2.3. Intervention Protocol
POLAND
The participants were divided into the CLA group and the placebo group. During the intervention period (three months), both groups received six capsules per day, each containing 0.5 g of substrate. Capsules in the CLA group contained 80% CLA (50% of cis-9, trans-11 and 50% of trans-10, cis-12 isomers), while capsules for the placebo group contained sunflower oil. Capsules for the CLA and placebo groups looked identical and were manufactured by the Olimp Laboratories company (Pustynia, Poland). The oils did not differ in energy value. A comparison of fatty acids composition between CLA and sunflower oils is presented in 