TABLE 1.
FROM:
Short Sleep Duration is Associated with Reduced Leptin Levels and Increased Adiposity: Results from the Québec Family Study
Jean-Philippe Chaput, Jean-Pierre Després, Claude Bouchard and Angelo Tremblay
BACK TO ARTICLETable 1.. Descriptive characteristics of men and women in the study
| Characteristic | Men (n = 323) | Women (n = 417) |
|---|---|---|
| Age (years) | 41.5  13.7 | 41.2 12.9 |
| Weight (kg) | 82.7 19.7 | 71.9 22.4*
|
| BMI (kg/m2) | 27.5 6.5 | 27.9 8.8 |
| Body fat mass (kg) | 20.6 13.3 | 24.5 15.3*
|
| Body fat (%) | 23.4 9.1 | 32.3 10.5*
|
| Waist circumference (cm) | 94.4 16.6 | 84.7 19.0*
|
| Waist-to-hip ratio | 0.93 0.08 | 0.79 0.08†
|
| Skinfold thickness (mm) | ||
| Extremities | ||
| Biceps | 7.3 5.7 | 16.3 11.9†
|
| Triceps | 12.4 7.1 | 26.1 12.2†
|
| Calf | 10.8 6.5 | 24.3 12.4†
|
| Sum of 3 extremity skinfolds | 30.4 17.8 | 66.5 34.7†
|
| Trunk | ||
| Subscapular | 21.9 13.6 | 25.2 14.8*
|
| Suprailiac | 21.3 10.5 | 23.7 12.4*
|
| Abdomen | 25.7 14.4 | 34.3 17.6†
|
| Sum of 3 trunk skinfolds | 68.7 36.0 | 82.9 42.1†
|
| Sum of 6 skinfolds | 98.6 51.8 | 148.8 73.9†
|
| Total sleep duration (hours) | 7.6 1.0 | 7.8 1.1 |
| Physical activity level (min)‡ | 28.1 53.7 | 15.2 27.2†
|
| Leptin concentrations (ng/mL) | 10.8 9.6 | 28.5 19.9†
|
Values are mean standard deviation.
* Significantly different from men (p < 0.01).
† Significantly different from men (p < 0.0001).
‡ Mean time spent in vigorous physical activity participation estimated as the number of periods graded 8 and 9 over the 3 days.
