Hurst P, Schipof-Godart L, Szabo A, Raglin J, Hettinga F, Roelands B, Lane A, Foad A, Coleman D, Beedie C. The Placebo and Nocebo effect on sports performance: A systematic review. Eur J Sport Sci. 2019 Aug 20:1-14.
Maganaris CN, Collins D, Sharp M. Expectancy Effects and Strength Training: Do Steroids Make a Difference? The Sport Psychologist. 200;14(3):272-278.