 ± 3.2

189.1 ± 3.4

6.2 | p < 0.001 | d = 1.83

 CR10 Borg (A.U.)

7.1 ± 0.5

7.9 ± 0.5

0.7 | p < 0.001 | d = 1.78

 Passes (n)

6.0 ± 1.0

4.7 ± 1.1

1.3 | p < 0.001 | d = 1.04

 Lost balls (n)

1.3 ± 0.5

1.1 ± 0.5

0.1 | p = 0.108 | d = 0.44