Below is a link to a study completed at North Carolina in 1983 where researchers tested MJ's max vertical leap at age 20. His max "vertical reach during a jump from running" was measured at 46 inches during that study.
http://www.jospt.org/doi/pdf/10.2519/jospt.1999.29.1.A1?code=jospt-site
Page 10 (PO 30)
Music: Bad Meets Evil - Fast Lane [Official Instrumental + Hook]
Ludovico Einaudi - Fly (Extended)
