Graduation Term


Document Type


Degree Name

Master of Science (MS)


School of Kinesiology and Recreation

Committee Chair

Kelly R Laurson


Muscular power is an important component of fitness with implications for bone health, explosiveness in movements, and predicting long-term health outcomes. However, the literature is scarce concerning commonly used muscular power field tests among youth, including vertical jump (VJ) and standing broad jump (SBJ). PURPOSE: To investigate the relationship between VJ and SBJ. METHODS: Approximately 540 students (9-14 years of age) in grades 4-8 participated in the testing of the VJ and SBJ. Pearson correlations were used to evaluate relationships between jump variables and intra-class correlations (ICC) were used to examine the consistency of the relationship between the VJ and SBJ. RESULTS: VJ had a positive and moderate-to-strong relationship with SBJ (r = 0.74), p < 0.05. ICC analyses demonstrated VJ had poor consistency (ICC = 0.36, p < 0.05) with SBJ. Regression analyses showed an r2 of 0.549 when predicting VJ from SBJ. The r2 was 0.576 when sex, age, and BMI percentile were accounted for, all p < 0.05. CONCLUSIONS: Pearson correlations show the VJ has a positive and strong relationship with SBJ. The VJ displays moderate reliability with SBJ. While each are used as field assessments of lower body power in youth, each contributes unique variance during assessment. Further investigation is needed to better determine this unexplained variance.KEYWORDS: Vertical Jump, Standing Broad Jump, youth, reliability, consistency, validity.


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