CYCLING PERFORMANCE TIPS
Osteoporosis - women
Effect of training mode and calcium intake on bone mineral density in female master cyclist, runners, and non-athletes.
The focus of this prospective, observational study was to determine the effect of
sport-specific training and calcium intake on bone mineral density (BMD) in female
master cyclists, runners and non-athletes. Thirty women (12 cyclists, 9 runners, 9 controls),
mean age of 49.6 +/- 7.9 years, were assessed at baseline and 18 months for calcium
intake (4-day records), current exercise activity (recall questionnaire), and BMD of
the lumbar spine and hip (DXA). A three (cyclists, runners, controls) by two (0 and 18
months) repeated measures ANOVA demonstrated a significant interaction effect of sport
and time at the femoral neck (p <.04). Tukey post hoc analysis indicated that the BMD of
the femur was maintained in cyclists and runners but declined in controls (p <.05). A
significant time effect was noted in BMD at the lumbar spine (p <. 001) and the
trochanter (p <.003). BMD of the lumbar spine was maintained in runners but declined in
cyclists (p <.007) and in controls (p <.03), while trochanteric BMD declined in all
groups (p <.01). No significant interaction effect of sport and dietary calcium intake
was noted for BMD at any site.
- Beshgetoor D, Nichols JF, Rego I.
- Department of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182-7251, USA.
- Int J Sport Nutr Exerc Metab. 2000 Sep;10(3):290-301.
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