Weight Outlooks by Restriction of Diet and Sleep

Weight Outlooks by Restriction of Diet and Sleep

The purpose of this study is to examine whether chronic moderate sleep restriction effects the amount of body fat and lean mass loss, and calorie expenditure, in individuals who are participating in a dietary weight loss program.

Participants will be randomly assigned to an 8-week program of either restricted diet alone, or restricted diet with restricted sleep for 5 days a week. The total expected duration of participation is approximately 3 months.

Inclusion Criteria:

• age between 35-55 years,
• BMI between 30-35 kg/meters squared,
• total sleep time between 6.5-8 hours

Exclusion Criteria:

• work requiring changing schedule,
• use of sleep aids or sleep medication