Lifestyle related changes with partially hydrolyzed guar gum dietary fiber in healthy athlete individuals – A randomized, double-blind, crossover, placebo-controlled gut microbiome clinical study

•Daily consumption of PHGG improves gastrointestinal health of healthy athletes.•PHGG intake results in diarrhea reduction and improves and improves lifestyle quality.•PHGG fiber diet is critical for microbiota of subjects with exercise rich lifestyle.•PHGG lowers abundance of harmful bacteria and increases energy recovery in athletes.