Objective To analyze the current status of physical activity level and its influencing factors in parturients with advanced paternal age at 6 months postpartum, and to explore the correlation between physical activity level and the incidence of overweight/obesity.

Methods A total of 399 parturients with advanced paternal age were included as study subjects. Surveys were conducted using the International Physical Activity Questionnaire-Long Form, the Edinburgh Postnatal Depression Scale, the Pittsburgh Sleep Quality Index, and the Family Support Rating Scale. Univariate analysis and binary Logistic regression analysis were used to investigate the influencing factors of physical activity level in parturients with advanced paternal age at 6 months postpartum. Spearman correlation analysis was used to explore the correlation between physical activity level and the incidence of overweight/obesity.

Results Among the parturients with advanced paternal age at 6 months postpartum, 134 cases (33.6%) and 265 cases (66.4%) were at low and moderate physical activity levels respectively, with no cases at a high physical activity level. The body mass at 6 months postpartum was (61.31±8.16) kg, and the body mass index (BMI) was (23.57±2.39) kg/m². The incidence of overweight/obesity was 42.9%. A negative correlation was observed between the physical activity level and the incidence of overweight/obesity in parturients with advanced paternal age at 6 months postpartum (r=-0.566, P < 0.001). There were significant differences in postpartum physical activity levels among with parturients with advanced paternal age at different pre-pregnancy BMI, sleep qualities, and family supports (P < 0.05).

Conclusion A higher physical activity level at 6 months postpartum in parturients with advanced paternal age is associated with a lower incidence of overweight/obesity. The physical activity level is comprehensively influenced by pre-pregnancy BMI, sleep quality, and family support.