Healthy men received rolling manipulation on left gastrocnemius muscle in prone position. Average volume flow (VF) in popliteal artery was measured by Doppler before and after rolling manipulation.

法施术于健康男性左下肢腓肠肌处，法前后采用彩色超声多普勒诊断系统测量腘动脉平均血流量(VF)。

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Rather than breathing with a head turn – which is awkward and can cause muscle tension – think of rolling your body to the air…as if you were going to breathe with your belly button.

不要用转头的方法呼吸——这样感觉很奇怪，并且能引起肌肉僵硬——而是设想把整个体侧转出水面，如同要用肚脐眼呼吸一般。

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