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. 2019 May 17;19:157. doi: 10.1186/s12887-019-1519-2

Table 3.

Correlation between the load carried and the number of different disciplines per day

	Backpack		Total load
	load (kg)	load·BW⁻¹	load (kg)	load·BW⁻¹
Correlation coefficient
5th grade
Number of disciplines	0.396	0.281	0.478	0.358
p	< 0.001	< 0.001	< 0.001	< 0.001
N theoretical disciplines	0.523	0.416	0.439	0.352
p	< 0.001	< 0.001	< 0.001	< 0.001
9th grade
Number of disciplines	0.196	0.204	0.266	0.290
p	< 0.001	< 0.001	< 0.001	< 0.001
N theoretical disciplines	0.391	0.348	0.347	0.366
p	< 0.001	< 0.001	< 0.001	< 0.001