A comparison of manual and automatic force-onset identification methodologies and their effect on force-time characteristics in the isometric midthigh pull

The aim of this study was to assess the agreement three different automated methods identifying force-onset (40 N, 5 SDs, and 3 SDs) with manual identification, during isometric mid-thigh pull (IMTP). Fourteen resistance-trained participants >6 months experience training power clean volunteered take part. After familiarisation sessions, performed five maximal IMTPs separated by 1 min rest. Fixed bias found between 40 N identification for time at force-onset. No proportional present any threshold. force onset F150. Proportional but not fixed F50 all thresholds. Small moderate differences (Hedges g = −0.487- −0.692) were F90 thresholds while trivial small −0.122—−0.279) F200 F250. Based on these results, strength conditioning practitioners should use a or SDs threshold interchangeably when analysing IMTP force–time curve data.