## 3 Results
With the exception of the functional reach test, where the slightly better results of the underweight and normal weight are not statistically significant compared to the overweight ones, for the other tests significant differences are reported for at least one of the analyzed pairs, so Hypothesis 2 (H2) is partially confirmed. The very good result of the group of underweight in the one standing balance test and the significant differences resulting from the comparison with the average values of normal and overweight (\(p=0.000\)) in both cases represent a surprise. After a careful analysis of Table 1 we notice that the underweight group consists mostly of women (15 students and only 6 men), the better values of women (previously analyzed in Table 5) generating this spectacular difference. However, this test does not show significant differences between normal and overweight (\(p=0.492\)). The best average results of the stock test belong to normal weight students, but the difference compared to the value of the underweight group is not significant (\(p=1.000\)), but it is significant compared to overweight (\(p=0.006\)). However, no significant differences are reported between the average values of underweight and overweight (\(p=0.326\)). For the flamingo test, the best average results belong to the underweight and then the normal weight group, but with insignificant differences between these groups (\(p=0.689\)). Poor overweight results generate significant differences compared to the average values of the other 2 groups (\(p=0.000\).). Of the 16 men who needed 15 attempts (threshold) to complete the test, none is normal weight; only 1 is underweight, with the other 15 falling into the class of overweight and obese. For the Bass test, there is a big difference between the values of normal weight compared to those of underweight and overweight (\(p=0.040\), respectively \(p=0.000\)), but there is also lack of significance between the average values of underweight and overweight (\(p=0.741\)). The walk and turn field sobriety test demonstrates the problems related to the dynamic balance of the body while walking, for the category of overweight, which have the most errors associated with the test, the most common being related to the difficulty of returning to \(180^{0}\) and exceeding the line marked on the ground. Rarely did mistakes occur in those in the normal weight group, and those in the underweight group followed the respective route without making mistakes. The differences are significant for the comparison between underweight and overweight, respectively between normal and overweight (\(p=0.000\)), and are insignificant between the group of normal and underweight (\(p=0.607\)). The Fukuda test identifies the vestibular problems of the 3 groups, expressed in degrees of rotation on one side. Overweight people have the largest deviations, with average values exceeding the threshold of 300. However, the high average values of this group are due to the extreme scores recorded by some students; of the 9 cases with values \(\geq 900\), 6 are overweight and only 3 normal weight. Normal weight students have the best results in this test, followed by underweight, but the only significant difference is between normal weight and overweight (\(p=0.017\)). The analysis of the associations between BMI values and the results of the balance tests in Table 7 indicates a decrease in performance when BMI values increase and negative correlations for 4 tests, without significance only for the one leg standing test and the stark test. The positive correlations reported in the flamingo, walk and turn and Fukuda tests indicate an increase in the number of falls, errors or degrees, so also an undesirable influence of high BMI values. Although the values of the Spearman coefficient indicate weak and moderate correlations, the fact that they are statistically significant partially confirms the third working hypothesis (H3).