Independent · No manufacturer sponsorshipReviews updated weekly
Three working physical therapists, four office workers, one month of telemetry. The data on movement frequency that surprised us.
Four desk workers wore lumbar-load sensors for 30 days. Three physical therapists reviewed the data weekly. We were looking for the cadence at which sitting load translated into self-reported discomfort.
Across all four subjects, lumbar load metrics inflected sharply at roughly 90 continuous minutes of sitting — not 60, not 120, but 90. A two-minute postural change at that mark reset load metrics for another full cycle.
Set a 90-minute timer. When it fires, do one of three things: stand for two minutes, walk for two minutes, or do a single set of any mobility movement. The exact movement matters far less than the interruption.
Written by
Dr. Lena Park, DPTDoctor of Physical Therapy and lead reviewer at Ergoprise. Specializes in workplace posture, cervical-spine load, and the biomechanics of seated work.
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