Table 3. Mean values (± SD) for running demands from metabolic power approach: metabolic load, absolute and relative distance in the different metabolic power zones depending on the groups.
Periods Forwards (n = 22) Backs (n = 24) p-value ES (Cohen’s d)
ML absolute
(kj)		 1507.8 ± 277.7 1488.5 ± 303.7 .578 Unclear
.1 ± .3
ML relative
(kj.kg-1)		 14.1 ± 2.4 15.7 ± 2.6 .080 Moderate
- .9 ± .8
MPA
(W·kg-1)		 5.0 ± 0.7 5.5 ± .7 * .032 Moderate
- 1.0 ± .7
Distance covered in each metabolic power zones (m) Equivalent
distance		 3040.7 ± 451.1
(63.4 ± 9.6)		 3353.5 ± 98.2
(71.0 ± 10.5) *		 .078
(.036)		 Moderate
- .8 ± .7
(- 1.0 ± .7)
0-10
W·kg-1		 1497.8 ± 313.8
(31.3 ± 6.6)		 1820.6 ± 341.3*
(38.5 ± 7.3) **		 .012
(.008)		 Large
- 1.3 ± .7
(-1.4 ± .7)
10-20
W·kg-1		 710.1 ± 204.8
(14.9 ± 4.1)		 568.3 ± 223.5 *
(12.0 ± 4.5) *		 .033
(.038)		 Moderate
- .9 ± .6
(- .9 ± .7)
20-35
W·kg-1		 416.5 ± 134.1
(8.72 ±2.8)		 400.2 ± 145.6
(8.43 ± 3.0)		 .698
(.7970)		 Unclear
.2 ± .7
(.1 ± .9)
35-55
W·kg-1		 123.0 ± 51.1
(2.58 ± 1.1)		 194.6 ± 52.9 **
(4.09 ± 1.1) **		 .001
(.001)		 Large
- 1.3 ± .5
(- 1.3 ± .5)
>55
W·kg-1		 30.6 ± 40.2
(.6 ± 0.9)		 85.0 ± 44.4 ***
(1.8 ± .9) ***		 .001
(.001)		 Large
- 1.6 ± .6
(- 1.6 ± .6)
HMPD
(>20 W·kg-1)		 571.7 ± 184.7
(12.0 ± 3.8)		 672.9 ± 198.2
(14.2 ± 4.1)		 .105
(.078)		 Moderate
- .7 ± .7
(- .8 ± .7)
*** p<0.001.
** p<0.01;
* Significant difference between forwards and backs, * p<0.05;
In the table, the top values represent absolute values for one full half period (independently of 1st or 2nd half), and the values in brackets correspond to relative time values. ML: metabolic load; MPA: metabolic power average; ED: equivalent distance; DT: distance travelled; HMPD: high metabolic power distance; ES: effect size (Cohen’s d) presented with 90% confidence interval.