Table 1.

General characteristics of 53 twin pairs.

	Monozygotic (n =56)	Dizygotic (n =50)	p values
Age (years)	51±6	53±6	0.066
Weight (kg)	64.12±8.56	63.44±7.91	0.370
Height (cm)	156.43±6.84	157.52±5.61	0.369
BMI (kg/m)	26.30±3.89	25.66±3.65	0.404
Body fat (%)	32.99±5.89	32.96±6.72	0.979
Waist (cm)	90.56±8.76	90.08±10.66	0.805
Hip (cm)	103.68±7.15	102.39±8.10	0.379
WHR	1.15±0.06	1.14±0.09	0.742
Timing of food intake
Breakfast	08:49±00:54	08:36±00:52	0.209
Lunch	14:31±00:33	14:32±00:30	0.904
Dinner	21:36±00:40	21:22±00:41	0.072
Midpoint of intake	15:16±00:32	15:23±00:40	0.335
Sleep
Wake-time (hh:mm)	07:33±01:09	07:38±01:00	0.684
Bed-time (hh:mm)	24:18±00:56	24:28±00:59	0.288
Chronotype score	55.21±8.67	56.44±7.56	0.442

Data are represented as means ± SD.

Abbreviations: BMI, body mass index, WHR, waist-to-hip ratio