Lousuebsakul-Matthews Vichuda, Thorpe Donna, Knutsen Raymond, Beeson W Larry, Fraser Gary E, Knutsen Synnove F
Center for Nutrition, Healthy Lifestyle and Disease Prevention, School of Public Health, Loma Linda University, Loma Linda, CA, USA.
Los Angeles County, Department of Health Services, Los Angeles County, Los Angeles, CA, USA.
J Sci Res Rep. 2015;7(3):165-177. doi: 10.9734/JSRR/2015/17962. Epub 2015 Apr 30.
Physical activity is well recognized for its bone health benefit. We examined the benefit of walk/run/jog on bone health using broadband ultrasound attenuation (BUA) of the calcaneus.
Caucasian and African American males (n=593) and females (n=1,106) had their calcaneal BUA measured two years later after enrollment into the AHS-2. The association between calcaneal BUA (dB/Mhz) and the distance of walk/run/ jog level per week (miles) was assessed using multiple linear regression.
In a multivariable model adjusted for important covariates, BUA was positively associated with BMI ( < .001), total calcium intake ( =0.31), total protein intake ( =0.38) and inversely associated with age ( < .001) and smoking ( < .05). Compared to women who did not walk/ run/ jog, women walking 10 or more miles per week had an increase in BUA by 4.08 (dB/Mhz) ( =0.03). Similarly, compared to men who did not walk/ run/ jog, men walking 10 or more miles per week had an increase in BUA by 5.97 (dB/Mhz) ( =0.01).
We concluded that BUA is positively associated with walk/ run/jog after accounting for age, BMI, smoking status, calcium intake, protein intake and estrogen usage.
体育活动对骨骼健康的益处已得到广泛认可。我们使用跟骨的宽带超声衰减（BUA）来研究步行/跑步/慢跑对骨骼健康的益处。
白种人和非裔美国男性（n = 593）以及女性（n = 1106）在参加AHS - 2两年后测量其跟骨BUA。使用多元线性回归评估跟骨BUA（dB/Mhz）与每周步行/跑步/慢跑水平的距离（英里）之间的关联。
在针对重要协变量进行调整的多变量模型中，BUA与BMI呈正相关（<0.001），与总钙摄入量呈正相关（= 0.31），与总蛋白质摄入量呈正相关（= 0.38），与年龄呈负相关（<0.001），与吸烟呈负相关（<0.05）。与不步行/跑步/慢跑的女性相比，每周步行10英里或更多的女性的BUA增加了4.08（dB/Mhz）（= 0.03）。同样，与不步行/跑步/慢跑的男性相比，每周步行10英里或更多的男性的BUA增加了5.97（dB/Mhz）（= 0.01）。
我们得出结论，在考虑年龄、BMI、吸烟状况、钙摄入量、蛋白质摄入量和雌激素使用情况后，BUA与步行/跑步/慢跑呈正相关。
