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The 3 Core Strength Tests Every Back Pain Sufferer Should Try

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158 views46likes17:02rehabfixOriginal Release: 2026-07-21

Core endurance, not maximum strength, is more closely associated with spinal health and low back pain prevention. Three researched endurance tests evaluate spinal stability: the Side Plank Endurance Test (measuring lateral chain stability with the QL muscle), the Trunk Flexor Endurance Test (assessing frontal plane stability with rectus abdominis and obliques), and the Lumbar Extensor Endurance Test (testing posterior chain strength with spinal erectors). Healthy adults should achieve specific endurance scores and ratios: side plank over 90 seconds with less than 5% difference between sides, side bridge to extensor ratio of 75 or less, and flexor to extensor ratio of 80% or higher. Research shows that people with low back pain score significantly lower on these tests, and those scoring below 176 seconds on the lumbar extensor test have a higher probability of experiencing low back pain within the next year.