Table 2.

Demographic data of the main study.

Characteristic	Nx4 group (n = 23)	Placebo group (n = 22)	P -value for difference between groups
Age (years) mean ± SD	4.1 ± 2.2	4.4 ± 2.2	0.68
BCS mean ± SD	4.5 ± 1.1	4.4 ± 1.2	0.64
Gender
Male	14	12	n.a.
Female	9	10	n.a.
Dogs per musher
Musher A	13	15	n.a.
Musher B	5	2	n.a.
Musher C	5	5	n.a.
Dogs per team
Team 1	4	4	n.a.
Team 2	5	5	n.a.
Team 3	5	2	n.a.
Team 4	4	6	n.a.
Team 5	5	5	n.a.
Plasma cortisol (ng/ml) mean ± SD	29.1 ± 11.6	29.9 ± 11.6	0.81
Plasma gastrin (pg/ml) mean ± SD	18.6 ± 5.0	17.2 ± 4.8	0.33
Plasma Ln GRP (ng/ml) mean ± SD	0.45 ± 0.54	0.26 ± 0.22	0.11
Plasma Ln CK (U/L) mean ± SD	4.1 ± 0.55	4.1 ± 0.68	0.94
Plasma lactate (mmol/l) mean ± SD	1.4 ± 0.46	1.4 ± 0.56	0.99
Leucocytes (G/L) mean ± SD	17.5 ± 1.3	17.0 ± 1.8	0.44
Hemoglobin (G/L) mean ± SD	9.7 ± 2.5	9.1 ± 2.3	0.26

Ln, logarithmic values; SD, standard deviation.