The purpose of this study was to compare the eff ect of exercise sequence with proteinsupplementation on serum follistatin and myostatin ratio, body composition, anaerobic power,strength, and muscle cross-section of young bodybuilders. 48 of young bodybuilders wererandomly divided into four equal groups: a) resistance-endurance + supplement (n=12) b)endurance-resistance + supplement (n=12) C) Resistance-endurance (n=12) d) Endurance-resistance (n=12) were divided. The device (body composition) was used to evaluate the bodycomposition and their fasting blood samples were taken by a specialist for relevant examinations.After grouping, at the beginning and end of the study, in order to determine anaerobic power(ergojump test) and for strength (squat, dead lift and chest press) were taken and recorded. Thesubjects included endurance training consisting of 30 to 38 minutes of aerobic exercise on atreadmill, which started with 65 to 70% of maximum heart rate and will reach 80 to 85% ofmaximum heart rate in the fi nal week. Strength training included forward thigh, back thigh, chestpress, lap stretching, back arm pull, and forearm movements. Each movement started in threesets with 65 to 70% of the maximum strength of the person and 7 to 12 repetitions and 5% wasadded to the load per week. How to take his protein supplement was that the subjects receivedsupplemental groups of 0.5 grams per kilogram of body weight of protein daily. Muscle Techprotein was prepared. The other two groups received the same amount of carbohydrates, whichwas equivalent in energy (130 kcal). After the exercises, the test (body composition) as well asblood sampling was performed by a specialist and the necessary factors were measured in thelaboratory. The results of repeated measures analysis of variance test showed that musclestrength, anaerobic power, muscle mass, follistatin to myostatin ratio and muscle cross-section insupplement groups signifi cantly increased compared to control groups and fat percentagedecreased signifi cantly. According to the results of the study, it can be stated that taking protein supplements along with simultaneous exercise has a positive eff ect on anabolic status and musclegrowth and also improves athletic performance.

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