Relationship between lower extremity strength asymmetry and linear multidimensional running in female tennis players.

Background: Tennis requires movement abilities in changing playing situations. This article investigates the relationship between lower extremity strength asymmetry ratio and linear and multidimensional running performances in female tennis players. Methods: A total of 56 female tennis players, with a mean age of 15.44 ± 0.50 years, participated in the study-the research design involved three sessions at 48-hour intervals. In the first session, athletes performed dominant and non-dominant countermovement jump (CMJ) and board jump (BJ) tests. The second (sec) session included 10-meter (-m) and 30-m linear running performance tests, while the final session assessed multidimensional running performance with a change of direction (COD) test. The relationship between CMJ and BJ asymmetry ratios and linear and multidimensional running performances was analysed using the Pearson correlation coefficient. Bilateral asymmetry rates in linear and multidimensional running performance were determined through linear regression analysis. Results: The dominant CMJ recorded 17.56 ± 3.47 cm, while BJ was 130.23 ± 21.76 cm, and the non-dominant CMJ measured 16.79 ± 4.51 cm with a BJ of 147.52 ± 30.97 cm. The athletes had a CMJ asymmetry rate of 12.67 ± 11.29% and a BJ asymmetry rate of 7.19 ± 5.28%. A relationship was seen between the CMJ asymmetry rate and 30-m running performance (r = 0.368, p < 0.05). There was no correlation between BJ asymmetry rate and 10-m running performance. Significant correlations were found between 30-m (r = 0.364) and COD (r = 0.529) running performances (p < 0.05). Conclusions: It can be said that the CMJ asymmetry ratio may negatively affect 30-m and the BJ asymmetry ratio may negatively affect 30-m and COD performance.

Investigating knowledge levels of university students about infertility.

OBJECTIVE: The aim of this study was to determine the knowledge levels of university students about infertility and investigate the differences in knowledge levels according to sociodemographic variables and some lifestyle factors. MATERIAL AND METHODS: The sample of the study consisted of 9693 undergraduate students (5002 females, 4691 males) from 12 regions. Regions were determined according to Statistical Region Units Classification-1 criteria. Infertility Knowledge Test (IKT) was used as a data collection tool. RESULTS: It was found that university students' IKT scores significantly differed according to gender (p<0.01); age (p<0.05); body mass index (p<0.05); reproductive health education status (p<0.001), presence of infertile individuals around (p<0.001); having sexual intercourse (p<0.001); smoking (p<0.001) and alcohol consumption frequency (p<0.05). CONCLUSION: University students' lack of knowledge about family planning, effects of age and sexual intercourse timing on infertility was remarkable. However, it was determined that the knowledge level of infertility risk factors related to substance use and body mass index was high. It is believed that increasing the level of knowledge about infertility among individuals will positively effect their awareness of risk factors and facilitate their search for timely medical assistance. Sexual health education can be effective in increasing university students' knowledge of infertility.