. 2021 May 27;11:11116. doi: 10.1038/s41598-021-90630-8

Table 2.

Testosterone, estriadol and prostaglandin concentrations depending on the season and age of the male subjects (mean ± SD).

Hormone profiles	Age groups	Winter season				Summer season
Hormone profiles	Age groups	Regular mean ± SD	LSD young/old	Irregular mean ± SD	LSD young/old	Regular mean ± SD	LSD young/old	Irregular ean ± SD	LSD young/old
Testosterone ng/mL)	Young	8.98^A ± 0.71	*	8.02^B ± 0.99	d	8.98^A ± 0.99		8.1^B ± 0.93	*
Testosterone ng/mL)	Old	9.64^A ± 0.98	*	8.21^B ± 0.78	f	8.89^A ± 1.05		7.52^B ± 1.01	*
Estradiol pg/mL)	Young	301.6^a ± 10.33	*	317.3^a ± 14.65	a	351.1^a ± 17.08	*	374.8^a ± 17.62	*
Estradiol pg/mL)	Old	322.4^a ± 15.15	*	350.7^b ± 16.78	b	336.5^a ± 15.41	*	361.4^a ± 14.9	*
Prostaglandin E₂ pg/mL)	Young	21.0^a ± 0.8		19.79^b ± 0.79		24.8^a ± 1.07		24.24^a ± 1.1
Prostaglandin E₂ pg/mL)	Old	22.0^a ± 0.99		20.2^b ± 0.83		23.82^a ± 0.93		23.06^a ± 0.91

Explanation: different letters in the same lines differ significantly; a, b (P < 0.05), A, B (P < 0.01); *P < 0.05; **P < 0.01; LSD least significant difference.