Comparisons of bone mineral density between recreational and trained male road cyclists

Christopher Dylan Mojock, Michael J. Ormsbee, Jeong Su Kim, Bahram H. Arjmandi, Gideon A. Louw, Robert J. Contreras, Lynn B. Panton

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objective: To compare measures of training, performance, body composition, and areal bone mineral density (aBMD) between agematched recreational and competitively trained male road cyclists. Design: Cross-sectional. Setting: Laboratory. Participants: Male cyclists (N = 28) aged 21-54 years riding more than 3 hours per week. Assessment of Risk Factors: Men who train at high (≥8 h/wk) and moderate volumes (3-8 h/wk). Main Outcome Measures: Areal bone mineral density assessments by dual energy X-ray absorptiometry of the whole body, lumbar spine (L1-L4), right and left hips, maximal oxygen uptake (V. O2max), and training history. Results: Trained cyclists had higher power to weight (5.3 ± 0.4 vs 4.7 ± 0.3 W/kg, P = 0.001), V. O2max (57.2 ± 4.5 vs 53.0 ± 6.1 mL.kg-1.min-1, P = 0.049) and training volume (10.6 ± 2.1 vs 6.3 ± 0.9 h/wk, P < 0.001) than recreational cyclists. Trained cyclists had lower right (0.898 ± 0.090 vs 0.979 ± 0.107 g/cm2, P = 0.047) and left hip aBMD (0.891 ± 0.079 vs 0.973 ± 0.104 g/cm2, P = 0.032). Z-scores identified lumbar (L1-L4) aBMD as osteopenic (22.5, Z-score, 21.0) in trained cyclists (21.39 ± 1.09). Lumbar scans identified 12 trained and 4 recreational cyclists as osteopenic and 3 trained cyclists as osteoporotic. Conclusions: Areal bone mineral density is lower in trained male road cyclists compared with recreational, specifically at the hips. Lumbar aBMD is low in both trained and recreational cyclists. Research is needed to determine the chronic effects of cycling on aBMD and interventions that improve aBMD in this population. Clinical Relevance: This study suggests road cycling may compromise aBMD and potentially increase the likelihood of low-trauma fractures; health care professionals should consider this exposure when exercise prescriptions are designed for patients at-risk for osteopenia/osteoporosis, for example, women and older adults.

Original languageEnglish (US)
Pages (from-to)152-156
Number of pages5
JournalClinical Journal of Sport Medicine
Volume26
Issue number2
DOIs
StatePublished - Jan 1 2016

Fingerprint

Bone Density
Hip
Pelvic Bones
Metabolic Bone Diseases
Photon Absorptiometry
Body Composition
Osteoporosis
Prescriptions
Spine
History
Outcome Assessment (Health Care)
Exercise
Oxygen
Delivery of Health Care
Weights and Measures
Wounds and Injuries
Research
Population

Keywords

  • Body composition
  • Cycling
  • DXA
  • aBMD

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Mojock, C. D., Ormsbee, M. J., Kim, J. S., Arjmandi, B. H., Louw, G. A., Contreras, R. J., & Panton, L. B. (2016). Comparisons of bone mineral density between recreational and trained male road cyclists. Clinical Journal of Sport Medicine, 26(2), 152-156. https://doi.org/10.1097/JSM.0000000000000186

Comparisons of bone mineral density between recreational and trained male road cyclists. / Mojock, Christopher Dylan; Ormsbee, Michael J.; Kim, Jeong Su; Arjmandi, Bahram H.; Louw, Gideon A.; Contreras, Robert J.; Panton, Lynn B.

In: Clinical Journal of Sport Medicine, Vol. 26, No. 2, 01.01.2016, p. 152-156.

Research output: Contribution to journalArticle

Mojock, CD, Ormsbee, MJ, Kim, JS, Arjmandi, BH, Louw, GA, Contreras, RJ & Panton, LB 2016, 'Comparisons of bone mineral density between recreational and trained male road cyclists', Clinical Journal of Sport Medicine, vol. 26, no. 2, pp. 152-156. https://doi.org/10.1097/JSM.0000000000000186
Mojock, Christopher Dylan ; Ormsbee, Michael J. ; Kim, Jeong Su ; Arjmandi, Bahram H. ; Louw, Gideon A. ; Contreras, Robert J. ; Panton, Lynn B. / Comparisons of bone mineral density between recreational and trained male road cyclists. In: Clinical Journal of Sport Medicine. 2016 ; Vol. 26, No. 2. pp. 152-156.
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