Fig 1. Interaction effects between perceived social support and job stress due to workload on probability of having a very low level of physical activity.

Solid line represents high social support, dotted line represents low social support. Two lines crossing over each other indicates that job stress due to workload interacted significantly with perceived social support (p = 0.044). Very low level of physical activity indicates having had ≤30 minutes of moderate/vigorous physical activity in the last week.