a DM, * compared with LDDSE semi-quantitative, P <0.05, #compared with LDDSE semi-quantitative, P >0.05, ΔP <0.05 compared to resting time; bnon-DM, * compared with LDDSE semi-quantitative,P <0.05, Δ P <0.05 compared to resting time
$DM compared with non-DM, P <0.05