Socioeconomic position (SEP) across life is found to be related to adult physical performance, but the underlying pathways are not well characterized. Using a British birth cohort (N = 2956), the associations of SEP from childhood into midlife with objective physical performance measures in midlife were examined, adjusting for possible confounders or mediators, including indicators of muscle development and central nervous system function. Childhood and adulthood SEP were positively related to standing balance and chair rise performance, but not to grip strength after basic adjustments. When both father's occupation and mother's education were included in the same model, having a mother with low education was associated with 0.6 standard deviations (SD) (95% confidence interval (CI: 0.3, 0.8)) poorer standing balance time compared with having a mother with the highest educational level, and having a father in the lowest occupational group was associated with a 0.3 SD (95% CI: 0.1, 0.6) lower chair rise score compared with having a father in the highest occupational group. These associations were maintained, albeit attenuated, after adjustment. In contrast, the associations of own education and adult occupation with physical performance were generally not maintained after adjustment. SEP across life impacts on midlife physical performance, and thereby the ageing process.

中文翻译：

---

中年的终身社会经济地位和身体表现：来自英国 1946 年出生队列的结果。

整个生命中的社会经济地位 (SEP) 被发现与成人的身体表现有关，但潜在的途径没有得到很好的表征。使用英国出生队列（N = 2956），检查了从童年到中年的 SEP 与中年客观身体表现测量的关联，调整了可能的混杂因素或介质，包括肌肉发育和中枢神经系统功能的指标。儿童期和成年期 SEP 与站立平衡和椅子上升表现呈正相关，但与基本调整后的握力无关。当父亲的职业和母亲的教育都包含在同一模型中时，母亲教育程度低与 0.6 个标准差 (SD) 相关（95% 置信区间 (CI: 0.3, 0. 8)) 与拥有最高教育水平的母亲相比，站立平衡时间更短，并且与拥有最高教育水平的母亲相比，拥有最低职业组的父亲与 0.3 SD (95% CI: 0.1, 0.6) 较低的椅子上升分数相关职业最高级别的父亲。这些关联在调整后得以维持，尽管有所减弱。相比之下，自身教育和成人职业与身体表现的关联在调整后普遍不保持。一生中的 SEP 会影响中年的身体表现，从而影响衰老过程。这些关联在调整后得以维持，尽管有所减弱。相比之下，自身教育和成人职业与身体表现的关联在调整后普遍不保持。一生中的 SEP 会影响中年的身体表现，从而影响衰老过程。这些关联在调整后得以维持，尽管有所减弱。相比之下，自身教育和成人职业与身体表现的关联在调整后普遍不保持。一生中的 SEP 会影响中年的身体表现，从而影响衰老过程。