Effect of high-impact aerobics and strength training on BMD in young women aged 20-35 years.
Effect of high-impact aerobics and strength training on BMD in young women aged 20-35 years.
复制标题
高强度有氧运动和力量训练对 20-35 岁年轻女性 BMD 的影响。
DOI：
10.1055/s-0030-1268503
复制
发表时间：
2011
影响因子：
2.5
通讯作者：
Arnaud,SB
中科院分区：
文献类型：
--
作者：
Liang,MTC;Braun,W;Bassin,SL;Dutto,D;Pontello,A;Wong,ND;Spalding,TW;Arnaud,SB
为了评估12个月的运动干预的影响，无论是高冲击的有氧运动或中等强度的力量训练面积骨密度（aBMD），我们研究了51名未经训练的妇女，年龄在20-35岁，这项研究。采用双能X线骨密度仪（DXA、Hologic或PIXI Lunar）测量全身及足跟和腕部aBMD。受试者被随机分配到：冲击负荷的有氧运动（SA，n= 15），中等强度的下半身力量训练（ST，n= 16）或非运动控制（CON，n= 20）。数据分析仅包括那些完成95%的每项常规训练并参加至少80%的所有课程的人。采用方差分析法分析aBMD、腿部按压强度和尿交联脱氧吡啶啉（μDPD）的组间差异。在12个月的干预后，相对于基线，SA引起足跟aBMD（4.4%，p< 0.05）和腿部按压强度（15%，p< 0.05）增加。同时，ST显示腿部按压强度增加（48%，p< 0.05），而任何测量部位的aBMD均无显著增加。在基线、6个月和12个月时，在所有3组中观察到相似且无变化的μDPD。总之，一个12个月的高冲击的有氧运动导致了一个显着的增加，脚跟aBMD在未经训练的年轻女性，谁遵守运动方案。持续时间相似的中等强度力量训练干预对aBMD没有影响，尽管腿部力量显着增加。
To evaluate the effects of a 12-month exercise intervention using either high-impact step aerobic exercise or moderate-intensity strength training on areal bone mineral density (aBMD) we studied 51 untrained women, aged 20–35 years, for this study. Whole body and heel and wrist aBMD were measured by dual-energy X-ray absorptiometry (DXA, Hologic or PIXI Lunar). Subjects were randomly assigned to: impact-loaded step aerobic exercise (SA, n= 15), moderate-intensity lower body strength training (ST, n= 16) or non-exercise control (CON, n= 20). Data analysis only included those who completed 95% of each training routine and attended at least 80% of all sessions. Group differences in aBMD, leg press strength and urinary cross-link deoxypridinoline (μDPD) were analysed using analysis of variance. After a 12-month intervention, the SA elicited an increase in aBMD of the heel (4.4%, p< 0.05) and leg press strength (15%, p< 0.05), relative to baseline. Meanwhile, the ST showed an increase in leg press strength (48%, p< 0.05) with no significant increase in aBMD at any measured site. Similar and unchanged μDPD was observed in all 3 groups at baseline, 6 and 12 months. In conclusion, a 12-month high-impact step aerobic exercise resulted in a significant increase in the heel aBMD in untrained young women, who complied with the exercise regimen. A moderate intensity strength training intervention of similar duration had no effect on aBMD although leg strength increased significantly.