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Meta-Analysis of the Effects of the Different Stretching Durations (Clusters 30–90 s and 270–480 s) on Performance Parameters. SDM = Standardized Difference in Means; * = Significant Effect for SDM.
| Effect Size | Heterogeneity | ||||||
|---|---|---|---|---|---|---|---|
| Stretching Duration | N Studies | N Measures | SDM | 95% CI | Z | p | I2 |
| 30–90 s | 3 | 9 | 0.135 | [−0.168 to 0.438] | 0.874 | 0.382 | 11.95% |
| 270–480 s | 4 | 24 | −0.19 | [−0.379 to 0.000] | −1.959 | 0.05 * | 0.62% |
| 270–480 s (only peak torque) | 4 | 12 | −0.206 | [−0.385 to −0.027] | −2.257 | 0.02 * | 0.97% |
