No. MUP duration(ms)▲ Light contraction amplitude (uV)▼ Percentage of polyphasic MUP (%)▲ Strong contraction amplitude (uV)▼ MSA 31 12.79±3.21 249.00(210.00-340.00) 23.02±19.29 0.6 0(0.50-1.15) Non-MSA 52 10.01±1.41 304.5(230.25-418.00) 17.19±9.09 0.65 (0.50-1.00) statistics   4.573 664.5 1.215 787.000 P value   <0.001 0.183 0.232 0.517 Data was standard normal distribution. T test was used for analysis.▼Data was not standard normal distribution. Mann-Whitney U test was used for analysis.

Table 2: US-EMG results between MSA and non-MSA groups.