Isotemporal substitution of sedentary time by physical activity of different intensities and bout lengths, and its associations with metabolic risk
Isotemporal substitution of sedentary time by physical activity of different intensities and bout lengths, and its associations with metabolic risk
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DOI：
10.1177/2047487315619734
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发表时间：
2016-06-01
影响因子：
8.3
通讯作者：
Borjesson, Mats
中科院分区：
文献类型：
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作者：
Ekblom-Bak, Elin;Ekblom, Orjan;Borjesson, Mats
背景：无论运动时间长短，久坐不动的时间与使用回归模型的代谢风险相关。通过使用等时替代模型，可以考虑用不同强度的体力活动（PA）中的等量时间替代久坐时间的效果。本研究旨在探讨轻、中、高强度PA对代谢综合征（MetS）患病率的影响。此外，更换久坐不动的时间PA的不同回合lengths.Methods，共836名参与者（52%的女性），年龄在50-64岁，从SCAPIS试点研究。每天花费的时间久坐，并在PA的不同强度进行了评估，使用髋关节佩戴accelerometers.Results在这个横断面研究中，取代10分钟的久坐时间与等量的光PA与显着降低代谢综合征的患病率，比值比（OR）0.96（95%置信区间0.93-0.98）。用中度PA替代导致更低的OR，0.89（0.82-0.97），其中剧烈PA的OR最低，为0.41（0.26-0.66）。高能量摄入和每日久坐时间长的参与者从用轻PA代替久坐时间中获益更多。显着的协会被视为所有回合长度的轻，中度和大力PA在一个逐步的方式，从一分钟到120分钟bouts.Conclusion理论替代久坐不动的时间与PA的任何强度和少至一分钟与显着较低的OR为MetS。这可能是临床实践和公共卫生目的中容易传达的信息。
Background Time spent being sedentary, regardless of time in exercise, has been associated with metabolic risk using regression modelling. By using isotemporal substitution modelling, the effect of replacing sedentary time with an equal amount of time in physical activity (PA) of different intensities can be considered. The present study aims to investigate the effect of replacing sedentary time with time in light, moderate and vigorous PA to the prevalence of the metabolic syndrome (MetS). Also, replacement of sedentary time by PA of different bout lengths was studied.Methods In total, 836 participants (52% women), aged 50-64 years, from the SCAPIS pilot study were included. Daily time spent sedentary and in PA of different intensities was assessed using hip-worn accelerometers.Results In this cross-sectional study, replacing 10 minutes of sedentary time with the same amount of light PA was associated with significant lower MetS prevalence, odds ratio (OR) 0.96 (95% confidence interval 0.93-0.98). Replacement with moderate PA resulted in even lower OR, 0.89 (0.82-0.97), with the lowest OR for vigorous PA, 0.41 (0.26-0.66). Participants with high energy intake and high daily sedentary time benefitted more from the replacement of sedentary time with light PA. Significant associations were seen for all bout lengths of light, moderate and vigorous PA in a stepwise-like fashion from one minute to up to 120 minute bouts.Conclusion Theoretical substitutions of sedentary time with PA of any intensity and of as little as one minute were associated with significantly lower ORs for MetS. This may be an easily communicable message in clinical practice and for public health purposes.