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Does progressive resistance exercise reduce resting diastolic blood pressure in adults, and how do original versus standardized effect sizes compare in meta-analysis?
Does progressive resistance exercise reduce resting diastolic blood pressure in adults, and how do original versus standardized effect sizes compare in meta-analysis?
The use of original metric effect sizes in meta-analyses is preferred over standardized effect sizes as it provides more clinically meaningful interpretation of results.
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Supports resistance exercise for DBP reduction; confirms original metrics yield superior clinical interpretability over standardized approaches in meta-analyses.
This study compared the use of the original metric effect size with the standardized effect size for clinical data in meta-analysis. The example data set included 17 controlled clinical trials dealing with the effects of progressive resistance exercise on resting diastolic blood pressure in adults. Original metric effect size showed a decrease in resting diastolic blood pressure of -2.07 mm Hg (95% confidence interval, -3.60 to -0.54). From a clinical standpoint, this is considered a "small" effect. The standardized approach showed an average effect of -0.21, 95% CI= -0.39 to -0.02. This is also considered a "smal" effect. When possible, use of the original metric is preferred because it can be more clinically meaningful and will enhance interpretation of blood pressure results for a wider range of readers.
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Kelley et al. (2001) studied this question.
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