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RSM International, branded RSM since 2015, is a multinational network of accounting firms based in London, United Kingdom. [2] RSM is the sixth-largest accountancy professional services network in the world by revenue. [3] [4] RSM's member firms are independent accounting and advisory businesses, each of which practices in its own right and is unified as part of the network.

RSMI =AppenLean Mass / Height2 （kg/m2） 以下情况可判断为Sarcopenia（肌质减少症或者肌肉衰减综合征）： A.RSMI低于正常青年人2个SD值，即：T ﹤ -2.0； B.男性RSMI小于7.26 kg/m2（适合所有种族）； C.女性RSMI小于5.45 kg/m2（除黑人以外所有种族均适用）；

2020年10月2日 · RsmI is an S-AdoMet (S-adenosyl-L-methionine or SAM)-dependent methyltransferase responsible for the 2'-O-methylation of cytidine 1402 (C1402) at the P site of bacterial 16S rRNA. Another S-AdoMet-dependent methyltransferase, RsmH (not included in this family), is responsible for N4-methylation at C1402.

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2022年3月11日 · （1）相对骨骼肌质量指数（relative skeletal muscle index，RSMI），即四肢骨骼肌的质量与身高平方的比值。 当RSMI低于青年对照组2个标准差以上或男性RSMI＜7.26 kg/m2、女性RSMI＜5.45 kg/m2时，即可判定为肌肉衰减症。

主要参考以下指标：（1）相对骨骼肌质量指数（relative skeletal muscle index，RSMI），即四肢骨骼肌的质量与身高平方的比值。 当RSMI低于青年对照组2个标准差以上或男性RSMI<7.26 kg/m 2 、女性RSMI<5.45 kg/m 2 时，即可判定为肌肉衰减症。

通过dxa人体成分分析，如何计算相对骨骼肌指数

瘦的是肉、是骨骼肌——瘦多囊虽然体质量、体脂率、骨骼肌率都正常，但就是骨骼肌质量指数（rsmi）过低、内脏脂肪指数（vfi）偏高。 这一高一低，同样会导致胰岛素抵抗 ，导致糖代谢及生殖内分泌紊乱。

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