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© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.2 TABLE 1 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April TABLE 1. Anthropometric measures of the test subjects.
© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.3 TABLE 2 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April TABLE 2. Previous jump power equations in the literature.
© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.4 TABLE 3 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April TABLE 3. Peak power equations developed in present study.
© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.5 TABLE 4 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April TABLE 4. Comparisons of actual peak power to equation- predicted peak power (N = 108).
© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.6 TABLE 5 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April TABLE 5. Cross-validation results of new equations (2a and 2b) using PRESS and data-splitting techniques.
© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.7 TABLE 6 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April TABLE 6. Comparisons of Interchanged SJ and CMJ data in Equations 2a and 2b (N = 108).
© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.8 TABLE 7 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April TABLE 7. Comparisons of males and females predicted power from equations 2a and 2b (N = 108).
© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.9 Figure 1 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April Figure 1 -Regression lines for three peak power equations used in this study using SJ data vs actual peak power scores as recorded by the force platform. The Harman et al. (6) equation (61.9 x SJ height [cm] x body mass [kg] ) and equation IIa (60.7 x SJ height [cm] X body mass [kg] ) reveal accurate regression equations. The Lewis formula (4) ([square root]4.9 x body mass [kg] x [square root]SJ height (m) greatly underestimates peak power.
© 1999 Lippincott Williams & Wilkins, Inc. Published by Lippincott Williams & Wilkins, Inc.10 TABLE 8 Cross-validation of three jump power equations. SAYERS, STEPHEN; HARACKIEWICZ, DAVID; HARMAN, EVERETT; FRYKMAN, PETER; ROSENSTEIN, MICHAEL Medicine & Science in Sports & Exercise. 31(4): , April TABLE 8. Analysis of variance.