Subject: R Medicine (General)
Year: 2018
Type: Article
Type: NonPeerReviewed
Title: VALIDITY OF FAT-FREE WEIGHT EQUATIONS FOR PREDICTING ISOKINETIC PEAK TORQUE IN YOUNG WRESTLERS
Author: L. Camic, Clayton
Author: J. Housh, Terry
Author: Mielke, Michelle
Author: Zuniga, Jorge
Author: Russell Hendrix, C.
Author: O. Johnson, Glen
Author: J. Housh, Dona
Author: J. Schmidt, Richard
Abstract: The purpose of this investigation was to determine the validity of fat-free weight (FFW) equations derived on non-athletic children and adolescents for predicting concentric, isokinetic peak torque (PT) in young wrestlers. Seventy-one male wrestlers (mean age ± SD = 12.6 ± 1.1 years) volunteered to perform concentric, isokinetic leg extensions at 180 and 300°•s-1 on a Cybex II dynamometer to measure PT (Nm) and underwater weighing to determine FFW. Predicted PT values at 180 and 300°•s-1 were also estimated from FFW using the following equations: EQ1: Leg Extension PT at 180°•s-1 in Nm = 3.3(FFW) – 54.4 EQ2: Leg Extension PT at 300°•s-1 in Nm = 2.4(FFW) – 38.5 The validity of the equations was determined by examining the constant error (CE), correlation coefficient (r), standard error of estimate (SEE), and total error (TE) values for measured PT versus predicted PT. There were significant (p < 0.05) mean differences (CE) between the measured PT (mean ± SD: 180°•s-1 = 69.3 ± 23.7 Nm; 300°•s-1 = 44.9 ± 16.9 Nm) and predicted PT (180°•s-1 = 79.6 ± 33.7 Nm; 300°•s-1 = 58.9 ± 24.5 Nm) at 180 and 300°•s-1. The r, SEE, and TE values at 180°•s-1 were 0.92, 9.5 Nm, and 18.3 Nm, respectively. The r, SEE, and TE values at 300°•s-1 were 0.92, 6.6 Nm, and 17.8 Nm, respectively. Although measured PT and predicted PT were highly correlated at both 180 and 300°•s-1, the TE values associated with the equations ranged from 26.4 to 39.6% of the mean measured PT values. It is likely that the magnitude of the errors was due to the fact that the equations cross-validated in the present study were derived on a non-athletic sample that included older subjects with greater PT per unit of FFW than the current sample of young wrestlers.
Publisher: Faculty of Physical Education, Tetova, Republic of North Macedonia
Relation: https://eprints.unite.edu.mk/111/
Identifier: oai:eprints.unite.edu.mk:111
Identifier: https://eprints.unite.edu.mk/111/1/10.pdfIdentifier: L. Camic, Clayton and J. Housh, Terry and Mielke, Michelle and Zuniga, Jorge and Russell Hendrix, C. and O. Johnson, Glen and J. Housh, Dona and J. Schmidt, Richard (2018) VALIDITY OF FAT-FREE WEIGHT EQUATIONS FOR PREDICTING ISOKINETIC PEAK TORQUE IN YOUNG WRESTLERS. SPORT AND HEALTH International Journal of Sport Sciences and Health, 5 (9). pp. 69-78. ISSN 2545 - 4978
