This study found that adding plyometrics to a strength training program resulted in a significant increase in lower body power. Try adding exercises like box jumps to improve your power production and squat performance!
Reference: Adams, K., O’Shea, J. P., O’Shea, K. L., & Climstein, M. (1992). The effect of six weeks of squat, plyometric and squat-plyometric training on power production. Journal of Applied Sport Science Research, 6(1), 36-41.