2.5. Supplementation
gastrointestinal disturbances
POLAND
Both groups completed a 90-day (7 times per week) supplementation program. The experimental population was taking 6 g of lyophilized black chokeberry extract (a dose within a margin of dietary safety). The control group received the same number of identical-looking rice-flavored gelatin capsules as the supplemented group. The lyophilized black chokeberry extract and placebo supplements were both produced by MLB (Biotrade, Poznan, Poland), and placed in identical plastic boxes marked in code indicating the type of preparation and recommended dose.The margin of dietary safety was determined in pilot studies involving 45 young physically active men (mean age = 19.96 ± 0.56 years), performed before the start of the current study. In the pilots, no gastrointestinal disturbances associated with the dose used herein were observed. 