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Old 08-17-2011, 10:15 PM   #1
fhhuo6059
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Default 举哑铃怎样渡过困难阶段

  许多人喜欢在家准备一副" target=_blank>哑铃,随时就拿出来练一练。最常见的动作是向上推哑铃,初学者很容易把哑铃放 得太低,有人甚至把哑铃下落到与肩同高的水平,像举重运动员挺举时杠铃杆放在锁骨上“歇脚儿”一样。其实, 这种动作幅度过大,以至大小臂紧夹、肘部贴近肋骨,光波炉原理,使肩关节处在不稳定的状态,此时肩部肌肉的负荷相对最大,如果哑铃很重,就会损伤肩部的韧带 。
  如果仔细观察举重运动员会发现,他们的握距较宽,两肘向外张开远离身体,靠腿部发力,同时降低身体重心 的方法来帮助肩部顺利渡过“困难阶段”,和举哑铃还是有所不同的。安全有效的哑铃推举动作,光波炉和微波炉的区别,其运动幅度是很小的,水宜生厂家
  正确举哑铃的动作应是———站立或坐姿均可,背部挺直,双手握哑铃,分开双臂使上臂与地面平行、小臂与 地面垂直,这就是初始位置,跟投降的动作很像;靠肩部发力将哑铃推向头顶上方,运动轨迹呈弧线,注意两只哑 铃不要碰撞在一起;在肘部完全伸直前停止上举、转做较慢的有控制的下放动作,返回到初始位置时 即停止下降,光波炉价格。一般做3~4组,每组10~15次。
  哑铃推举中的杠铃推举、机械推举,都能够较全面地锻炼肩部" target=_blank>肌肉群;用哑铃做侧平举、前平举、俯身侧平举,分别能比较独立地锻炼肩部肌肉 的前、中、后三个部分。举哑铃锻炼肩部不要过于频繁,给它较长的休息时间,反而能取得更好的效 果。
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