The purpose of the study was to investigate the effect of the four-week two strength training program on the skin fold thickness and body fat percentage (BFP) characteristics according to the maximal strength and strength endurance principles. Sixteen male volunteers participated in the study. The subjects were divided into two groups as the maximal strength group (MSG, n=8, Age=24.00±3.78 year, Height=172.25±2.19 cm, Weight=75.13±6.60 kg) and the strength endurance group (SEG, n=8, Age=25.13±3.09 year, Height=173.38±2.62 cm, Weight=77.00±7.54 kg). 4 weeks training program was applied to maximal strength group according to maximal strength training principles and applied to strength endurance group according to strength endurance training principles. In both groups, body weight, body mass index (BMI), skin fold thickness (triceps, biceps, pectoral, subscapula, abdominal, suprailiac, femur anterior and posterior, calf) and body fat percentage measurements were taken one day before and after the 4 week period. Between pre-test and post-test of SEG group, significant change was showed in triceps, biceps, pectoral, subscapula, abdominal, suprailiac, femur anterior and posterior skin fold thickness measurements and VFM parameters (p < 0.05). Significant change was determined in pre-test and post-test of MSG group in triceps, pectoral, subscapula, abdominal, suprailiac, femur anterior skin fold thickness measurements and VFM parameters (p < 0.05). When the pre-post test differences of the groups were compared, no difference was found between MSG and SEG groups (p > 0.05). As a result, it can be said that 4-week maximal strength training and strength endurance training have positive effects on the skin fold thickness and body fat percentage parameters. Article visualizations