James Pivarnik, Ph. D., FACSM, says that hundreds of studies have shown physical activity to be not only safe, but beneficial, for expectant mothers.
美国运动医学会会员James Pivarnik博士说，有数以百计的研究表明，孕妇体力活动不仅安全，而且有利。
James Pivarnik, Ph. D., FACSM, says that hundreds of studies have shown physical activity to be not only safe, but beneficial, for expectant mothers.
美国运动医学会会员James Pivarnik博士说，有数以百计的研究表明，孕妇体力活动不仅安全，而且有利。
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