Department of Sport Sciences, Federal University of Triângulo Mineiro, Uberaba, MG,Brazil.
Federal University of Triângulo Mineiro, Uberaba, MG,Brazil.
J Aging Phys Act. 2023 Mar 3;31(5):733-742. doi: 10.1123/japa.2022-0125. Print 2023 Oct 1.
This study investigated the direct and indirect associations of physical activity and sedentary behavior with survival time in older adults. Prospective population-based cohort study used exploratory survey-type methods and physical performance tests in 319 adults aged ≥60 years. Trajectory diagrams were used to represent the initial hypothetical and final models with the relationships of independent, mediating, and dependent variables. Physical activity was indirectly associated with survival time and was mediated by instrumental activities of daily living and functional performance. In contrast, instrumental activities of daily living, functional performance, the number of hospitalizations, and medications mediated the association between duration of sedentary behavior and survival time. The explanatory power of the final model was 19%. Future efforts should focus on increasing the participation and adherence of older adults to exercise programs to improve their physical functions and general health, which may increase their health period and, consequently, their survival time.
本研究探讨了体力活动和久坐行为与老年人生存时间的直接和间接关联。采用前瞻性基于人群的队列研究，对 319 名年龄≥60 岁的成年人使用探索性调查方法和身体表现测试。轨迹图用于表示初始假设和最终模型，以及独立、中介和因变量之间的关系。体力活动与生存时间呈间接关联，并且通过工具性日常生活活动和功能表现进行中介。相反，工具性日常生活活动、功能表现、住院次数和药物则介导了久坐行为持续时间与生存时间之间的关联。最终模型的解释力为 19%。未来的研究应侧重于增加老年人参与和坚持锻炼计划，以改善他们的身体功能和整体健康，这可能会延长他们的健康期，从而延长他们的生存时间。
