Analysis of lumbar lordosis on selected balance parameters in men

Introduction. Scientific research indicates the impact of increased lumbar lordosis on selected parameters of static foot load and changes in balance reactions in different age groups. According to the authors, pelvic displacement towards nutation directly influences the increase in lumbar lordosis, thereby affecting the previously mentioned parameters. Aim. The aim of the study was to analyze selected balance parameters in a group of men based on the relationship with their lumbar lordosis depth. Materials and Methods. The study was conducted from January to October 2023 at the Collegium Medicum of the Jan Kochanowski University in Kielce. The study group consisted of students from the Collegium Medicum, aged 18‑26 years. A total of 81 men were examined. The study was carried out in a static form using the Diers Posture Lab system. The parameters included in the statistical analysis were: “Lordosis angle,” “Pelvic inclination,” “Lateral movement (max.) CoP,” “Total lateral movement CoP,” “COP area,” “Total front/back movement CoP.” The analysis also considered Harzmann parameters: “Lateral deviation VP‑DM (rms),” “Surface rotation (rms),” “Pelvic obliquity,” “Pelvic twist,” “Torso deviation from vertical VP‑DM,” as well as parameters determining foot load: “Rear force distribution [%],” “Front force distribution [%],” “Left side force distribution [%],” “Right side force distribution [%],” “Maximum left side pressure [N],” “Maximum right side pressure [N],” “Left foot contact area [cm2],” “Right foot contact area [cm2]” in a group of young adults (students of medical and health sciences). Statistical analysis was performed using Statistica Stat Soft 21. Normality tests (Shapiro‑Wilk) and correlation tests using Spearman’s test were conducted. Results. No statistically significant correlation was found between the lordosis angle and balance reactions, as well as pelvic inclination in the group of young adult men. Conclusions. Increased lumbar lordosis in young adult men does not directly affect the examined parameters of balance reactions.