Table 2.

Number of SSs used by swimmers of both sexes and at different competitive levels according to AIS categories [21].

AIS Categories		Sex	Total	International	National	p-Value Level	p-Value Sex	p-Value Level-Sex
Total SS		Females	5.5 ± 3.5	6.4 ± 4.1	4.5 ± 2.4	0.091	0.841	0.600
		Males	5.4 ± 4.3	6.1 ± 4.8	5.1 ± 4.1
		Total	5.4 ± 4.0	6.3 ± 4.4	4.9 ±3.6
Group A	Sport foods	Females	1.4 ± 1.2	1.5 ± 1.4	1.3 ± 1.0	0.793	0.769	0.492
		Males	1.4 ± 1.2	1.3 ± 1.1	1.4 ± 1.2
		Total	1.4 ± 1.2	1.4 ± 1.3	1.4 ± 1.1
	Medical supplements	Females	1.0 ± 0.9	1.1 ± 0.89	1.0 ± 0.9 λ	0.012 *	0.210	0.049 *
		Males	0.7 ± 0.8	1.2 ± 1.0 #	0.4 ± 0.6
		Total	0.8 ± 0.9	1.2 ± 0.9 #	0.6 ± 0.8
	Sport performance	Females	1.0 ± 1.1	1.1 ± 1.2	0.8 ± 1.0 λ	0.979	0.160	0.190
		Males	1.4 ± 1.2	1.2 ± 1.0	1.5 ± 1.3
		Total	1.2 ± 1.2	1.2 ± 1.1	1.3 ± 1.3
	Total Group A	Females	3.4 ± 2.3	3.8 ± 2.6	3.1 ± 1.8	0.979	0.314	0.762
		Males	3.4 ± 2.5	3.7 ± 2.7	3.3 ± 2.4
		Total	3.4 ± 2.4	3.7 ± 2.6	3.2 ± 2.2
Group B		Females	0.9 ± 0.9	1.1 ± 0.9	0.6 ± 0.9	0.132	0.713	0.302
		Males	0.8 ± 0.9	0.8 ± 0.9	0.7 ± 0.9
		Total	0.8 ± 0.9	1.0 ± 0.9	0.7 ± 0.9
Group C		Females	1.2 ± 1.3	1.5 ± 1.4	0.8 ± 1.1	0.079	0.615	0.798
		Males	1.2 ± 1.9	1.6 ± 2.2	1.1 ± 1.8
		Total	1.2 ± 1.7	1.6 ± 2.2	1.0 ± 1.6

Data expressed mean ± standard deviation (SD). *: Significant difference for a determined factor; ^#: Significant difference between international and national of a same sex; λ Significant difference between males and females of a same competitive level; Statistical significance at p < 0.05.