Linear regressions for treatment numbers and SDPPP indices in various twitch forces. ETOIMS (Electrical Twitch-Obtaining Intramuscular Stimulation); SDPPP indices (summed Systolic–Diastolic–PulsePressure–Pulse differences pre and post -ETOIMS). Linear regressions for treatment numbers and SDPPP indices in various twitch forces. ETOIMS (Electrical Twitch-Obtaining Intramuscular Stimulation); SDPPP indices (summed Systolic–Diastolic–PulsePressure–Pulse differences pre and post -ETOIMS). Jennifer Chu et al. BMJ Innov 2017;3:176-187 Copyright © BMJ Publishing Group Ltd & British Cardiovascular Society. All rights reserved.