The back is one of the most common body parts affected by workplace injuries or illnesses, with awkward body positions and fatigue being among the main causes.

But a surprising study from the University of Sydney has found that distractions during an activity had the highest odds of developing back pain, and moderate or vigorous physical activity had the lowest odds.

“Understanding which risk factors contribute to back pain and controlling exposure to these risks is an important first step in prevention,” said study co-author Manuela Ferreira.

Nearly 1,000 patients from 300 clinics were asked to report various exposures leading up to the onset of acute low back pain.