text: adjustment to different heights. A bar height producing a 
  knee joint angle of 145(cid:7) (measured by a manual goniometer) 
  was selected, and the participant was instructed to keep his 
  torso upright while completing the IMTP efforts. Two cali- 
  brated 10-kN-capacity force platforms (model 9286B, Kistler 
  Instruments, Ltd., London, UK), one underneath each foot, 
  were placed on top of the isometric rig’s base plate, and verti- 
  cal force signals from the eight individual load cells across the 
  two force platforms were outputted (External Control Unit 
  model 5233 A, Kistler Instruments, Ltd.) and sampled at 2,000 
  Hz using an external analog-to-digital converter (Micro 1401; 
  
  CED, Cambridge, UK) and recorded with Spike 2 computer 
  software (CED, Cambridge, UK). 
  
  Following a warm-up consisting of a series of incremental 
  warm-up contractions of (cid:6)5 s duration ranging from 50% to 
  90% of maximum perceived effort, two maximum IMTP 
  efforts of 3–5 s duration were performed under the instruc- 
  tion to “pull as hard as possible.” Six minutes separated the 
  maximum efforts, based on a self-selected recovery period. 
  Wrist wraps were worn to remove the inﬂuence of grip 
  strength from the assessment. Real-time overall feedback 
  from the force platforms (the sum of the force signals from 