Lifestyle counseling to reduce body weight and cardiometabolic risk factors among truck and bus drivers -a randomized controlled trial by Puhkala J, Kukkonen-Harjula K, Mansikkamäki K, Aittasalo M, Hublin C, Kärmeniemi P, Olkkonen S, Partinen M, Sallinen M, Tokola K, Fogelholm M Our aim was to decrease body weight and cardiometabolic risk factors among overweight truck and bus drivers by structured lifestyle counseling. Our study is one of the few randomized trials to promote health of professional drivers. The study showed clinically meaningful decreases in body weight and cardiometabolic risk factors after 12 months of counseling followed by 12 months of follow-up. Original article Scand J Work Environ Health. 2015;41(1):54-64. doi:10.5271/sjweh.3463 Lifestyle counseling to reduce body weight and cardiometabolic risk factors among truck and bus drivers -a randomized controlled trial Objectives We conducted a randomized trial among overweight long-distance drivers to study the effects of structured lifestyle counseling on body weight and cardiometabolic risk factors.
AffiliationMethods Men with waist circumference >100 cm were randomized into a lifestyle counseling (LIFE, N=55) and a reference (REF, N=58) group. The LIFE group participated in monthly counseling on nutrition, physical activity, and sleep for 12 months aiming at 10% weight loss. After 12 months, the REF group participated in 3-month counseling. Assessments took place at 0, 12, and 24 months. Between-group differences in changes were analyzed by generalized linear modeling. Metabolic risk (Z score) was calculated from components of metabolic syndrome.
ResultsThe mean body weight change after 12 months was -3.4 kg in LIFE (N=47) and 0.7 kg in REF (N=48) [net difference -4.0 kg, 95% confidence interval (95% CI) -1.9--6.2]. Six men in LIFE reduced body weight by ≥10%. Changes in waist circumference were -4.7 cm in LIFE and -0.1 cm in REF (net -4.7 cm, 95% CI -6.6--2.7). Metabolic risk decreased more in the LIFE than REF group (net -1.2 points, 95% CI -0.6--2.0). After 24 months follow-up, there were no between-group differences in changes in body weight (net -0.5 kg, 95% CI -3.8-2.9) or metabolic risk score (net 0.1 points; 95% CI -0.8-1.0) compared to baseline.Conclusions Weight reduction and decreases in cardiometabolic risk factors were clinically meaningful after 12 months of counseling.