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Isokinetic elbow torque development in children.
Int J Sports Med. 2008 Jun; 29(6):466-70.IJ

Abstract

The aim of this study was to examine age and gender differences in isokinetic eccentric (ECC) elbow flexion (EF) and extension (EE) torques in children. Thirty-seven children participated in a 3-year longitudinal study. The average age +/- SD at the first test occasion was 13.0 +/- 0.3 years. Isokinetic ECC EF and EE torques at 0.52 rad . s (-1), MRI determined muscle cross-sectional areas (CSAs), stature, and arm length were determined annually. Concentric (CON) EF and EE torques for the same children reported previously, enabled functional torque ratios (ECC antagonist/CON agonist) to be calculated [ ]. In contrast to isokinetic EF torques, ECC EE torques were not significantly higher than CON EE torques (across test occasions and for boys and girls). Functional torque ratios did not significantly differ with age or between boys and girls. Multilevel modelling was used to examine age and gender effects once differences in body/muscle size had been considered. ECC EF torque was relatively greater in girls following adjustment for size. These data contribute to the understanding of differences in upper body strength performance and injury propensity during growth and maturation, suggesting CON and ECC torque development are muscle and gender specific.

Authors+Show Affiliations

Sport and Exercise Science, University of Portsmouth, Portsmouth, United Kingdom. louise.wood@port.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18004682

Citation

Wood, L E., et al. "Isokinetic Elbow Torque Development in Children." International Journal of Sports Medicine, vol. 29, no. 6, 2008, pp. 466-70.
Wood LE, Dixon S, Grant C, et al. Isokinetic elbow torque development in children. Int J Sports Med. 2008;29(6):466-70.
Wood, L. E., Dixon, S., Grant, C., & Armstrong, N. (2008). Isokinetic elbow torque development in children. International Journal of Sports Medicine, 29(6), 466-70.
Wood LE, et al. Isokinetic Elbow Torque Development in Children. Int J Sports Med. 2008;29(6):466-70. PubMed PMID: 18004682.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Isokinetic elbow torque development in children. AU - Wood,L E, AU - Dixon,S, AU - Grant,C, AU - Armstrong,N, Y1 - 2007/11/14/ PY - 2007/11/16/pubmed PY - 2008/8/16/medline PY - 2007/11/16/entrez SP - 466 EP - 70 JF - International journal of sports medicine JO - Int J Sports Med VL - 29 IS - 6 N2 - The aim of this study was to examine age and gender differences in isokinetic eccentric (ECC) elbow flexion (EF) and extension (EE) torques in children. Thirty-seven children participated in a 3-year longitudinal study. The average age +/- SD at the first test occasion was 13.0 +/- 0.3 years. Isokinetic ECC EF and EE torques at 0.52 rad . s (-1), MRI determined muscle cross-sectional areas (CSAs), stature, and arm length were determined annually. Concentric (CON) EF and EE torques for the same children reported previously, enabled functional torque ratios (ECC antagonist/CON agonist) to be calculated [ ]. In contrast to isokinetic EF torques, ECC EE torques were not significantly higher than CON EE torques (across test occasions and for boys and girls). Functional torque ratios did not significantly differ with age or between boys and girls. Multilevel modelling was used to examine age and gender effects once differences in body/muscle size had been considered. ECC EF torque was relatively greater in girls following adjustment for size. These data contribute to the understanding of differences in upper body strength performance and injury propensity during growth and maturation, suggesting CON and ECC torque development are muscle and gender specific. SN - 0172-4622 UR - https://www.unboundmedicine.com/medline/citation/18004682/Isokinetic_elbow_torque_development_in_children_ L2 - http://www.thieme-connect.com/DOI/DOI?10.1055/s-2007-989234 DB - PRIME DP - Unbound Medicine ER -