In tracking 6,796 participants of the National Health & Nutrition Examination Survey using simple accelerometers, the authors demonstrated that inactivity was also (independently) linked to low back pain. For instance, overweight persons who increased their physical activity to less than 20min/d could reduce their risk for low back pain by 32%. Truly amazing, yet sad, fact: average duration of moderate intensity activity was 1.3min in the morbidly obese. Yet, increasing physical activity by just 60 seconds reduced risk for low back pain by 38%! So rather than prescribe more narcotics, prescribe more exercise!
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