Seasonal variation in cordovans´ sperm quality: a 20 years study.

MOLINA RI; MARTINI AC; RAMÍREZ ND; GAGGINO P; TISSERA A; MANGEAUD A

CORDOBA

Jornada; XXIII Jornada de Investigación de la Facultad de Ciencias Médicas; 2022

It is well known that weather influences mammalian testicular function. Regarding humans, studies show conflictive results, and causal factors are poorly understood. The aim of this retrospective observational study was to assess the possible seasonal variation in cordovans seminal quality, evaluating semen samples from patients attending an andrology center (Laboratorio de Andrología y Reproducción –LAR-) during the last 20 years (2011-2020). In addition, to analyze the possible associations between seminal parameters and meteorological variables. After signing written informed consent, all the patients attending LAR were recruited. Aplication of exclusion criteria left 17584 patients for subsequent statistical analysis. Depending on calendar date of evaluation, semen samples were classified in four groups (spring, summer, autumn and winter). Meteorological parameters evaluated were seasonal mean temperature (T), thermal sensation (TS), humidity (H) and atmospheric pressure (P).Seasonal variations were analyzed by ANOVA and Chi square test, and the associations between seminal and meteorological parameters were evaluated by Pearson´s correlation test and multiple lineal regression models.Winter showed higher mean values (vs summer; p