Low bone mineral density in highly trained male master cyclists

  title={Low bone mineral density in highly trained male master cyclists},
  author={Jeanne Nichols and Jacob E. Palmer and Susan S. Levy},
  journal={Osteoporosis International},
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… 
Bone density comparisons in male competitive road cyclists and untrained controls.
It is indicated that male cyclists had lower spine BMD than controls, which was not associated with group differences in testosterone, and future studies are needed to elucidate the underlying mechanisms for low bone mass in cyclists.
Bone Related Health Status in Adolescent Cyclists
Cycling performed throughout adolescence may negatively affect bone health, then compromising the acquisition of peak bone mass, as described in bone status and analyse bone mass in adolescent cyclists.
Bone health in elite Norwegian endurance cyclists and runners: a cross-sectional study
National elite Norwegian road cyclists had lower BMD compared with runners, and a large proportion was classified as having low BMD, despite having performed heavy resistance training, despite reporting to train heavy resistanceTraining on the lower extremities.
Bone Loss Over 1 Year of Training and Competition in Female Cyclists
Bone loss in female cyclists was site specific and similar in magnitude to losses previously reported in male cyclists.
Evaluation of the bone status in high-level cyclists.
  • G. Guillaume, D. Chappard, M. Audran
  • Medicine, Biology
    Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry
  • 2012
Male master cyclists who exercise with a mild training volume (5-6 hrs/wk) maintained aBMD at the lumber spine and femoral neck and aLM tended to increase over the 2-year period.
Bone Mineral Density in Athletes of Different Disciplines: a Cross- Sectional Study
Assessment of bone mineral density in male and female athletes performing different high level sports, in unspecifically trained sport students and in untrained subjects concluded that BMD is probably dependent on the specific mechanical demands of different sports.
Comparison of Muscle Function, Bone Mineral Density and Body Composition of Early Starting and Later Starting Older Masters Athletes
Findings show that the Masters athletes that started intense endurance running after the age of 50 years had lower body fat and higher leg lean mass compared to non-athletes.
The Relationship between Cortisol and Bone Mineral Density in Competitive Male Cyclists
Findings indicate that cyclists should participate in weight training and increase calcium intake in order to increase or maintain BMD of the lumbar spine and hip.
Regional bone mineral density in male athletes: a comparison of soccer players, runners and controls
Running is associated with higher BMD at directly loaded sites (the calcaneus) but not at relatively unloaded sites ( the spine) and the importance of including an appropriate control group in clinical studies is underlined.


High Bone Mineral Density in Male Elite Professional Volleyball Players
Findings clearly demonstrate a considerably high BMC and BMD in professional volleyball players which seems to be related to the loading type of exercise they perform.
Effects of different sports on bone density and muscle mass in highly trained athletes.
It is shown that athletes, especially those engaged in high-impact sports, have significantly higher total BMD and AMM than controls, and the type of sport activity may be an important factor in achieving a high peak bone mass and reducing osteoporosis risk.
Bone Mineral Density of 704 Amateur Sportsmen Involved in Different Physical Activities
Head ratio was higher in non-weightbearing sports (rowing, swimming) than in weight bearing sports (rugby, team sports, soccer, fighting sports and bodybuilding), which seems to be site-specific and related to the supposedly high and unusual strains created at certain sites during sport training by muscle stress and gravitational forces.
Weight‐bearing activity during youth is a more important factor for peak bone mass than calcium intake
  • D. C. Welten, H. Kemper, G. Teule
  • Medicine
    Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research
  • 1994
Regular weight‐bearing exercise and at least a normal age‐related body weight in adolescence and young adulthood are of key importance in reaching the highest lumbar peak bone mass at the age of 27 years.
The assessment of historical physical activity and its relation to adult bone parameters.
A significant relation was found to exist between historical physical activity and dimensions of adult bone, particularly bone area, in a group of 223 postmenopausal women participating in a clinical trial in Pittsburgh, Pennsylvania, from 1981 to 1986 by evaluating the effect of moderate physical activity on bone loss.
Bone mineral loss and recovery after 17 weeks of bed rest
Bone regions measured were the lumbar spine, hip, tibia, forearm, calcaneus, total body, and segmental regions from the total‐body scan, and potential redistribution of bone mineral was observed: during bed rest the bone mineral increased in the skull of all subjects.
A school-based exercise intervention augments bone mineral accrual in early pubertal girls.
In girls, early puberty may be a particularly opportune time during growth for simple exercise interventions to have a positive effect on bone health, and 7-month change in bone parameters between prepubertal I and C groups was no difference.
Musculoskeletal adaptations to weightlessness and development of effective countermeasures.
It seems apparent that countermeasure exercises that have a greater resistance element, as compared to endurance activities, may prove beneficial to the musculoskeletal system.