High-intensity exercise of short duration alters bovine bone density and shape

Journal of Animal Science
K M HineyB P Marks

Abstract

The ability of short-duration high-intensity exercise to stimulate bone formation in confinement was investigated using immature Holstein bull calves as a model. Eighteen bull calves, 8 wk of age, were assigned to one of three treatment groups: 1) group-housed (GR, which served as a control), 2) confined with no exercise (CF), or 3) confined with exercise (EX). The exercise protocol consisted of running 50 m on a concrete surface once daily, 5 d/wk. Confined calves remained stalled for the 42-d duration of the trial. Blood samples were taken to analyze concentrations of osteocalcin and deoxypyridinoline, markers of bone formation and resorption. At the completion of the trial, calves were humanely killed, and both forelegs were collected. The fused third and fourth metacarpal bone was scanned using computed tomography for determination of cross-sectional geometry and bone mineral density. Three-point bending tests to failure were performed on metacarpal bones. The exercise protocol resulted in the formation of a rounder bone in EX as well as in increased dorsal cortex thickness compared with those in the GR and CF. The exercised calves had a significantly smaller medullary cavity than CF and GR (P < 0.01) and a larger percentag...Continue Reading

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Citations

Aug 23, 2020·Animals : an Open Access Journal From MDPI·Michaela GibsonChris Rogers
Oct 21, 2014·Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T·M KornmayerM Kramer
Apr 12, 2011·PM & R : the Journal of Injury, Function, and Rehabilitation·Gopi C Kasturi, Robert A Adler
Oct 14, 2011·Journal of Animal Physiology and Animal Nutrition·A LiesegangM Wanner
Apr 15, 2016·The Journal of Veterinary Medical Science·Ayami MaetaniKazutaka Yamada
Mar 21, 2012·Scandinavian Journal of Medicine & Science in Sports·M K Karlsson, B E Rosengren
Oct 24, 2006·Journal of Veterinary Medicine. A, Physiology, Pathology, Clinical Medicine·U WeilerR Claus
Feb 13, 2021·Animals : an Open Access Journal From MDPI·Alyssa A Logan, Brian D Nielsen
Jul 3, 2021·Veterinary Sciences·Francisco Escalera-ValenteJosé Ramiro González-Montaña

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