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May Young Elite Cyclists Have Less Efficient Bone Metabolism?

Departamento de Expresión Musical, Plástica y Corporal, Facultad de Ciencias de la Salud y del Deporte, Universidad de Zaragoza, Huesca, C/Ronda Misericordia, 5, 22001 Huesca, Spain
Department of Functional Biology, Universidad de Oviedo, Campus del Cristo B. Julián Clavería s/n, 33006 Asturias, Spain
GENUD (Growth, Exercise, NUtrition and Development) Research Group, Universidad de Zaragoza, 50009 Zaragoza, Spain
Department of Physiatry and Nursing, Faculty of Health and Sport Sciences (FCSD), University of Zaragoza, Ronda Misericordia 5, 22001 Huesca, Spain
Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBERObn), 28029 Madrid, Spain
Instituto Agroalimentario de Aragón (IA2), 50013 Zaragoza, Spain
Centro Universitario de la Defensa, 50090 Zaragoza, Spain
Department of Physiatry and Nursing, Faculty of Health Sciences, University of Zaragoza, Calle Domingo Miral, s/n, 50009 Zaragoza, Spain
Author to whom correspondence should be addressed.
Received: 10 April 2019 / Revised: 16 May 2019 / Accepted: 21 May 2019 / Published: 26 May 2019
(This article belongs to the Special Issue Calcium, Vitamin D and Health)
The purpose of this work was to describe changes in metabolic activity in the bones of young male competitive cyclists (CYC) as compared with age-matched controls (CON) over a one-year period of study. Eight adolescent male cyclists aged between fourteen and twenty, and eight age-matched controls participated in this longitudinal study. Serum osteocalcin (OC), amino-terminal propeptide of type I procollagen (PINP), beta-isomerized C-telopeptides (β-CTx) and plasma 25 hydroxyvitamin D [25(OH)D], were investigated by an electrogenerated chemiluminescence immunoassay. Analysis of variance revealed no significant differences in formation and resorption markers between cyclists and controls. Within the groups, both CYC and CON showed decreased OC at −30% and −24%, respectively, and PINP where the figures were −28% and −30% respectively (all p < 0.05). However, only the CYC group showed a decrease in [25(OH)D], lower by 11% (p < 0.05). The similarity in the concentrations of markers in cyclists and controls seems to indicate that cycling does not modify the process of bone remodeling. The decrease in vitamin D in cyclists might be detrimental to their future bone health. View Full-Text
Keywords: cyclists; adolescence; bone turnover; osteocalcin; vitamin D cyclists; adolescence; bone turnover; osteocalcin; vitamin D
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MDPI and ACS Style

Rapún-López, M.; Olmedillas, H.; Gonzalez-Agüero, A.; Gomez-Cabello, A.; Pradas de la Fuente, F.; Moreno, L.A.; Casajús, J.A.; Vicente-Rodríguez, G. May Young Elite Cyclists Have Less Efficient Bone Metabolism? Nutrients 2019, 11, 1178.

AMA Style

Rapún-López M, Olmedillas H, Gonzalez-Agüero A, Gomez-Cabello A, Pradas de la Fuente F, Moreno LA, Casajús JA, Vicente-Rodríguez G. May Young Elite Cyclists Have Less Efficient Bone Metabolism? Nutrients. 2019; 11(5):1178.

Chicago/Turabian Style

Rapún-López, Marta, Hugo Olmedillas, Alejandro Gonzalez-Agüero, Alba Gomez-Cabello, Francisco Pradas de la Fuente, Luis A. Moreno, José A. Casajús, and Germán Vicente-Rodríguez. 2019. "May Young Elite Cyclists Have Less Efficient Bone Metabolism?" Nutrients 11, no. 5: 1178.

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