NCT00893646

Effects of Weight Reduction on Sleep and Alertness in Long-distance Truck and Bus Drivers

Effects of Weight Reduction and Lifestyle Changes on Sleep, Alertness and Cardiometabolic Risk Factors in Overweight Professional Long-distance Drivers

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 113 (actual)
• Sponsor: UKK Institute · Academic / Other
• Sex: Male
• Age: 30 Years – 62 Years
• Healthy volunteers: Accepted

Summary

The study is a year-long health-behaviour intervention in obese, male truck-drivers to lose weight moderately by 10%, using monthly individual counseling. The investigators hypothesize that lifestyle modification (increased physical activity, changes in eating habits, and improved schedule for sleep) through weight loss improves daytime alertness and quality of sleep, reduces daytime sleepiness, and improves cardiovascular risk factors and health-related fitness.

Detailed description

Daytime sleepiness, i.e., being fatigued at work is an important risk factor for traffic accidents involving commercial vehicles. Sleep-related disturbances and daytime fatigue may be partly related to obesity, which is common among truck drivers. This study is a randomised 12-month health-behaviour intervention in obese, male truck-drivers. We hypothesize that lifestyle modification (increased physical activity; decreased energy intake; and improved schedule for sleep), aimed to reduce weight moderately by 10%, improves daytime alertness and quality of sleep, reduces daytime sleepiness, and improves cardiometabolic health and health-related fitness. The primary aim is weight loss. We will recruit 140 participants aged 30-62 years and with abdominal obesity. The participants are randomised into an intervention (INT) and control (CON) group, for 12 months. The INT group gets individual lifestyle counseling monthly. After 12 months, the CON group receives weight-loss counseling for 3 months. Assessments (psychological vigilance test, sleep duration, dietary intake, physical activity, metabolic syndrome, health-related fitness) take place at months 0, 12 and 24. We expect to develop counseling strategies (leading to weight loss through changes in lifestyle) that can be used to improve sleep, alertness and cardiometabolic health in occupational health care.

Conditions

• Abdominal Obesity

Interventions

Type	Name	Description
BEHAVIORAL	weight loss counseling	individual monthly lifestyle counseling, face-to-face (6 times, each 45 min) and by telephone (7 times, each 30 min), on how to decrease energy intake and change eating habits to improve quality of dietary fat and carbohydrate, how to increase daily walking steps; and how to improve sleep quality (sleep hygienic tips)

Timeline

• Start date: 2009-05-01
• Primary completion: 2012-06-01
• Completion: 2015-01-01
• First posted: 2009-05-06
• Last updated: 2015-06-01

Locations

3 sites across 1 country: Finland