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Drivers of productivity: Being physically active increases yet sedentary bouts and lack of sleep decrease work ability
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DOI：10.1111/sms.14005.png)
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Physical behavior (ie, physical activity, sedentary behavior, and sleep) is a crucial lifestyle factor for preventing and managing diseases across the lifespan. However, less is known about potential work-related psychological and cognitive outcomes such as productivity. The present study examined within-person associations between physical behavior and self-perceived work ability. To investigate the degree to which physical behavior parameters influence self-perceived work ability in everyday life, we conducted an Ambulatory Assessment study in 103 university students over 5 days. Physical behavior was assessed continuously via a multi-sensor system. Self-perceived work ability was assessed repeatedly up to six times per day on smartphones. We employed multilevel modeling to analyze the within-person effects of physical behavior on self-perceived work ability. Physical activity intensity (MET) (beta = 0.15 +/- 0.06, t = 2.59, p = 0.012) and sit-to-stand transitions (beta = 0.07 +/- 0.03, t = 2.44, p = 0.015) were positively associated with self-perceived work ability. Sedentary bouts (>= 20 min) (beta = -0.21 +/- 0.08, t = -2.74, p = 0.006) and deviation from a recommended sleep duration (ie, 8 h) (beta = -0.1 +/- 0.04, t = -2.38, p = 0.018) were negatively associated with self-perceived work ability. Exploratory analyses supported the robustness of our findings by comparing various time frames. Total sedentary time and sleep quality were not associated with self-perceived work ability. Regular sleep durations, breaking up sedentary time through sit-to-stand transitions, and higher intensities of physical activity may be important for the regulation of self-perceived work ability in university students' daily lives.
Keyword:
accelerometry
ambulatory assessment
physical behavior
self-perceived work ability
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