Table 2.

Daytime and nighttime leptin and estradiol concentrations

Hormone concentrations	Day (08:00–20:00 h)	Night (20:00–08:00 h)	Significance
Leptin, ng/ml
Subject 1	9.08  ± 0.16	↑ 12.60  ± 0.22	P < 10−6
Subject 2	8.76  ± 0.16	↑  9.93  ± 0.24	P < 10−4
Subject 3	2.72  ± 0.04	↑  3.02  ± 0.07	P < 10−3
Subject 4	8.66  ± 0.15	↑ 12.37  ± 0.22	P < 10−6
Subject 5	8.53  ± 0.22	↑  14.5  ± 0.32	P < 10−6
Subject 6	4.71  ± 1.0	↑  7.90  ± 0.15	P < 10−6
Estradiol, pg/mL
Subject 1	13.9  ± 0.5	↓  11.3  ± 0.6	P < 10−3
Subject 2	24.7  ± 0.9	↓  16.8  ± 0.4	P < 10−6
Subject 3	26.7  ± 0.8	↑  31.2  ± 1.2	P < 2 × 10−3
Subject 4	31.6  ± 0.8	31.5  ± 1.0	NS
Subject 5	35.9  ± 0.6	↑  39.3  ± 0.6	P < 10−3
Subject 6	57.9  ± 5.4	46.7  ± 5.4	NS

↑, significantly increased; ↓, significantly decreased; NS, not significant.