Bricia López Plaza, Laura Mª Bermejo López, Pilar Andrés Parra
INTRODUCTION: Conjugated linoleic acids (CLAs) have shown beneficial effects in weight control therapy however this relation is not clear.
OBJETIVE: The aim of the study was to examine the effects and safety of 3g of a 1:1 mix of c9-t11 and t10-c12 on weight control and body composition in healthy overweight individuals.
METHODS: A prospective, placebo-controlled, randomised double-blind, parallel clinical trial lasting 24 weeks was carried out in 38 volunteers (29w, 9m) aged 30-55 years and BMI ¡Ý27-<30 kg/m2 who consumed 200 ml/day of skimmed milk with 3g of CLAs or 3g olive oil (placebo). Anthropometric, biochemical and dual x-ray absorptiometry (DXA) tests were measured. Diet and physical activity were assessed.
RESULTS: Subjects maintained their habitual dietary and exercise patterns over the study. Only CLA group showed a significant decrease in weight (74.43¡À10.45 vs. 73.54¡À11.66kg, p=0.029) and waist circumference (91.45¡À10.33 vs. 90.65¡À9.84cm, p=0.012) between baseline and end of the study. BMI and waist height ratio decreased (28.44¡À1.08 vs. 27.81¡À1.43kg/m2, p=0.030 and 0.57¡À0.05 vs. 0.56¡À0.04 p=0.013 respectively) in CLA group at the end. CLA group experienced a reduction in total fat mass after 24 weeks (38.62¡À5.02 vs. 36.65¡À5.64%, p=0.035). No decrease was observed in Control group. HOMA index have no changes.
CONCLUSIONS: The consumption of skimmed milk enriched with 3g of a 1:1 mixture of c9-t11 and t10-c12 for 24 weeks led to a decrease in body weight and total fat mass in healthy, overweight subjects who maintained habitual diets and exercise patterns. No adverse effects were observed. Registered under ClinicalTrials.gov Identifier No. NCT01503047.
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