Department of Public Health and Primary Care, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium.
National Research Centre for the Working Environment, Lersø Parkallé 105, 2100 Copenhagen, Denmark.
Int J Environ Res Public Health. 2020 Oct 29;17(21):7929. doi: 10.3390/ijerph17217929.
In contrast to leisure time physical activity (LTPA), occupational physical activity (OPA) does not have similar beneficial health effects. These differential health effects might be explained by dissimilar effects of LTPA and OPA on cardiorespiratory fitness (CRF). This study investigated cross-sectional associations between different physical behaviours during both work and leisure time and CRF by using a Compositional Data Analysis approach. Physical behaviours were assessed by two accelerometers among 309 workers with various manual jobs. During work time, more sedentary behaviour (SB) was associated with higher CRF when compared relatively to time spent on other work behaviours, while more SB during leisure time was associated with lower CRF when compared to other leisure time behaviours. Reallocating more time to moderate-to-vigorous physical activity (MVPA) from the other behaviours within leisure time was positively associated with CRF, which was not the case for MVPA during work. The results of our study are in line with the physical activity health paradox and we call for further study on the interaction between LTPA and OPA by implementing device-worn measures in a longitudinal design. Our results highlight the need for recommendations to take into account the different effects of OPA and LTPA on CRF.
与休闲时间体力活动（LTPA）不同，职业体力活动（OPA）没有类似的有益健康的效果。这些不同的健康效果可能是由于 LTPA 和 OPA 对心肺健康（CRF）的不同影响造成的。本研究采用成分数据分析方法，研究了工作和休闲时间不同体力活动与 CRF 之间的横断面相关性。通过两个加速度计评估了 309 名从事各种体力劳动的工人的体力活动。与其他工作行为相比，工作时更多的久坐行为（SB）与更高的 CRF 相关，而与其他休闲时间行为相比，休闲时间更多的 SB 与更低的 CRF 相关。与其他休闲时间行为相比，将更多的时间重新分配到中等至剧烈体力活动（MVPA）中与 CRF 呈正相关，而工作时的 MVPA 则并非如此。我们的研究结果与体力活动健康悖论一致，我们呼吁通过在纵向设计中使用佩戴设备的措施进一步研究 LTPA 和 OPA 之间的相互作用。我们的研究结果强调了需要制定建议，以考虑到 OPA 和 LTPA 对 CRF 的不同影响。
