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Introduction: balance is very important in order to perform daily physical activities as standing or walking. Both physical activity and body composition are some of the most important adjustable intrinsic factors influencing balance., Objective: to analyze the influence of physical activity level and different body variables on the postural control of male adults., Methods: observational, cross-sectional study with 63 men between 25 and 60 years of age, with body mass index (BMI) between 18 and 35 kg/ m2. Anthropometric variables (e.g., weight, BMI, waist circumference), body composition and its distribution (e.g., percentage of total fat mass: TFM%, of the legs: LFM%, and android: AFM%), physical activity (PAL) and postural control (e.g., SOM ratio) were measured. Multiple linear regression was used to evaluate the relationship of all variables with the SOM ratio., Results: the results of this study show a correlation between TFM% (r = -0.384, p = 0.002), AFM% (r = -0.421, p = 0.001) and PAL (r = 0.291, p = 0.021) with the SOM ratio. In addition, individuals classified as obese (TFM% ≥ 28) scored worse on SOM ratio than non-obese individuals (97.33 ± 2.52 vs 96.37 ± 1.54, p = 0.013), and individuals classified as active (PAL ≥ 1.4) scored higher on SOM ratio than sedentary individuals (97.13 ± 2.33 vs 96.18 ± 1.38; p = 0.035)., Conclusions: the fat mass and PAL seem to influence proprioceptively on postural control, being the waist circumference the variable that predicts SOM ratio the most.