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Direct linkJanz, 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
Laurson, Kelly R.; Baptista, Fátima; Mahar, Matthew T.; Welk, Greg J.; Janz, Kathleen F. – Measurement in Physical Education and Exercise Science, 2022
We developed plank test standards, based on trunk lean mass-to-fat mass (LM/FM) ratio, in a sample of healthy Portuguese 10--18 year olds (n = 474, 46.4% female). Height and weight were measured and muscular endurance was assessed using the prone plank test. Trunk LM/FM ratio was determined using dual-energy x-ray absorptiometry. Plank standards…
Descriptors: Test Construction, Muscular Strength, Foreign Countries, Preadolescents
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
Baptista, Fátima; Zymbal, Vera; Janz, Kathleen F. – Measurement in Physical Education and Exercise Science, 2022
This study examined the predictive validity of musculoskeletal fitness tests for identifying sarcopenia in youth. The sample was 529 participants age 10 to 18 years. Indices included: total lean body mass (LBM) normalized for height (LBM index, LBMI, kg/m2), appendicular LBMI (aLBMI, kg/m[superscript 2]), and LBM to fat body mass (FBM) ratio…
Descriptors: Predictive Validity, Physical Fitness, Tests, Preadolescents
Janz, Kathleen F.; Baptista, Fatima; Ren, Sicong; Zhu, Weimo; Laurson, Kelly R.; Mahar, Matthew T.; Pavlovic, Andjelka; Welk, Gregory J. – Measurement in Physical Education and Exercise Science, 2022
This study summarized protocols in the "Lisbon Study for the Development and Evaluation of Musculoskeletal Fitness Standards in Youth" and assessed associations between fitness assessments and health outcomes. The sample was 529 children and adolescents (10 to 18 yr). The fitness assessments included handgrip, vertical jump, long jump,…
Descriptors: Physical Fitness, Tests, Muscular Strength, Psychomotor Skills
Corbin, Charles B.; Janz, Kathleen F.; Baptista, Fátima – Journal of Physical Education, Recreation & Dance, 2017
Power has long been considered to be a skill-related fitness component. However, based on recent evidence, a strong case can be made for the classification of power as a health-related fitness component. Additionally, the evidence indicates that performing physical activities that build power is associated with the healthy development of bones…
Descriptors: Physical Activities, Physical Education, Health Related Fitness, Tests
