Prevalence of food supplements usage for volleyball and handball players‘ and their physical fitness

Object of this study: Prevalence of food supplements usage for volleyball and handball players’ and their physical fitness. Problem of this study: Prevalence of food supplements usage and their physical fitness (particularly for volleyball and handball players) is a low-examined theoretically and empirically. Aim: Identify the prevalence of food supplements usage for volleyball and handball players‘ and their physical fitness. Tasks: 1) Identify and compare the food supplements usage features for volleyball and handball players. 2) Identify and compare the influence of food supplements for volleyball and handball players’ physical fitness. Hypothesis: The influence of food supplements for athletes’ organism is related with better physical fitness. Findings: 1. Participants of this study mainly used protein and carbohydrates’ mixtures and the least among the subjects were used the HMB supplements. Volleyball players was the most likely to use mixtures’ of protein and carbohydrates, handball players – L-carnitine, amino acids, protein and carbohydrate mixtures. As can be seen, handball and volleyball players select quite different food supplements to use. 2. The emergency power, when the long jump exercise was used, after 6 months from the beginning of this study was better for those volleyball players‘ who used amino acids and for handball players’ – who used supplements of creatine. When the jump up exercise was used, better results (after 6 months from the beginning of this study) were for those volleyball players who used supplements of creatine and for handball players’ – who used supplements of amino acids and L-carnitine. The hand and leg muscle strength results (when barbell pressing exercise was used) were better for those volleyball players’ who used supplements of protein and carbohydrate mixtures and for handball players – supplements of protein and carbohydrate mixtures, creatine and L – carnitine. When it was used the other exercise – squat with barbell – better results were for those volleyball players who used supplements of HMB and for handball players – who used supplements of protein and carbohydrate mixtures and creatine. Speed results (when 10x5 running in shuttle was used) were better for those volleyball players, taking supplements of creatine and for handball players – taking supplements of creatine and amino acids