The present study examined the moderating (buffering) influence of physical fitness on the positive relation between job-related self-control demands and psychological strain. Data from 819 participants were obtained during a voluntary medical checkup. Physical fitness was assessed by a well-established measure of maximal oxygen uptake (expressed as milliliters of oxygen consumed per kilogram of body weight per minute); all other study variables were assessed by validated self-report measures. Hierarchical moderated regression analyses provided support for the prediction that physical fitness buffers the adverse impact of self-control demands on various indicators of psychological strain (burnout, ego depletion, need for recovery). For employees with low levels of physical fitness, the adverse impact of self-control demands on strain was much more pronounced than for those with high levels of physical fitness. The moderating effect of physical fitness suggests preventive interventions, which promote fitness and health, as a stress buffer especially among employees who have to meet high self-control demands at work.

中文翻译：

---

工作中的自我控制需求和心理压力：身体素质的调节作用。

本研究检验了身体健康对工作相关自我控制需求和心理压力之间的正相关关系的调节（缓冲）影响。819 名参与者的数据是在自愿体检期间获得的。身体健康通过公认的最大摄氧量（表示为每公斤体重每分钟消耗的氧气毫升数）进行评估；所有其他研究变量均通过经过验证的自我报告措施进行评估。分层适度回归分析为以下预测提供了支持：身体健康缓冲了自我控制需求对各种心理压力指标（倦怠、自我耗竭、恢复需求）的不利影响。对于身体素质较差的员工，自我控制要求对压力的不利影响比那些身体健康水平高的人要明显得多。身体素质的调节作用表明预防性干预措施可以促进健康和健康，作为压力缓冲，尤其是在工作中必须满足高度自我控制要求的员工中。