Background One of the most sought-after skills for performance in team sports is change of direction. Training the physical qualities of strength, speed, and power has been used to improve change of direction. These qualities of change of direction have been studied extensively for the last 20 years, and their influence is still questioned. Additionally, it is currently unknown how moderating training variables affect COD performance. Objective This study examines the impact of strength, power, and speed training on change of direction performance. Method Following the PRISMA guidelines, a meta-analysis was conducted. Electronic databases were searched for studies conducted from 1991 to April 2021. All studies identified for inclusion were peer-reviewed and published in English and Spanish and used an athlete population as participants. For all analyses, a significance level is set at p < 0.05. Results Sixty-six articles were included in this meta-analysis. Two hundred fifty-one effect sizes were calculated, representing 2056 participants aged between 12 and 25 years. The global effect size (ES) for each quality is reported and Cochran's Q test: Strength (N = 48) ES: 0.844 Q = 77.63 (95%CI: 0.65;1.07); Speed (N = 17) ES: 0.70 Q = 5.69 (CI95% = 0.35;1.05); Power (N = 49) ES: 0.85 Q = 47.58 (CI95% = 0.64;1.06); Agility (N = 57) ES: 1.05 Q = 79.63 (CI95% = 0.86;1.24); Combined training (N = 13) ES: 0.51 Q = 13.79 (CI95% = 0.14;0.93), and the Control Group (N = 67) ES: 0.53 Q = 47.40 (IC95% = -0.12;0.23), all ES were statistically significant except control group. The ANOVA-LIKE presented a statistically significant difference between physical qualities and the control group (Sig = 0.000 Q = 69.18). Conclusion The training of strength, speed, power, and agility, are effective training methods for improving change of direction ability. Each of these qualities has one or more moderating variables that influencing its development.
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