Paweł Dolibog

Background: Posture ergonomics is becoming an increasingly discussed issue in the literature. The effect of daily habits and attitudes, especially overloading ones, is an important topic of currently conducted research. Performing simple tasks correctly is an important aspect. The following paper deals with the topic of women's handbag and the effect of carrying it on various stabilometric parameters.Aim of the Study: The aim of the study was to check whether the examined women who carry a one-shoulder bag are affected by posture and the occurrence of pain.Material and methods: Forty-two womens aged 20-25 years were enrolled in the study and were assigned to two equal comparison groups: group A – ladies carrying a purse on the right arm, group B – ladies carrying a purse on the left arm. The following tests were performed: evaluation of postural stability, including total sway path (SP) using a stabilometric platform, the degree of spinal curvature was assessed with a scoliometer, the degree of pelvic tilt was measured with an electronic inclinometer, and the extent of lateral head flexion was checked with an electronic goniometer. Back pain intensity was assessed using the VAS scale.Results: There appeared to be a statistically significant difference in the transfer of the center of gravity to the right side in group A, and to the left side in group B. As for the stabilometric parameters, only the SP [mm] parameter achieved statistical significance. The highest correlations were observed in the group A, between pain complaints and the motion range of head flexion to the right (r= -0.62). In both groups, there were no significant statistical differences within the groups with and without declared pain (p>0.05). However, in the intergroup comparison for patients without a bag (p=0.01), with their own bag (p=0.04) and with a 3kg bag (p=0.02), there were statistically significant differencesConclusions: A bag worn on one shoulder can provoke the occurrence of back pain. The stabilometric results indicate abnormalities in free standing. Education about pain prevention and maintaining proper posture is important.

Introduction: An important parameter characterizing the ability of erythrocytes to deform depending on the blood flow conditions is the Elongation Index (EI), and it is a parameter defined by the shape of the erythrocyte obtained as a diffraction pattern of erythrocytes at different values of shear stresses. Material and methods: EI measurements at different shear stress were performed by Laser-assisted Optical Rotational Cell Analyzer (LORRCA) for erythrocytes derived from Tissue Bank in Katowice. Measurements were performed immediately after receiving them from Tissue Bank and after 2, 9, and 28 days of storage of samples at the temperature of 4°C in solution with the anticoagulant. Results: An increase in the erythrocytes Elongation Index in the first 9 days of storing samples at low temperatures was observed in the entire range of applied shear stresses. This indicates an increase in the elasticity of erythrocytes during short-term storage at 4°C. In turn, on the 28th day of erythrocyte storage, a significant decrease in the Elongation Index for shear stresses greater than 1 Pa was observed, which indicates the stiffening of the erythrocyte membrane structure, reducing their elasticity. The relative decrease in the Elongation Index of erythrocytes stored for 28 days compared to erythrocytes measured at the beginning was similar and slightly greater than 30% for shear stresses greater than 3 Pa. For shear stresses lower than 3 Pa, the relative change in elongation index was smaller than for shear stresses greater than 3 Pa and increased with the increase in shear stress. Conclusions: The elongation index of erythrocytes stored in the anticoagulant solution at 4°C, initially increases in the entire range of applied shear stresses in the first few days from the moment of blood collection and preparation at the Tissue Bank, and then decreases, but on the ninth day of storage the elongation index is still higher than for blood immediately after collection.