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Figure 1 | BMC Musculoskeletal Disorders

Figure 1

From: The relationship between low back pain and leisure time physical activity in a working population of cleaners - a study with weekly follow-ups for 1 year

Figure 1

A model illustration of hours per week of LTPA and weekly LBP intensity over 9 weeks. An increase in LBP intensity by 2 or more from one week to the next is defined as an acute LBP episode (Period A). The following 4 weeks after the acute LBP episode is defined as the follow-up period (Period B). Initial LBP intensity is the pain intensity before the acute LBP episode.

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