This review summarizes results from studies investigating the physical characteristics, daily energy expenditures, diets, and effects of nutritional supplements to the habitual diets of soecer players. The results show that players fall within a wide range of stature and body weight, and they are classified as mesomorphs. The body fat of male players is about 10% of body weight, whereas the average for females is about 21%. Energy expenditure for males is about 4,000 kcal on training days and 3,800 keal on match day. while energy intake reported in other studies is on the order of 3,700 kcal. Carbohydrate (CHO), fat, and protein intakes are about 53,30, and 14% of energy intake, respectively, the remaining being from alcohol intake. There are indications that CHO supplements might be beneficial during soccer performance. However, more research is needed to clarity the importance of branched-chain amino acid and creatine supplementation in soccer.
JesÚs Rico-Sanz is with the Departament de Bioquimica i Biologia Molecular, Facultat de Ciencies, Universital Autonoma de Barcelona. 08193 Bellaterra, Barcelona, Spain.