44 370 men and women were followed for 4.0 to 14.5 years during which 3451 participants died (7.8% mortality rate). Associations between different combinations of moderate-to-vigorous intensity physical activity (MVPA) and sedentary time were analysed at study level using Cox proportional hazards regression analysis
Results Across cohorts, the average time spent sedentary ranged from 8.5 hours/day to 10.5 hours/day and 8 min/day to 35 min/day for MVPA.

研究人员对44370名男女进行了长达4.0至14.5年的跟踪研究,研究期间3451名参与者死亡(7.8%的死亡率)。研究人员分析了中到高强度体力活动和久坐时间之间的关联
平均久坐时间为8.5小时/天至10.5小时/天的试验参与者,中到高强度体力活动为8分钟/天至35分钟/天。与参照组(最高体力活动/最低久坐时间)相比,中到高强度体力活动时间越低,久坐时间越长,死亡风险越高。

Conclusion Higher sedentary time is associated with higher mortality in less active individuals when measured . About 30–40 min of MVPA per day attenuate the association between sedentary time and risk of death.

结论:在运动较少的个体中,较高的久坐时间与较高的死亡率相关。每天大约30-40分钟的中到高强度体力活动降低了久坐时间和死亡风险之间的关联。