Exercise interventions can improve muscle strength, endurance, and electrical activity of lumbar extensors in individuals with non-specific low back pain: a systematic review with meta-analysis.

Sci Rep · 2021 · PMC8376921 · PMID 34413400

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might not be significantno p-value reported

The following I 2 statistics were considered: 0–40% might not be significant, 30–60% may represent moderate heterogeneity, 50–90% may represent substantial heterogeneity, and 75–100% may represent considerable heterogeneity 32 .

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