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Osteoporosis International

, Volume 14, Issue 8, pp 644–649 | Cite as

Low bone mineral density in highly trained male master cyclists

  • Jeanne F. Nichols
  • Jacob E. Palmer
  • Susan S. Levy
Original Article

Abstract

The purpose of this study was to determine total and regional bone mineral density (BMD) in highly competitive young adult and master male cyclists. Three groups of men were studied: older cyclists (51.2±5.3 years, n=27); young adult cyclists (31.7±3.5 years, n=16); and 24 non-athletes matched by age (±2 years) and body weight (±2 kg) to the master cyclists. All of the master cyclists had been training and racing for a minimum of 10 years (mean 20.2±8.4 years) and engaging in little to no weight-bearing exercise. The younger cyclists also engaged in little weight-bearing exercise and had been training and racing for 10.9±3.2 years. Age-matched controls were normally active. The History of Leisure Activity Questionnaire was used to determine the influence on BMD of self-reported total and weight-bearing exercise during three periods of life: 12–18 years, 19–34 years, and 35–49 years. BMD (measured by DXA) of the spine (L2–L4) and total hip was significantly (P<0.033) lower in the master cyclists compared to both age-matched controls and young adult cyclists. Total body BMD was lower in the master cyclists compared to the young-adults (P<0.033). Furthermore, four (15%) of the master cyclists, but none of the men in the other groups, had T-scores (spine and/or hip) lower than –2.5. Weight-bearing exercise performed during teen and young adult years did not appear to influence BMD, as there were no differences at any site between those within the upper and lower 50th percentiles for weight-bearing exercise during the 12–18, 19–34, or 35–49 year time periods. These data indicate that master cyclists with a long history of training exclusively in cycling have low BMD compared to their age-matched peers. Although highly trained and physically fit, these athletes may be at high risk for developing osteoporosis with advancing age.

Keywords

Bicycling Bone mass Bone density DXA Exercise Master athletes 

References

  1. 1.
    Rizzoli R, Schaad MA, Uebelhart B (2001) Osteoporosis in men. Nurs Clin North Am 36:467–479PubMedGoogle Scholar
  2. 2.
    Dalsky GP, Stocke KS, Ehsani AA, Slatopolsky E, Lee WC, Birge SJ (1988) Weight-bearing exercise training and lumbar bone mineral content in postmeopausal women. Ann Int Med 108:824–828Google Scholar
  3. 3.
    Menkes A, Mazel S, Redmund RA et al. (1993) Strength training increases regional bone mineral density and bone remodeling in middle-aged and older men. J Appl Physiol 74:2478–2484PubMedGoogle Scholar
  4. 4.
    Welten, DC, Kemper HC, Post GB et al. (1994) Weight-bearing activity during youth is a more important factor for peak bone mass than calcium intake. J Bone Miner Res 9:1089–1096PubMedGoogle Scholar
  5. 5.
    Rubin CT, Lanyon LE (1985) Regulation of bone mass by mechanical strain magnitude. Calcif Tissue Int 37:411–417PubMedGoogle Scholar
  6. 6.
    Umemura Y, Ishiko T, Tsujimoto H (1995) The effects of jump training on bone hypertrophy in young and old rats. Int J Sports Med 16:364–367PubMedGoogle Scholar
  7. 7.
    Bassey EJ, Littlewood JJ, Taylor SJ (1997) Relations between compressive axial forces in an instrumented massive femoral implant, ground reaction forces, and integrated electromyographs from vastus lateralis during various osteogenic exercises. J Biomech 30:213–223CrossRefPubMedGoogle Scholar
  8. 8.
    Andreoli A, Monteleone M, Van Loan M, Prmenzio L, Tarantino U, De Lorenzo A (2001) Effects of different sports on bone density and muscle mass in highly trained athletes. Med Sci Sports Exerc 33:507–511PubMedGoogle Scholar
  9. 9.
    Calbet JAL, Diaz P, Herrera, Rodriguez LP (1999) High bone mineral density in male elite professional volleyball players. Osteoporos Int 10:468–474CrossRefPubMedGoogle Scholar
  10. 10.
    Morel J, Combe B, Francisco J, Bernard J (2001) Bone mineral density of 704 amateur sportsmen involved in different physical activities. Osteoporos Int 12:152–157CrossRefPubMedGoogle Scholar
  11. 11.
    Mackelvie KJ, McKay HA, Khan KM, Crocker PR (2001) A school-based exercise intervention augments bone mineral accrual in pubertal girls. J Pediatr 139:501–508CrossRefPubMedGoogle Scholar
  12. 12.
    Baldwin KM, White TP, Arnaud SB et al. (1996) Musculoskeletal adaptations to weightlessness and development of effective countermeasures. Med Sci Sports Exerc 10:1247–1253Google Scholar
  13. 13.
    Leblanc AD, Schneider VS, Harlan JE, Engelbretson DA, Krebs JM (1990) Bone mineral loss and recovery after 17 weeks of bed rest. J Bone Miner Res 5:843–850PubMedGoogle Scholar
  14. 14.
    Stewart AD, Hannan J (2000) Total and regional bone density in male runners, cyclists, and controls. Med Sci Sports Exerc 32:1373–1377PubMedGoogle Scholar
  15. 15.
    Taaffe DR, Snow-Harter C, Connolly DA, Robinson TL, Brown MD, Marcus R (1995) Differential effects of swimming versus weight-bearing activity on bone mineral status of eumenorrheic athletes. J Bone Miner Res 10:586–593PubMedGoogle Scholar
  16. 16.
    Kriska AM, Sandler RB, Cauley JA, LaPorte RE, HomDL, Pambianco G (1988) The assesement of historical physical activity and its relation to adult bone parameters. Am J Epidemiol 127:1053–1063PubMedGoogle Scholar
  17. 17.
    Chasan-Taber L, Ericson JB, McBride JW, Nasca PC, Chasan-Taber S, Freedson PS (2002) Reproducibility of a self-administered lifetime physical activity questionnaire among female college alumnae. Am J Epidemiol 155:282–289CrossRefPubMedGoogle Scholar
  18. 18.
    Frost HM (1997) Why do marathon runners have less bone than weight lifters? A vital-biomechanical view and explanation. Bone 20:183–189CrossRefPubMedGoogle Scholar
  19. 19.
    Heinonen A, Oja P, Kannus P, Sievanen H, Haapasalo H, Manttari A, Vuori I (1995) Bone mineral density in female athletes representing sports with different loading characteristics of the skeleton. Bone 17:197–203CrossRefPubMedGoogle Scholar
  20. 20.
    Warner SE, Shaw JM, Dalsky GP (2000) Bone mineral density of competitive male mountain and road cyclists. Bone 30:281–286CrossRefGoogle Scholar

Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2003

Authors and Affiliations

  • Jeanne F. Nichols
    • 1
  • Jacob E. Palmer
    • 1
  • Susan S. Levy
    • 1
  1. 1.Department of Exercise & Nutritional SciencesSan Diego State UniversitySan DiegoUSA

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