Determination of Optimal Grip Force with Minimal Discomfort for Various Combined Movements of Wrist Singh Amandeep Gian Sagar College of Physiotherapy, Rajpura, Patiala Online published on 12 January, 2018. Abstract Background The present study was aimed to find out the amount of force that can be maximally applied without much discomfort at various joint angles to decrease the incidence of WMSDs. Materials & Method The study design was experimental. Subjects in the age range of 19–30 years were made part of study and were randomized into 4 groups according to range of extension at which the experiment was performed. Maximum grip strength using Jamar's dynamometer, with the subjects arm fixed on a wooden board designed and prepared for the study. Subject was asked to exert 10% of the maximum force for 4 seconds followed by rest of 1 second and this was continued for 5 minutes. If the subject reported mild to moderate VAS on completion, the experiment was again repeated with 10% increase in force after a rest period of 5 minutes until the VAS became severe. Results The post experiment readings of ANOVA showed significant difference of VAS in group A and D. Conclusion The minimum discomfort for wrist at 55% range of extension was at 38% of ulnar deviation, for 38% of range of extension at 18% of ulnar deviation and for 0 and 18% of extension at 18% and 38% of ulnar deviation. Top Keywords Prevalence, Jamar's dynamometer, WMSDs. Top |