Results 51 to 60 of about 2,656,410 (257)

Phase specific changes in the countermovement jump occur without change in peak metrics following training [PDF]

, 2021
The countermovement jump (CMJ) is routinely used to assess changes in strength-power qualities. Common measures derived from this test include jump height, peak power and peak velocity.
Lake, Jason P., James, Lachlan
core   +1 more source

Optimizing calibration of modern skeletal maturity systems

Journal of Children's Orthopaedics
Purpose: Greulich and Pyle is the most used system to estimate skeletal maturity but has significant drawbacks, prompting the development of newer skeletal maturity systems, such as the modified Fels skeletal maturity systems based on knee radiographs ...
Ryan J Furdock, Andrew J Moyal, Alexander Benedick, Feng-Chang Lin, Yajing Hao, Daniel R Cooperman, James O Sanders, Raymond W Liu   +7 more
doaj   +1 more source

Pubertal growth in height, sitting height and leg length in achondroplasia

Annals of Human Biology, 2021
Background: Children with achondroplasia (ACH) appear to lack a pubertal growth spurt in height. Aim To explore the growth spurt in height and its segments sitting height and leg length, in a large sample of ACH cases using growth curve modelling ...
T. J. Cole, M. del Pino, P. Adamo, V. Fano   +3 more
doaj   +1 more source

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

Advanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch, Maximilian Holland, Klaus Drechsler, Johannes Schilp   +3 more
wiley   +1 more source

Optimization of the Production of Rubber Compounds Using Mathematical Models

Advanced Engineering Materials, EarlyView.
Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle, Andreas Limper, Ulrich Giese, Carlos Lucke, Mario Beiner, Christoph Gögelein, Lisa Leuchtenberger‐Engel, Christian Hopmann   +7 more
wiley   +1 more source

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

Advanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao, Sriram Subramanian, Gianluca Memoli   +2 more
wiley   +1 more source

Barefoot running improves economy at high intensities and peak treadmill velocity [PDF]

, 2014
Aim: Barefoot running can improve running economy (RE) compared to shod running at low exercise intensities, but data is lacking for the higher intensities typical during many distance running competitions.
Barwood, Martin J., Reeves, K. A., Corbett, Jo, Reeves, Kevin, Barwood, Martin   +4 more
core  

Variable and changing trajectories in youth athlete development: further verification in advocating a long-term inclusive tracking approach. [PDF]

, 2014
Athlete development through adolescence can vary greatly because of maturational processes. For example, variation can be observed in anthropometric and fitness measures with later maturing individuals "catching up" their earlier maturing peers at later ...
O'Hara, J, Cobley, Stephen P., Chapman, C, O'Hara, John, Cobley, S, Cooke, Carlton, Till, K, Cooke, CB, Chapman, Chris, Till, Kevin   +9 more
core   +1 more source

Estimating Body Composition in Adolescent Sprint Athletes: Comparison of Different Methods in a 3 Years Longitudinal Design. [PDF]

PLoS ONE, 2015
A recommended field method to assess body composition in adolescent sprint athletes is currently lacking. Existing methods developed for non-athletic adolescents were not longitudinally validated and do not take maturation status into account.
Dirk Aerenhouts, Peter Clarys, Jan Taeymans, Jelle Van Cauwenberg   +3 more
doaj   +1 more source

A Mixed-Longitudinal Study of Height Velocity of Greek Schoolchildren and the Milestones of the Adolescent Growth Spurt

Children, 2022
Height velocity (HV) growth charts constructed from longitudinal studies are scarce as they have inherent difficulties, e.g., time, and costs. These difficulties can be partly overcome by a mixed-longitudinal study that covers the entire age range within
Kleanthis Kleanthous, Dimitrios T. Papadimitriou, Alexandros Gryparis, Vassiliki Papaevangelou, Anastasios Papadimitriou   +4 more
doaj   +1 more source