A Study of Electromyographic Changes in Muscle Post Exercise Induced Muscle Soreness Rajput Manish1, Samuel Ankita1, Gupta Chhavi1, Kalra Sumit2 1Student BPT, Banarsidas Chadiwala Institute of Physiotherapy 2Assistant Professor, Banarsidas Chadiwala Institute of Physiotherapy Online published on 13 February, 2013. Abstract Aim and Objective To analyze electromyographic changes in muscle post Exercise Induced Muscle Soreness (EIMS). Methodology 80 subjects(age group 21-30yrs, BMI 18-29kg/m2) free of any musculoskeletal/Neuromuscular/psychological disorder, took part in the study. After checking for leg dominancy and calculation of BMI, the subjects were asked to perform one single squat up to 900 of hip and knee flexion while an EMG of the Rectus Femoris and Vastus Medialis Obliqus (both parts of quadriceps muscle) was recorded simultaneously. Another EMG reading was taken in the similar manner after confirming the development of muscle soreness on a graphic pain rating scale following the exercise protocol. Results The mean value of peak EMG of Rectus Femoris pre exercise is 508.69mV (microvolt) and post exercise induced muscle soreness is 686.60 mV. The mean of peak EMG amplitude of Vastus Medialis Obliqus came out to be as 379.81 mV pre exercise and 472.70 mV post exercise induced muscle soreness. The p value for RF pre and post was 0.000 and for VMO pre and post was 0.034. Conclusion The conclusion drawn from the study is that there is a significant increase in peak EMG amplitude of the muscles (RF and VMO) post exercise induced muscle soreness. Top Keywords Exercise Induced Muscle Soreness (EIMS), RF, VMO, EMG. Top |