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Janz, Kathleen F.; Laurson, Kelly R.; Baptista, Fatima; Mahar, Matthew T.; Welk, Gregory J. – Measurement in Physical Education and Exercise Science, 2022
Using a sample of healthy youth (n = 466, 10 to 18 yr), we report the predictive utility of vertical jump power (VJ Power, W) for predicting bone strength. We measured VJ Power using mechanography and an indicator of bone strength, i.e., height-adjusted total bone mineral content less head (TBLH BMC, g), using DXA. Growth curve models were used to…
Descriptors: Preadolescents, Adolescents, Psychomotor Skills, Muscular Strength
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Zhu, Weimo; Konishi, Daniel; Welk, Gregory; Mahar, Matthew; Laurson, Kelly; Janz, Kathleen; Baptista, Fatima – Measurement in Physical Education and Exercise Science, 2022
This study evaluated test-equating methods to enable comparisons and conversions between the vertical jump (VJ) and standing long jump (SLJ) tests. A total of 528 youth (280 males) performed VJ and SLJ, and their scores were randomly split as the calibration (C) sample (n = 478) and cross-validation (CV) sample (n = 50). SLJ scores of the C sample…
Descriptors: Psychomotor Skills, Testing, Equated Scores, Foreign Countries
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Mahar, Matthew T.; Welk, Gregory J.; Janz, Kathleen F.; Laurson, Kelly; Zhu, Weimo; Baptista, Fatima – Measurement in Physical Education and Exercise Science, 2022
Incorporation of the vertical jump (VJ) test in health-related fitness batteries is predicated on the availability of prediction equations to accurately estimate VJ power. The purpose was to develop and validate a generalizable equation to estimate VJ power from VJ height, body mass, age, and sex in 10- to 18-year-olds. The sample (N = 529)…
Descriptors: Physical Fitness, Muscular Strength, Psychomotor Skills, Body Height