Circadian Levels of Serum Melatonin and Cortisol in relation to Changes in Mood, Sleep, and Neurocognitive Performance, Spanning a Year of Residence in Antarctica

Table 3

Clinical profile of subjects on arrival, during summer, and during winter.

Age; (yrs)	Subjects; (n)	Body; Weight (kg)	BMI; (kg/m^2)	Mean systolic BP (mmHg)			Mean diastolic BP (mmHg)
Mean ± standard deviation
				Arrival	Summer	Winter	Arrival	Summer	Winter
20–29	5 (25%)	65.4 ± 21.57	23.18 ± 6.82	123.0 ± 20.85	117.46 ± 12.83	117.46 ± 17.04	77.6 ± 8.29	77.2 ± 5.22	73.73 ± 9.91
30–39	4 (20%)	69 ± 1.33	24.63 ± 1.25	128.0 ± 5.42	121.83 ± 5.21	119.83 ± 9.20	82.5 ± 5.42	79.83 ± 6.63	76.5 ± 6.03
40–49	8 (40%)	76.13 ± 11.43	27.74 ± 4.30	93.25 ± 6.7	130.66 ± 12.58	126.91 ± 12.18	76.13 ± 11.43	83 ± 5.74	78.75 ± 7.86
>50	3 (15%)	83 ± 15.39	28.69 ± 2.19	96.0 ± 12.16	138 ± 16.21	131.33 ± 16.18	83 ± 15.39	88.22 ± 7.90	82 ± 9.59