Muscular strength and bone density with weight training in middle-aged women.
Muscular strength and bone density with weight training in middle-aged women.
复制标题
中年女性重量训练的肌肉力量和骨密度。
DOI：
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发表时间：
1991
影响因子：
4.1
通讯作者：
E. Smith
中科院分区：
文献类型：
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作者：
S. Peterson;Matthew D. Peterson;Gera Raymond;C. Gilligan;M. Checovich;E. Smith
先前的研究已经证明了骨量与体力活动和肌肉力量之间的正相关性。描述对人体骨骼最有益的特定运动类型的信息很少。通过测量肌肉力量和骨密度（BMD），研究了18名参加耐力舞蹈项目的中年妇女（E + W）与17名仅参加耐力舞蹈项目的中年妇女（E）和19名久坐对照妇女（C）进行1年负重训练的效果。E + W组的18名女性在所有力量测量中表现出增加，而E和C组的增加幅度较小或有所下降。一个显着的组x测试相互作用项，表明随着时间的推移，各组的反应不同，观察到非优势等速肘关节屈曲，通过在60度的恒定速度的运动范围。（P <0.05），180 ° s-1时非优势等速伸肘（P <0.01），非优势等速肘关节屈曲180 °·s-1（P <0.05）。除了桡骨超远端部位出现显著的组x检验交互作用项（P <0.01）外，BMD无显著变化。E组和E + W组的肱骨和股骨Ward三角的BMD在一年中无显著性增加。这种重量训练计划增加了肌肉力量，但没有增加测量的骨量。
Previous research has demonstrated positive correlations between bone mass and both physical activity and muscular strength. There is a paucity of information describing the specific type of exercise which most benefits the human skeleton. The effects of a 1 yr weight training program on 18 middle-aged women participating in an endurance dance program (E + W) compared with 17 other women in the endurance dance program only (E) and with 19 sedentary controls (C) were studied by measuring muscular strength and bone mineral density (BMD). Eighteen women in the E + W group demonstrated increases in all strength measurements, whereas the E and C groups either had smaller increases or had declined. A significant group x test interaction term, indicating that groups responded differently over time, was observed for nondominant isokinetic elbow flexion measured through the range of motion at a constant velocity of 60 degrees.s-1 (P less than 0.05), nondominant isokinetic elbow extension at 180 degrees.s-1 (P less than 0.01), and nondominant isokinetic elbow flexion at 180 degrees.s-1 (P less than 0.05). BMD did not change significantly except that a significant group x test interaction term appeared for the radius ultradistal site (P less than 0.01). BMD of the humerus and femoral Ward's triangle increased nonsignificantly in both E and E + W over the year. This weight training program increased muscular strength but did not increase measured bone mass.