首页> 外文期刊>The journal of sports medicine and physical fitness >Low bone mineral density and calcium intake in elite cyclists
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Low bone mineral density and calcium intake in elite cyclists

机译:精英自行车手的骨矿物质密度和钙摄入量低

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Aim. High physical activity is associated with larger bone mineral content (BMC) and density (BMD) in young males though competitive road cyclists have been reported to have similar or lower BMD than controls.rnMethods. BMC and BMD were assessed in 73 highly trained (42 professional and 31 elite amateur) road cyclists (CYCLIST; age: 25.8±4.3 years; height: 179.7±6.3 cm; weight: 71.6±6.3 kg; % Fat mass: 9.5±3 %; VO_(2max): 68.5±5.7 ml·kg~(-1)·min~(-1)) and in 30 healthy males used as reference (REF: 28.3±4.5 years; 176.6±6.2 cm; 74.5±8.4 kg; 21.3±6.1%).rnResults. Daily calcium intake estimated from a food-questionnaire was higher in CYCLIST than in REF (942±374 vs 753±315 mg·d~(-1;) P=0.008). Compared to REF, CYCLIST had lower L1-L4 BMD (1.004±0.125 vs 1.240±0.163 g·cm~(-2); P<0.0001) and femoral neck BMD (0.986±0.132 vs 1.098±0.137; P<0.003). In CYCLIST, daily calcium intake is correlated with total BMC and BMD (r=0.27-0.26, P=0.02) and femoral BMD (r=0.35; P=0.002). Divided by tertiles (high, medium and low Ca), CYCLIST with high Ca (1320±382 mg·d~(-1)) had lower lumbar BMD values (-6.68%; P=0.02) and tended to have lower femoral neck BMD (-4.77%; P=0.09) and radius UD BMD (-5.9%; P=0.07) than REF.rnConclusion. There was no difference between medium Ca and high Ca for any BMC or BMD parameters. Differences betweenrnlow Ca and high Ca could be detected only for Total BMC (-8.4%; P=0.01), Pelvis BMD (-7.4%; P=0.01) and femoral neck BMD (-9.9%; P=0.006).
机译:目标。高运动量与年轻男性的较大骨矿物质含量(BMC)和密度(BMD)相关,尽管据报道,竞争性公路自行车手的BMD与对照组相似或更低。 BMC和BMD在73名训练有素(42名专业和31名精英业余)的公路自行车运动员中进行了评估(CYCLIST;年龄:25.8±4.3岁;身高:179.7±6.3 cm;体重:71.6±6.3 kg;%脂肪质量:9.5±3 %; VO_(2max):68.5±5.7 ml·kg〜(-1)·min〜(-1)),以30例健康男性为参考(REF:28.3±4.5岁; 176.6±6.2 cm; 74.5±8.4千克; 21.3±6.1%)。 CYCLIST的食物问卷调查得出的每日钙摄入量高于REF(942±374对753±315 mg·d〜(-1;)P = 0.008)。与REF相比,CYCLIST的L1-L4 BMD较低(1.004±0.125 vs 1.240±0.163 g·cm〜(-2); P <0.0001)和股骨颈BMD(0.986±0.132 vs 1.098±0.137; P <0.003)。在CYCLIST中,每日钙摄入量与总BMC和BMD(r = 0.27-0.26,P = 0.02)和股骨BMD(r = 0.35; P = 0.002)相关。高钙(1320±382 mg·d〜(-1))CYCLIST分为三分位数(高,中,低Ca),其腰椎BMD值较低(-6.68%; P = 0.02),并且股骨颈较低BMD(-4.77%; P = 0.09)和半径UD BMD(-5.9%; P = 0.07)比REF.rn结论。对于任何BMC或BMD参数,中Ca与高Ca之间没有差异。只有总BMC(-8.4%; P = 0.01),骨盆BMD(-7.4%; P = 0.01)和股骨颈BMD(-9.9%; P = 0.006)才能检测到低钙和高钙之间的差异。

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