Supplementary Table S23. CINeMA confidence evidence profile for the 40 m sprint performance. Comparison Number of studies Within-study bias Reporting bias Indirectness Imprecision Heterogeneity Incoherence Confidence rating Endurance Training: Regular Training 1 No concerns Some concerns No concerns Major concerns No concerns No concerns Very Low Endurance Training: Speed Training 1 Some concerns Some concerns No concerns Major concerns No concerns No concerns Low Regular Training: Traditional Strength Training 5 No concerns Some concerns No concerns No concerns Major concerns No concerns Low Speed Training: Traditional Strength Training 1 Some concerns Some concerns No concerns Major concerns No concerns No concerns Low Endurance Training: Traditional Strength Training 0 No concerns Some concerns No concerns Major concerns No concerns No concerns Very Low Regular Training: Speed Training 0 No concerns Some concerns No concerns Major concerns No concerns No concerns Low