Table 4.

The use of food supplements by the runners and the reference subjects, in %.

Food supplement	Runners (%)	Reference group (%)	Cramer’s V	p
Multivitamin tablets	29.1	14.6	0.167	0.000
Vitamin C	14.6	9.2	0.123	0.000
Magnesium	24.9	8.1	0.201	0.000
Omega 3 fats	13.4	6.2	0.109	0.000
Iron	10.1	4.8	0.124	0.000
Calcium	11.8	7.3	0.089	0.002
Group B vitamins	5.8	3.8	0.078	0.034