ArticleRevista da Associacao Medica Brasileira (1992)2026
Associations of age and sexual abstinence duration with semen parameters in normozoospermic men.
Article in Revista da Associacao Medica Brasileira (1992), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveThe aim of this study was to evaluate the effects of age and duration of sexual abstinence on semen parameters in normozoospermic men and to explore their relative contributions within physiologically normal ranges.
methodsThis retrospective study included 412 normozoospermic men defined according to World Health Organization 2010 criteria. Semen volume, sperm concentration, and motility parameters were analyzed. Participants were stratified by age and abstinence duration. Correlation analyses and multivariate linear regression models were performed.
resultsIncreasing age was modestly associated with lower total and progressive motility and a higher proportion of immotile sperm. Longer sexual abstinence duration was associated with higher sperm concentration. The proportion of explained variance was modest but consistent across analyses.
conclusionThese findings suggest that age and sexual abstinence duration are associated with selected semen parameters in normozoospermic men. The observed age-related differences in the associations with sexual abstinence and semen parameters warrant further investigation in larger, prospective studies before age-specific abstinence recommendations can be considered.
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