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  1. NLM Digital Collections - Physical fitness & sports medicine : 1406 selected citations 
    Publication: Bethesda, Md. : U.S. Dept. of Health and Human Services, Public Health Service, National Institutes of Health : National Library of Medicine, Public Services Division, [1988]
    resource.nlm.nih.gov/101589939
    ... 1987 Apr;67(9):28-9 Brzycki M. Plyometrics: a giant step backwards. Athl J 1986 Apr; ... Brown ME ; Mayhew JL; Boleach LW. Effect of plyometric training on vertical jump performance in high school ...