Table 3.

Measures of contest costs for males and females at 8, 10 and 13 weeks of age

	8 weeks		10 weeks		13 weeks		p value
	M	F	M	F	M	F	Sex	Age	S×A
Contest duration (s)	267	242	375	335	311	184	0.004	0.003	0.04
Δ Lactate (mmol/L)	4.65	4.00	5.60	4.91	4.65	2.70	0.009	0.02	0.18
Δ Glucose (mmol/L)	1.20	1.14	1.21	1.20	1.14	1.09	0.12	0.03	0.64
Skin lesions front (n)	24	26	25	18	30	17	0.02	0.58	0.03
Skin lesions total (n)	37	43	43	33	47	32	0.17	0.92	0.05

Values are LSmeans. For blood lactate and blood glucose, the relative difference between the pre and post contest value was used for analysis