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- W1998103675 abstract "1081 PURPOSE: The purpose of this study was to examine the effects of cycling training on the total body, lumbar spine, and proximal femur bone mineral density (BMD) of men aged 20–45 years (n = 27). A sample (n = 10) of age-matched and body weight-matched recreationally active men served as the comparison group. METHODS: The athletes were competitive racing cyclists (USCF categories 1–5) with an average of 8.9 years of racing experience who trained 7–20 hours per week. Subjects completed calcium intake, health status, and training history questionnaires. BMD was measured using Dual Energy X-Ray Absorptiometry (GE Lunar, Prodigy, v. 6.70.021) at the AP lumbar spine (L2-L4), the dual femur (femoral neck, Ward's Area, trochanter, total hip) and the total body sites. Body composition variables were obtained from the total body scan. RESULTS: There were no significant (p>.05) differences between the cyclists (CYC) and controls (CON) for age, height, or body weight, however, the % body fat for the CYC group was significantly lower (p<.05) than the CON group. The calcium intake of the CON group was significantly lower (p<.05) than the CYC group (910 ± 113 vs1536 ± 144). There were no significant (p>.05) group differences for the total body and hip sites. The spine BMD was significantly (p<.01) lower for the CYC than CON. Based on the ISCD guidelines (2002) for osteoporosis diagnosis in men, 11% of the CYC had lumbar spine T-scores in the osteoporotic range(≥-2.5), whereas 19% and 20% of CYC and CON, respectively had osteopenia (T-score −1.1 to −2.4) at the spine. In addition, 22% of CYC fell into the osteopenia category for the total hip compared to 10% for the CON group. CONCLUSIONS: In conclusion, these findings suggest that competitive road cycling does not load the spine. However, mechanical loading may occur at the hip as a result of the high levels of muscular contraction by the leg and hip musculature during this type of training.Table" @default.
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- W1998103675 date "2004-05-01" @default.
- W1998103675 modified "2023-09-25" @default.
- W1998103675 title "Comparison of Bone Density in Competitive Male Cyclists and Recreationally Active Men" @default.
- W1998103675 doi "https://doi.org/10.1097/00005768-200405001-00738" @default.
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