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Cohen’s d effect size for the difference observed between the “fast” and “hard-and-fast” instructions. Fmax: maximal voluntary force; RMSFmax: RMS amplitude at Fmax; RFDmax: maximal rate of force development; RMSRFDmax: RMS amplitude at RFDmax; RMAmax: maximal rate of muscle activity; EMDmax: maximal electromechanical delay; T25-50%: time elapsed between achieving 25 and 50% of Fmax.
