Effects of zinc supplementation on vertebral and femoral bone mass in rats on strenuous treadmill training exercise

Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research
C SecoH Rico

Abstract

The hypothesis that a zinc (Zn) deficit may cause osteopenia in athletes is well founded. In rats exposed to strenuous exercise, we evaluated the effect of a zinc supplement on femoral and vertebral bone mass determined by dual-energy X-ray absorptiometry. Four lots of 93-day-old female Wistar rats were studied. A control group of 30 rats were not manipulated (Zn- Ex- group). The experimental group of 40 rats was fed a diet supplemented with an additional 20% of Zn/kg of feed; this group was divided into two groups of 20 rats each, one that did not exercise (Zn+ Ex-) and one that did (Zn+ Ex+). A group of 15 rats exercised but did not receive a zinc supplement (Zn- Ex+ group). Training consisted of treadmill running for 5 out of 7 days over an 11-week period. Initial speed, running time, and treadmill speed were increased gradually. Analysis of variance with the Bonferroni/Dunn test showed that the length, weight, bone mineral content (BMC), and bone mineral density (BMD) of the femur were less in the Zn- Ex+ group than in the others (p < 0.008), and the weight, BMC, and BMD of the fifth lumbar vertebra also were lower in the Zn- Ex+ group than in the others (p < 0.008). These findings confirm the adverse effects of strenuous e...Continue Reading

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Citations

Jan 3, 2001·Calcified Tissue International·H Rico, L F Villa
Feb 1, 2012·The British Journal of Nutrition·Sahar Karieb, Simon W Fox
Dec 28, 1999·Public Health Nutrition·F Branca
Dec 29, 2000·Menopause : the Journal of the North American Menopause Society·H RicoL F Villa
Jul 1, 2007·Nutrition Research and Practice·Young-Eun ChoIn-Sook Kwun
Feb 16, 2020·International Journal of Molecular Sciences·Sana BoughammouraImed Messaoudi
Feb 24, 2001·Journal of the American College of Nutrition·J Z Ilich, J E Kerstetter
Sep 27, 2020·Life·Hugues PortierStéphane Pallu

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